The software application published by MFB Geo Consulting that includes a feature/module/file named **femapnx_nas_dyn_fep** is likely to be related to the Femap software, which is a finite element analysis (FEA) pre- and post-processor.
The **femapnx_nas_dyn_fep** file or module typically relates to dynamic analysis capabilities in an engineering context, possibly involving nonlinear analysis or dynamic finite element procedures. In Femap,