Finite Element and Numerical Methods with Integrable / Differentiable Objects.
      
      

FEMAP/Demo (free under 300-nodes limit) from Enterprise Software Products (downloads of programs and documents available at http://www.entsoft.com/downloads.html) is a powerful, industrial leading finite element pre-and-post processor. The following images and animations are constructed with the help of FEMAP and numerically anlayized with C++ programs using fe.lib. The "neutral file format" of FEMAP is used to transfer data to C++ program using fe.lib, then back to FEMAP for post-processing. (Click here for C++ codes, for the following examples, interfacing FEMAP and C++ programs using fe.lib.)

1. A 3-D Simple Solid (Ref. see FEMAP Examples Book Chapter 8 Simple Solid.)

3-D finite element modeling using FEMAP as a finite element pre-processor.

Contours of J2 for the same problem produced by FEMAP.

Iso-surfaces of J2 for the same problem produced by FEMAP.

2. Stripe with a hole Contours of yield ratio (Elastoplasticity with (A) infinitesimal deformation formulation, and (B) finite deformation formulation; only 1/4 of the model is analized due to symmetry.)

(A) Infinitesimal elastoplastic deformation formulation   (0-0.555% streching,  Ref. see VSP's Online Workbook Chapter 5 Advanced Finite Element Methods on Section Elastoplasticity.)

(B) Finite elastoplastic deformation formulation (up to 1/3 stretching,  Ref. see VSP's Online Workbook Chapter 5 Advanced Finite Element Methods on Section Finite Deformation Elastoplasticity.)

3. Contact Problem: a frictionless rigid sled on elastic foundation (Ref. see VSP's Online Workbook: Chapter 5 Advanced Finite Element Methods on Section Contact Mechanics)

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