3.2. linearODF file


Purpose

The *.linearODF files are used to provide ODF intensity data from macro texture measurements. The files are read in by DAMASK as defined in the texture section of the material.config file. The data is then used to sample single orientations using the hybridIA scheme [1] where the number of orientations needed is automatically determined by DAMASK. Finally the orientations are randomly assigned to the integration (FEM) or Fourier (spectral solver) points.


parent_gray

Syntax

The file starts with a three line header followed by an empty line before the list of intensities. The first header line contains three numbers specifying the maximum Euler angles of the ODF $max\ \varphi_1$, $max\ \Phi$, and $max\ \varphi_2$. The second line is used to specify the step (bin) size for the three Euler angles $\Delta \varphi_1$, $\Delta \Phi$, and $\Delta \varphi_2$. The third line determines the voxel (bin) placement. It can either read "voxel boundary at origin" or "voxel center at origin". After one empty line the list of ODF intensities follows. This list is sorted by Euler angles with $\varphi_2$ running first, then $\Phi$ and finally $\varphi_1$. I.e. the first intensity value is for the Euler angles (0, 0, 0), the second for (0, 0, $\Delta \varphi_2$), the third for (0, 0, $2\Delta \varphi_2$) and so on until (0, 0, $max\ \varphi_2$), then follow (0, $\Delta \Phi$, 0), (0, $\Delta \Phi$, $\Delta \varphi_2$) and so on all the way to ($max\ \varphi_1$, $max\ \Phi$, and $max\ \varphi_2$). In total $max\ \varphi_1 / \Delta \varphi_1 * max\ \Phi / \Delta \Phi * max\ \varphi_2 / \Delta \varphi_2$ intensiteis must be specified. The intensities do not need to be normalized, this is automatically handled by DAMASK.


parent_gray

Example

The sample files provided with DAMASK is given here in short form


parent_gray
1 header
phi1    PHI    phi2    intensity
2.5		2.5		2.5		0.560461
2.5		2.5		7.5		0.603906
2.5		2.5		12.5		0.756228
2.5		2.5		17.5		0.979027
2.5		2.5		22.5		1.15566
...
...
...
357.5		177.5		332.5		1.1835
357.5		177.5		337.5		0.922203
357.5		177.5		342.5		0.711097
357.5		177.5		347.5		0.601503
357.5		177.5		352.5		0.58171
357.5		177.5		357.5		0.620167


parent_gray

References

[1] P. Eisenlohr, F. Roters: Selecting sets of discrete orientations for accurate texture reconstruction, Computational Materials Science 42 (2008) 670 - 678
Topic revision: r4 - 10 Apr 2019, MartinDiehl


  • News
26 Mar 2019
DREAM.3D 6.5.119
(released 2019/03/22) comes with a DAMASK export filter
25 Mar 2019
Release of version v2.0.3
21 Jan 2019
DAMASK overview paper finally published with full citation information available
01 Dec 2018
DAMASK overview paper now online
17 Sep 2018
CMCn2018 & DAMASK user meeting to be hosted at Max-Planck-Institut für Eisenforschung
22 May 2018
Release of version v2.0.2
01 Sep 2016
CMCn2016 & DAMASK user meeting to be hosted at Max-Planck-Institut für Eisenforschung
25 Jul 2016
Release of version v2.0.1
08 Mar 2016
Release of version v2.0.0
22 Feb 2016
New webserver up and running
09 Feb 2016
Migrated code repository from Subversion to GitLab
17 Dec 2014
Release of revision 3813
14 May 2014
Release of revision 3108
02 Apr 2014
Release of revision 3062
16 Oct 2013
Release of revision 2689
15 Jul 2013
Release of revision 2555
15 Feb 2013
Release of revision 2174
13 Feb 2013
Doxygen documentation
16 Dec 2012
Powered by MathJax rendering
23 Nov 2012
Release of revision 1955
15 Nov 2012
Release of revision 1924
01 Nov 2012
Updated sidebar
30 Oct 2012
Significant website updates and content extensions


This site is powered by FoswikiCopyright by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding DAMASK? Send feedback
§ Imprint § Data Protection