NAFEMS is an independent not-for-profit body with the sole aim of promoting the effective use of engineering simulation methods such as finite element analysis, multi-body system dynamics and computational fluid dynamics.
Altair is also part of the educational and training working group, which is formed to examine the education and training needs for all numerical analysts and to provide information and documents to satisfy these needs. This collaboration demonstrates the commitment of Altair towards the use of finite element analysis technology in every area of technical development.
Here is the OptiStruct Verification Problems Manual for NAFEMS Models – Click Here
Very useful information related to different FEM aspects can be found at NAFEMS Knowledge Base