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WeldFormFEM is an open-source Finite Element solver designed for nonlinear solid mechanics simulations involving large deformations, contact, and material plasticity.
Originally developed for forging simulations, the solver is modular and extensible, making it suitable for a wide range of forming and manufacturing processes such as:
Updated Lagrangian Implicit & Explicit Finite Element Method (FEM) CPU/GPU based solver.
WeldFormFEM works both on Ubuntu and Windows.
You can select to build it to CPU and GPU only by changing a single CMAKE var. \
- Forging
- Extrusion and stamping
- Indentation and hardness tests
- Solid mechanics under large strains
- Custom research on material behavior
- Implicit Velocity-Based Quasi-Static Solver (IVBQS)
- Explicit Dynamic Time integration
- Plasticity and large deformation support
- Remeshing for element quality preservation
- Graphical User Interface (GUI) in active development
- Written in C++, with clean modular design
- Integration with VTK, OpenCascade, and other libraries
- Ideal for experimentation, research, and education
Use cases Whether you're a researcher, engineer, or student, WeldFormFEM offers a sandbox for developing and understanding FEM solvers tailored to high-deformation processes. New capabilities like remeshing, GUI-based workflows, and scripting are actively being developed.
- Structure Of Arrays (SOA) data arrangement which allows fast CUDA accesing
- Explicit time integration
- C++/CUDA CPU/GPU(WIP) Architectures
- Constant Stress Tetra/Triangle Element with Average Nodal Pressure (ANP) for volumetric locking fixing
- Reduced Integration Hexaheadra with viscous hourglass control
- OpenMP (WIP) CPU parallelization
- Contact algorithm (WIP)
- Automatic Remeshing (rezoning) (WIP)
- 2D Plain Strain/Axisymm & 3D
- Thermal-Mechanical coupling (WIP)
Locking (left) and fixing (right) tetra
Compression cylinder
Compression cylinder HEXA w/reduced integration - TETRA
Bending
Hexa/Quad Hourglass
CUDACXX=/usr/local/cuda-12.3/bin/nvcc cmake ../WeldFormFEM -DBUILD_GPU=ON
To update libraries (LSDynaReader and Math)
git submodule update --init --recursive
TO BUILD MMG AVOID USING VTK
cmake PATH_DIR -DBUILD_MMG=ON -DUSE_VTK=OFF
Link here #https://arnon.dk/matching-sm-architectures-arch-and-gencode-for-various-nvidia-cards/ to see different architectures.
Cuurrently working axisymmetric with hourglass for area weight in F90 version
reduced_int = .True. call AddBoxLength(0, V, Lx, Ly, 1.0d0, r, rho, h,reduced_int)
!! AFTER ADD BOXLEN axisymm_vol_weight = .false. bind_dom_type = 3 !!!AXISYMM, AFTER CREATING BOX!
elem%sigma_y(:,:) = 300.0e6
do i=1,node_count print *, "NODE ELEMENTS " print *,"i count ", i , nod%elxnod(i),nod%nodel(i,:) end do
nod%is_fix(:,3) = .true.