• Free Finite Element Solver

    Over 30 years of Development

  • Compatible with Nastran

    BDF File Compatibility

  • Professional Grade

    Wide Range of Applicability


MYSTRAN is a general purpose finite element analysis computer program for structures that can be modeled as linear (i.e. displacements, forces and stresses proportional to applied load). MYSTRAN is an acronym for "My Structural Analysis", to indicate it's usefulness in solving a wide variety of finite element analysis problems on a personal computer (although there is no reason that it could not be used on mainframe computers as well). For anyone familiar with the popular NASTRAN computer program developed by NASA (National Aeronautics and Space Administration) in the 1970's and popularized in several commercial versions since, the input to MYSTRAN will look quite familiar. Indeed, many structural analyses modeled for execution in NASTRAN will execute in MYSTRAN with little, or no, modification. MYSTRAN, however, is not NASTRAN. All of the finite element processing to obtain the global stiffness matrix (including the finite element matrix generation routines themselves), the reduction of the stiffness matrix to the solution set, as well as all of the input/output routines are written in independent, modern, Fortran 90/95 code. The major solution algorithms (e.g., triangular decomposition of matrices and forward/backward substitution to obtain solutions of linear equations), however, were obtained either from the popular LAPACK and ARPACK codes available to the general public on the World Wide Web or from freely available sparse matrix routine libraries.

PRIMARY AUTHOR: Dr. Bill Case was a member of the project management team for the development of the popular NASTRAN finite element analysis computer program developed in the late 1960's and early 1970's for the National Aeronautics and Space Administration (NASA). Over the course of 30 plus years from that time he was a structural analyst using NASTRAN and subsequently the head of an analysis branch comprised of approximately 20 analysts who used NASTRAN on many of the spaceflight structures built or managed by NASA Goddard Space Flight Center (GSFC). He has taught many graduate level courses in the area of static and dynamic structural analysis as well as basic and advanced courses in the use of NASTRAN. He is the author of many technical papers in the areas of finite element analyses and in the use of NASTRAN for major flight projects. From 2005 through 2011, Dr Bill Case was the president of MYSTRAN Software Inc (MSI) and developed and enhanced the MYSTRAN finite element analysis program to provide analysts with a cost effective solution for finite element analysis software. At the end of 2011 he dissolved MSI and is now providing MYSTRAN as a free tool for analysts to use. He will continue to try to keep the current version up and running.


Direct Download Link - For End Users (Compiled Windows EXE, Documentation, Test Runs, Other Files)

GitHub - Source Code for Developers


Forums - Developers and General Discussion


Dr. Bill Case, Ph.D. - www.mystran.com - Primary Author

Brian Esp, Ph.D, P.E. - ESP Composites and Structural FEA - Project Oversight

Additional developers, in alphabetical order by last name:

Steven Doyle - github.com/SteveDoyle2/pyNastran - OP2 Development

Robert Kiser, P.E. - K2 Engineering, Inc.

Be a part of the community by joining the forums or contacting Bill at the email below.


Some of the pre/post processors that are compatible with MYSTRAN:

1D Elements - Pre/Post for 1D Elements (beams, rods, springs) in 2D space

pyNastran - Visually Read, Write, Edit BDF Files

FEX - Visually Interrogate BDF Files

For additional information about these programs, see this thread in the forum


For inquiries, email dbcase29 "AT" gmail "DOT" com