New default 3D Fiber orientation model

A number of changes have been made to improve the accuracy of the 3D fiber orientation calculations.

Fiber orientation is one of the major factors that determines the mechanical (elastic) strength as well as the stiffness of a molded part.

A new 3D fiber orientation model, the Moldflow Rotational Diffusion (MRD) model, has been included in Autodesk Moldflow Insight 2017.3 as the default fiber orientation model for 3D. With this new model, we have improved the accuracy of prediction of the fiber orientation.

This model is the latest contribution to the fiber orientation models in 3D. The closure approximation model has been changed from Hybrid Closure to Orthotropic Closure in this release.