Simple implementation of a Saint-Venant-Kirchhoff force field

This plugin can be used as a simple demonstration of how SOFA "force fields" components are built up. In this case, the force field API will provide the internal potential energy, residual and jacobian of a Saint-Venant-Kirchhoff material assembled on linear tetrahedral meshes. These three function will be used by the system assembler and ODE solvers of SOFA.

Compiling with Ubuntu LTS 20.04

SOFA (skip this if you already compiled SOFA)

user@host:~$ sudo apt install qtbase5-dev libqt5charts5-dev libqt5opengl5-dev libopengl0 libeigen3-dev libglew-dev zlib1g-dev libboost-dev libboost-filesystem-dev g++ cmake git
user@host:~$ export SOFA_SRC=/opt/sofa_src
user@host:~$ export SOFA_ROOT=/opt/sofa
user@host:~$ git clone https://github.com/sofa-framework/sofa.git $SOFA_SRC
user@host:~$ cmake -DCMAKE_INSTALL_PREFIX=$SOFA_ROOT -DCMAKE_BUILD_TYPE=Release -S $SOFA_SRC -B $SOFA_SRC/build
user@host:~$ cmake --build $SOFA_SRC/build -j4
user@host:~$ cmake --install $SOFA_SRC/build

SofaSimpleForcefield

user@host:~$ export SSFF_SRC=/opt/SofaSimpleForceField_src
user@host:~$ git clone https://github.com/jnbrunet/SofaSimpleForcefield.git $SSFF_SRC
user@host:~$ cmake -DCMAKE_PREFIX_PATH=$SOFA_ROOT/lib/cmake -DCMAKE_INSTALL_PREFIX=$SOFA_ROOT/plugins/SofaSimpleForceField -DCMAKE_BUILD_TYPE=Release -S $SSFF_SRC -B $SSFF_SRC/build
user@host:~$ cmake --build $SSFF_SRC/build -j4
user@host:~$ cmake --install $SSFF_SRC/build

Running the cantilever example scene

user@host:~$ $SOFA_ROOT/bin/runSofa -l SofaSimpleForceField $SSFF_SRC/cantilever_beam.scn

Result