FreeCADワークベンチFEM_FrontISTRを用いた種々解析への支援機能の拡張

抄録

FEM_FrontISTR is a tool that calls the analysis functions of FrontISTR, a parallel finite element method structural analysis software, as a workbench of FreeCAD, a CAD application with users in many countries. FEM_FrontISTR can smoothly perform all processes of finite element analysis from model geometry creation to visualization of analysis results on the same screen, which is a significant advantage over the pre and postprocessing tools conventionally used in FrontISTR. In previous developments, support for multiple materials and boundary conditions has been increased, and support environments have been built for analyses with nonlinearity, such as material nonlinearity and contact analysis. This paper focuses on the extension of analysis types and describes the implementation of functions for eigenvalue analysis and time history response analysis by time integration, which are included in the framework of dynamic analysis. With this implementation, about 70 % of the functions available in FrontISTR can now be performed through FEM_FrontISTR. FEM_FrontISTR is useful as an introductory tool for FrontISTR due to its low introduction cost, and in the future, there is a need for more tutorials for beginners.