Map Fibre Orientation to LS-DYNA FE Model

Map Fibre Orientation to LS-DYNA FE Model

Script to open orientation tensor data output from Moldflow or an experimental measurement and map to an LS-DYNA model
1) Use the same coordinate system (not necessarily the same geometry) for the process and structural models.
2) This script can create one material model per element of the LS-DYNA model.
3) Highly recommended to simplify the LS-DYNA model to only a mesh of just the part (or region of a part) of interest for this application. A mixture of shell and solid elements in the part used with this script will likely cause problems.
4) Linear elastic only.
5) V1 features:
Micromechanics models: Halpin-Tsai, GSC, Mori-Tanaka
Closure approximations: 1) Linear 3D, 2) Linear 2D, 3) Quadratic, 4) Hybrid 3D, 5) Hybrid 2D, 6) Orthotropic smooth, 7) Orthotropic fitted, 8) Natural 2D, 9) ORW (Orthotropic - wide range of interaction coefficients)
LS-DYNA elements: Hexahedrons only (no collapsed hexahedrons = pentahedrons)
Moldflow: Tetrahedrons only (no other option, as of the time this script was written, for a Moldflow model employing solid elements)
6) Features to be added:
Non-linear stress-strain characteristics and/or failure
Support for tetrahedron and shell elements in LS-DYNA
Support for orientation prediction of Moldex
The material reference frame in the LS-DYNA model is currently fixed.
Ideally, the solver would automatically convert the material properties currently computed in the global reference frame to the local material reference frame (defined using the nodes of each element). If an element undergoes significant rotations, V1 of this script will not accurately predict material characteristics.