jinghu-ut / td-bem

Time domain boundary element code for elastodynamics, using Stokes' solution as the Green's function.

TD-BEM

A Parallel C++ Time-Domain Boundary Element code for elastodynamics analysis of solids;

External libraries

• MPI for parallel programing;
• Petsc for solving large-scale linear equation system;
• Results can be written in VTK format and visualized with paraview;

Key Boundary Element Techniques

• Regularization by Extracting the hyper-singular part of the Green's function;
• Singluar transformation for weakly-singluar element;
• Time marching with weighted collocation and higher-order projection;

How to compile it

• Step 1: Specify the directories of include and library for MPI and PETSC in the CMakeFile
• Step 2: mkdir build; cd build;
• Step 3: cmake ..; make

How to use it

• mpirun -np 2 ./TD-BEM inputfile.txt
• Example of inputfile can be found in folder named "Geometry"

How to do Finite Element - Boundary Element coupling

• Output the boundary element matrices from the main()
• Use the FE-BE code to do FE-BE coupling