576 lines
21 KiB
Python
576 lines
21 KiB
Python
from typing import Optional, Union, Sequence, Dict, Any, Collection
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import numpy as np
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import h5py
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from ._typehints import FileHandle, FloatSequence, StrSequence
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from . import Config
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from . import Rotation
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from . import Orientation
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from . import util
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from . import Table
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class ConfigMaterial(Config):
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"""
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Material configuration.
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Manipulate material configurations for storage in YAML format.
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A complete material configuration file has the entries 'material',
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'phase', and 'homogenization'. For use in DAMASK, it needs to be
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stored as 'material.yaml'.
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"""
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def __init__(self,
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config: Optional[Dict[str, Any]] = None,
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**kwargs):
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"""
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New material configuration.
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Parameters
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----------
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config : dict or str, optional
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Material configuration. String needs to be valid YAML.
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Defaults to None, in which case empty entries for
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any missing material, homogenization, and phase entry are created.
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kwargs : key=value pairs, optional
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Initial content specified as pairs of key=value.
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"""
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default: Collection
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if config is None:
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for section, default in {'material':[],'homogenization':{},'phase':{}}.items():
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if section not in kwargs: kwargs.update({section:default})
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super().__init__(config,**kwargs)
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def save(self,
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fname: FileHandle = 'material.yaml',
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**kwargs):
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"""
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Save to YAML file.
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Parameters
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----------
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fname : file, str, or pathlib.Path, optional
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Filename or file for writing. Defaults to 'material.yaml'.
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**kwargs
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Keyword arguments parsed to yaml.dump.
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"""
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super().save(fname,**kwargs)
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@classmethod
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def load(cls,
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fname: FileHandle = 'material.yaml') -> 'ConfigMaterial':
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"""
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Load from YAML file.
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Parameters
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----------
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fname : file, str, or pathlib.Path, optional
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Filename or file to read from. Defaults to 'material.yaml'.
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Returns
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-------
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loaded : damask.ConfigMaterial
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Material configuration from file.
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"""
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return super(ConfigMaterial,cls).load(fname)
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@staticmethod
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def load_DREAM3D(fname: str,
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grain_data: Optional[str] = None,
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cell_data: Optional[str] = None,
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cell_ensemble_data: str = 'CellEnsembleData',
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phases: str = 'Phases',
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Euler_angles: str = 'EulerAngles',
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phase_names: str = 'PhaseName',
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base_group: Optional[str] = None) -> 'ConfigMaterial':
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"""
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Load DREAM.3D (HDF5) file.
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Data in DREAM.3D files can be stored per cell ('CellData')
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and/or per grain ('Grain Data'). Per default, cell-wise data
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is assumed.
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damask.Grid.load_DREAM3D allows to get the corresponding geometry
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for the grid solver.
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Parameters
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----------
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fname : str
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Filename of the DREAM.3D (HDF5) file.
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grain_data : str
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Name of the group (folder) containing grain-wise data. Defaults
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to None, in which case cell-wise data is used.
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cell_data : str
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Name of the group (folder) containing cell-wise data. Defaults to
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None in wich case it is automatically detected.
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cell_ensemble_data : str
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Name of the group (folder) containing data of cell ensembles. This
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group is used to inquire the name of the phases. Phases will get
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numeric IDs if this group is not found. Defaults to 'CellEnsembleData'.
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phases : str
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Name of the dataset containing the phase ID (cell-wise or grain-wise).
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Defaults to 'Phases'.
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Euler_angles : str
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Name of the dataset containing the crystallographic orientation as
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Euler angles in radians (cell-wise or grain-wise). Defaults to 'EulerAngles'.
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phase_names : str
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Name of the dataset containing the phase names. Phases will get
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numeric IDs if this dataset is not found. Defaults to 'PhaseName'.
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base_group : str
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Path to the group (folder) that contains geometry (_SIMPL_GEOMETRY),
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and grain- or cell-wise data. Defaults to None, in which case
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it is set as the path that contains _SIMPL_GEOMETRY/SPACING.
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Notes
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-----
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Homogenization and phase entries are emtpy and need to be defined separately.
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Returns
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-------
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loaded : damask.ConfigMaterial
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Material configuration from file.
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"""
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b = util.DREAM3D_base_group(fname) if base_group is None else base_group
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c = util.DREAM3D_cell_data_group(fname) if cell_data is None else cell_data
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f = h5py.File(fname,'r')
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if grain_data is None:
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phase = f['/'.join([b,c,phases])][()].flatten()
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O = Rotation.from_Euler_angles(f['/'.join([b,c,Euler_angles])]).as_quaternion().reshape(-1,4) # noqa
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_,idx = np.unique(np.hstack([O,phase.reshape(-1,1)]),return_index=True,axis=0)
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idx = np.sort(idx)
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else:
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phase = f['/'.join([b,grain_data,phases])][()]
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O = Rotation.from_Euler_angles(f['/'.join([b,grain_data,Euler_angles])]).as_quaternion() # noqa
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idx = np.arange(phase.size)
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if cell_ensemble_data is not None and phase_names is not None:
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try:
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names = np.array([s.decode() for s in f['/'.join([b,cell_ensemble_data,phase_names])]])
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phase = names[phase]
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except KeyError:
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pass
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base_config = ConfigMaterial({'phase':{k if isinstance(k,int) else str(k): None for k in np.unique(phase)},
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'homogenization':{'direct':{'N_constituents':1}}})
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constituent = {k:np.atleast_1d(v[idx].squeeze()) for k,v in zip(['O','phase'],[O,phase])}
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return base_config.material_add(**constituent,homogenization='direct')
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@staticmethod
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def from_table(table: Table,
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**kwargs) -> 'ConfigMaterial':
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"""
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Generate from an ASCII table.
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Parameters
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----------
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table : damask.Table
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Table that contains material information.
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**kwargs
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Keyword arguments where the key is the property name and
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the value specifies either the label of the data column in the table
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or a constant value.
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Returns
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-------
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new : damask.ConfigMaterial
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Material configuration from values in table.
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Examples
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--------
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>>> import damask
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>>> import damask.ConfigMaterial as cm
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>>> t = damask.Table.load('small.txt')
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>>> t
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3:pos pos pos 4:qu qu qu qu phase homog
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0 0 0 0 0.19 0.8 0.24 -0.51 Aluminum SX
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1 1 0 0 0.8 0.19 0.24 -0.51 Steel SX
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2 1 1 0 0.8 0.19 0.24 -0.51 Steel SX
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>>> cm.from_table(t,O='qu',phase='phase',homogenization='homog')
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material:
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- constituents:
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- O: [0.19, 0.8, 0.24, -0.51]
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v: 1.0
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phase: Aluminum
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homogenization: SX
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- constituents:
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- O: [0.8, 0.19, 0.24, -0.51]
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v: 1.0
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phase: Steel
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homogenization: SX
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homogenization: {SX: null}
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phase: {Aluminum: null, Steel: null}
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>>> cm.from_table(t,O='qu',phase='phase',homogenization='single_crystal')
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material:
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- constituents:
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- O: [0.19, 0.8, 0.24, -0.51]
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v: 1.0
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phase: Aluminum
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homogenization: single_crystal
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- constituents:
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- O: [0.8, 0.19, 0.24, -0.51]
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v: 1.0
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phase: Steel
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homogenization: single_crystal
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homogenization: {single_crystal: null}
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phase: {Aluminum: null, Steel: null}
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"""
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kwargs_ = {k:table.get(v) if v in table.labels else np.atleast_2d([v]*len(table)).T for k,v in kwargs.items()}
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_,idx = np.unique(np.hstack(list(kwargs_.values())),return_index=True,axis=0)
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idx = np.sort(idx)
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kwargs_ = {k:np.atleast_1d(v[idx].squeeze()) for k,v in kwargs_.items()}
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for what in ['phase','homogenization']:
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if what not in kwargs_: kwargs_[what] = what+'_label'
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return ConfigMaterial().material_add(**kwargs_)
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@property
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def is_complete(self) -> bool:
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"""
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Check for completeness.
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Only the general file layout is considered.
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This check does not consider whether specific parameters for
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a particular phase/homogenization model are missing.
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Returns
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-------
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complete : bool
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Whether the material.yaml definition is complete.
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"""
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def LabeledList(label,items):
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return f'{label.capitalize()}{"s" if len(items)>1 else ""} {util.srepr(items,",",quote=True)}'
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ok = True
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msg = []
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all = set(['homogenization','phase','material'])
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miss = set([item for item in all if item not in self])
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empty = set([item for item in all-miss if self[item] is None])
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if miss:
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msg.append(f'{LabeledList("top-level",miss)} missing')
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ok = False
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if empty:
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msg.append(f'{LabeledList("top-level",empty)} empty')
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if ok:
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ok &= len(self['material']) > 0
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if len(self['material']) < 1: msg.append('No materials defined')
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homogenization = set()
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phase = set()
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for i,v in enumerate(self['material']):
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if 'homogenization' in v:
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homogenization.add(v['homogenization'])
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else:
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msg.append(f'No homogenization specified for material {i}')
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ok = False
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if 'constituents' in v:
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for ii,vv in enumerate(v['constituents']):
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if 'O' not in vv:
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msg.append(f'No orientation specified for constituent {ii} of material {i}')
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ok = False
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if 'phase' in vv:
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phase.add(vv['phase'])
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else:
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msg.append(f'No phase specified for constituent {ii} of material {i}')
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ok = False
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for v,other in {'phase':phase,
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'homogenization':homogenization}.items():
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me = set([] if v in empty else self[v])
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if _miss := other - me:
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msg.append(f'{LabeledList(v,_miss)} missing')
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ok = False
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if len(_empty := [item for item in me if self[v][item] is None]) > 0:
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msg.append(f'{LabeledList(v,_empty)} undefined')
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ok = False
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print(util.srepr(msg))
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return ok
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@property
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def is_valid(self) -> bool:
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"""
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Check for valid content.
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Only the generic file content is considered.
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This check does not consider whether parameters for a
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particular phase/homogenization mode are out of bounds.
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Returns
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-------
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valid : bool
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Whether the material.yaml definition is valid.
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"""
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ok = True
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if 'phase' in self:
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for k,v in self['phase'].items():
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if v is not None and 'lattice' in v:
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try:
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Orientation(lattice=v['lattice'])
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except KeyError:
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print(f"Invalid lattice '{v['lattice']}' in phase '{k}'")
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ok = False
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if 'material' in self:
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for i,m in enumerate(self['material']):
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if 'constituents' in m:
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v = 0.0
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for c in m['constituents']:
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v += float(c['v'])
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if 'O' in c:
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try:
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Rotation.from_quaternion(c['O'])
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except ValueError:
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print(f"Invalid orientation '{c['O']}' in material '{i}'")
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ok = False
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if not np.isclose(v,1.0):
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print(f"Total fraction v = {v} ≠ 1 in material '{i}'")
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ok = False
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return ok
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def material_rename_phase(self,
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mapping: Dict[str, str],
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ID: Optional[Sequence[int]] = None,
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constituent: Optional[Sequence[int]] = None) -> 'ConfigMaterial':
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"""
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Change phase name in material.
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Parameters
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----------
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mapping: dict
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Mapping from old name to new name
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ID: list of ints, optional
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Limit renaming to selected material IDs.
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constituent: list of ints, optional
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Limit renaming to selected constituents.
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Returns
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-------
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updated : damask.ConfigMaterial
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Updated material configuration.
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"""
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dup = self.copy()
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for i,m in enumerate(dup['material']):
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if ID is not None and i not in ID: continue
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for c in m['constituents']:
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if constituent is not None and c not in constituent: continue
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try:
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c['phase'] = mapping[c['phase']]
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except KeyError:
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continue
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return dup
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def material_rename_homogenization(self,
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mapping: Dict[str, str],
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ID: Optional[Sequence[int]] = None) -> 'ConfigMaterial':
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"""
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Change homogenization name in material.
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Parameters
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----------
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mapping: dict
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Mapping from old name to new name
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ID: list of ints, optional
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Limit renaming to selected homogenization IDs.
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Returns
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-------
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updated : damask.ConfigMaterial
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Updated material configuration.
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"""
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dup = self.copy()
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for i,m in enumerate(dup['material']):
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if ID is not None and i not in ID: continue
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try:
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m['homogenization'] = mapping[m['homogenization']]
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except KeyError:
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continue
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return dup
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def material_add(self,*,
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homogenization: Optional[Union[str,StrSequence]] = None,
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phase: Optional[Union[str,StrSequence]] = None,
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v: Optional[Union[float,FloatSequence]] = None,
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O: Optional[Union[float,FloatSequence]] = None,
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V_e: Optional[Union[float,FloatSequence]] = None) -> 'ConfigMaterial':
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"""
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Add material entries.
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Parameters
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----------
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homogenization: (array-like) of str, optional
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Homogenization label.
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phase: (array-like) of str, optional
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Phase label (per constituent).
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v: (array-like) of float, optional
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Constituent volume fraction (per constituent).
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Defaults to 1/N_constituents
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O: (array-like) of damask.Rotation or np.array/list of shape(4), optional
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Orientation as unit quaternion (per constituent).
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V_e: (array-like) of np.array/list of shape(3,3), optional
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Left elastic stretch (per constituent).
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Returns
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-------
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updated : damask.ConfigMaterial
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Updated material configuration.
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Notes
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-----
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First index of array-like values that are defined per constituent
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runs over materials, whereas second index runs over constituents.
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Examples
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--------
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Create two grains of ferrite and one grain of martensite, each with random orientation:
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>>> import damask
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>>> m = damask.ConfigMaterial()
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>>> m = m.material_add(phase = ['Ferrite','Martensite','Ferrite'],
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... O = damask.Rotation.from_random(3),
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... homogenization = 'SX')
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>>> m
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material:
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- constituents:
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- O: [0.577764, -0.146299, -0.617669, 0.513010]
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v: 1.0
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phase: Ferrite
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homogenization: SX
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- constituents:
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- O: [0.184176, 0.340305, 0.737247, 0.553840]
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v: 1.0
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phase: Martensite
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homogenization: SX
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- constituents:
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- O: [0.47925185, -0.04294454, 0.78760173, -0.3849116 ]
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v: 1.0
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phase: Ferrite
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homogenization: SX
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homogenization: {SX: null}
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phase: {Ferrite: null, Martensite: null}
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Create hundred materials that each approximate a duplex stainless steel microstructure
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with three austenite and one relatively bigger ferrite grain of random orientation each:
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>>> import damask
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>>> m = damask.ConfigMaterial()
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>>> m = m.material_add(phase = np.array(['Austenite']*3+['Ferrite']),
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... O = damask.Rotation.from_random((100,4)),
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... v = np.array([0.2]*3+[0.4]),
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... homogenization = 'Taylor')
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>>> m
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material:
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- constituents:
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- v: 0.2
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phase: Austenite
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O: [0.46183665006602664, 0.2215160420973196, -0.5594313187331139, 0.6516702781083836]
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- v: 0.2
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phase: Austenite
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O: [0.11321658382410027, 0.6354079414360444, 0.00562701344273936, 0.7638108992590535]
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- v: 0.2
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phase: Austenite
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O: [0.050991978809077604, 0.8069522034362003, -0.11352928955610851, -0.5773552285027659]
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- v: 0.4
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phase: Ferrite
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O: [0.9460076150721788, 0.15880754622367604, -0.0069841062241482385, -0.28249066842661014]
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homogenization: Taylor
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.
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.
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.
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- constituents:
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- v: 0.2
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phase: Austenite
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O: [0.12531400788494199, -0.18637769037997565, 0.31737548053338394, -0.9213210951197429]
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- v: 0.2
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phase: Austenite
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O: [0.37453930577161404, -0.33529507696450805, -0.3266564259130028, -0.800370601162502]
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- v: 0.2
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phase: Austenite
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O: [0.035776891752713764, -0.720706371010592, -0.4540438656728926, -0.5226342017569017]
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- v: 0.4
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phase: Ferrite
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O: [0.6782596727966124, -0.20800082041703685, -0.138636083554039, 0.6909989227925536]
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homogenization: Taylor
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homogenization: {Taylor: null}
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phase: {Austenite: null, Ferrite: null}
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"""
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kwargs = {}
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for keyword,value in zip(['homogenization','phase','v','O','V_e'],[homogenization,phase,v,O,V_e]):
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if value is not None: kwargs[keyword] = value
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_constituent_properties = ['phase','O','v','V_e']
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_dim = {'O':(4,),'V_e':(3,3,)}
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_ex = dict((k, -len(v)) for k, v in _dim.items())
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N_materials,N_constituents = 1,1
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shaped : Dict[str, Union[None,np.ndarray]] = \
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{'v': None,
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'phase': None,
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'homogenization': None,
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}
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for arg,value in kwargs.items():
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shaped[arg] = np.array(value)
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s = shaped[arg].shape[:_ex.get(arg,None)] # type: ignore
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N_materials = max(N_materials,s[0]) if len(s)>0 else N_materials
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N_constituents = max(N_constituents,s[1]) if len(s)>1 else N_constituents
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shaped['v'] = np.array(1./N_constituents) if shaped['v'] is None else shaped['v']
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mat: Sequence[dict] = [{'constituents':[{} for _ in range(N_constituents)]} for _ in range(N_materials)]
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for k,v in shaped.items():
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target = (N_materials,N_constituents) + _dim.get(k,())
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obj = np.broadcast_to(np.array(v).reshape(util.shapeshifter(() if v is None else v.shape,
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target,
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mode = 'right')),
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target)
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for i in range(N_materials):
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if k in _constituent_properties:
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for j in range(N_constituents):
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mat[i]['constituents'][j][k] = obj[i,j].item() if isinstance(obj[i,j],np.generic) else obj[i,j]
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else:
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mat[i][k] = obj[i,0].item() if isinstance(obj[i,0],np.generic) else obj[i,0]
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dup = self.copy()
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dup['material'] = dup['material'] + mat if 'material' in dup else mat
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for what in [item for item in ['phase','homogenization'] if shaped[item] is not None]:
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for k in np.unique(shaped[what]): # type: ignore
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if k not in dup[what]: dup[what][str(k)] = None
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return dup
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