When reading papers about visco-plastic or elasto-viscoplastic simulation, all authors only say that the orientation of grain used in the simulation can be randomly generated, and does not refer to how to generate them. I know the orientation of grain can be expressed by Euler angles (phi1, ph, phi2), but can someone give me advice how to generate euler angles?
An example of Euler Angles using ANSYS
Mr. Zeng,
I wrote a paper a couple of years ago. It used Euler Angles. Hopefully, you may find it helpfull:
IEEE TRANSACTIONS ON ELECTRONICS PACKAGING MANUFACTURING, VOL. 29, NO. 4, OCTOBER 2006, P265. Digital Object Identifier: 10.1109/TEPM.2006.887393.
The pre-print was posted on iMechanica: http://www.imechanica.org/node/226