Commit Graph

77 Commits

Author SHA1 Message Date
Martin Diehl 695d78eb35 have EOL and EOF 2023-01-08 14:32:13 +01:00
Martin Diehl 976cfd501a thermal expansion coefficients for SiC
this material was the initial motivation for adding fourth order
polynomials, but I could not find a reliable source for the graphs send
to damask@mpie.de. It seems that the CTE levels off for even higher
temperature which calls for a higher order polynomial
2023-01-08 14:31:43 +01:00
Martin Diehl eb74d5a097 polishing 2023-01-08 11:54:42 +01:00
Martin Diehl 64fbfbb206 re-fit with correct conversion between Celsius and Kelvin
procedure is documented in the 'parameters' repository
2023-01-08 10:58:01 +01:00
Martin Diehl b9195a121f commonly used scaling 2023-01-08 10:57:36 +01:00
Martin Diehl 1711bf3220 re-fit using correct scaling
code is in 'parameters' repository
2023-01-08 10:57:06 +01:00
Martin Diehl 81870a6111 re-fit data
some small adjustments, procedure is now reproducible using "parameters"
repository
2023-01-08 00:25:43 +01:00
Martin Diehl ef435ee7d1 commonly used variable name 2022-11-20 09:40:15 +01:00
Martin Diehl 28ea09050d polishing 2022-10-25 23:18:22 +02:00
Martin Diehl ff3e08531e including test 2022-10-23 12:42:17 +02:00
Martin Diehl 0c83245d4b example files for TWIP/TRIP
I'm not able to reproduce the results from https://doi.org/10.1016/j.actamat.2016.07.032,
but these parameters give results that are qualitatively ok
2022-09-22 16:39:23 +02:00
Martin Diehl 576c79a619 following DAMASK paper 2022-06-13 14:08:45 +02:00
Martin Diehl 9b94aca09f new example file 2022-06-08 23:28:54 +02:00
Martin Diehl 0f1d0cbd61 copy and paste error 2022-05-17 08:53:32 +02:00
Martin Diehl b3992e0ff0 test new example files 2022-05-16 23:24:29 +02:00
Martin Diehl cda6e0af35 some difference to pure Ni 2022-05-13 11:44:02 +02:00
Martin Diehl 37eb567451 dataset for Platinum 2022-05-13 11:10:02 +02:00
Martin Diehl bba105c2a8 re-fit, documented details 2022-02-13 18:37:34 +01:00
Martin Diehl e3a64ae4ff don't fit close to 0K
cryogenic temperatures are normally not of interest, avoid considering
the strongly curved region below 80K in the fit gives probably better
extrapolation properties for T>300K
2022-02-13 14:57:01 +01:00
Martin Diehl ba16ea21a0 avoid overfitting
there are only 3 data points for C_13, with one close to 0K. Leave this
point out and fit only a 1st order polynomial
2022-02-13 14:48:15 +01:00
Martin Diehl bb6a62c475 more temperature dependent data 2022-02-13 13:49:19 +01:00
Martin Diehl 80f5496ef2 adjustments and improved documentation 2022-02-12 22:20:51 +01:00
Martin Diehl 4d808335de polishing 2022-02-12 18:55:01 +01:00
Martin Diehl 3bdfc29fb2 Parameter set for beta-Sn 2022-02-12 15:42:39 +01:00
Martin Diehl 0f0108f603 polishing 2022-01-09 08:14:31 +01:00
Martin Diehl a884b99aa9 Merge remote-tracking branch 'origin/development' into physics-based-hex-interactions 2022-01-08 20:45:46 +01:00
Sharan Roongta c29428a609 Merge branch 'more-material-parameters' into 'development'
new material parameters

See merge request damask/DAMASK!490
2022-01-06 16:28:40 +00:00
Martin Diehl 4a0a1f7ac9 paper is online 2022-01-02 22:29:48 +01:00
Martin Diehl 7e4a374c9e new material parameters
- austenitic steel AISI304
- SAE1050 after quenching to martensite

I don't know how the old set of elastic constants for martenstite
(originally coming from 10.1088/0965-0393/23/4/045005) was derived,
but it is hard to believe that the elastic behavior can be that strongly
modified by a heat treatment.
2021-12-27 21:10:28 +01:00
Sharan Roongta 32e741ae2c elastic constants for bcc iron 2021-12-21 15:54:46 +01:00
Martin Diehl fd3e8532ee polishing 2021-12-13 16:50:47 +01:00
Martin Diehl d3a8b3d3d1 polishing 2021-12-13 16:46:01 +01:00
Nikhil Prabhu e330348c98 Temperature-dependent Elastic Constants for Aluminum 2021-12-13 16:38:31 +01:00
Nikhil Prabhu b41d9411a7 Temperature-dependent Elastic Constants for Silver 2021-12-13 16:30:46 +01:00
Sheng Zhang d66b9e1896 subdivision of interaction matrix for hcp 2021-12-06 16:51:18 +01:00
Martin Diehl fe2123bae4 2. order prismatic systems are not needed
not clear for which material they have been introduced, according to
T.R. Bieler and P. Eisenlohr they are typicall not active in any
material of interest
2021-12-06 12:23:24 +01:00
Philip Eisenlohr 5ba59dead2 polish 2021-11-25 14:07:41 -05:00
Martin Diehl 97ffb8c88e guide the user
+ needed for consistent indentation (make YAMLlint happy)
2021-11-24 20:02:08 +01:00
Martin Diehl 719996f285 trailing definitions not needed 2021-11-24 15:52:38 +01:00
Martin Diehl 56bc3bc71d simplify counting, emphasize floating point values 2021-11-24 15:48:11 +01:00
Martin Diehl 2e3de727cc hint at issues with the current parametrization 2021-11-02 07:27:08 +01:00
Martin Diehl 3f3224a9cb found better source 2021-10-31 18:59:57 +01:00
Martin Diehl 737eff9179 bugfix: change of behavior
v_0 was erroneously introduced
use tau = (tau_pos+tau_neg)/2
2021-10-31 18:59:51 +01:00
Martin Diehl a352f8deeb reasonable convergence 2021-10-31 16:05:22 +01:00
Martin Diehl fbc4865c30 mathematically equivalent re-formulation
allows to disable contribution from grain size by setting it to a large
value
2021-10-31 15:42:18 +01:00
Martin Diehl 25ca77c38e parameters from original paper (mostly) 2021-10-31 13:34:48 +01:00
Martin Diehl 0107acff16 original data was given in min^-1 2021-08-14 13:12:21 +02:00
Martin Diehl 809365cd72 reference for 1.4/1 2021-08-14 13:01:37 +02:00
Martin Diehl 931dc99557 not used
climb formulation was updated a while ago
2021-07-24 11:21:07 +02:00
Martin Diehl 6f906647eb documenting hex 2021-07-24 09:35:27 +02:00