# ppf-contact-solver | ZOZO, Inc. | Knowledge Base | Instagit

A contact solver for physics-based simulations involving 👚 shells, 🪵 solids and 🪢 rods.

GitHub Stars: 3.6k

Repository: https://github.com/st-tech/ppf-contact-solver

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## Articles

### [How Session Parameters (frames, dt, step_size) Impact Simulation Accuracy and Performance in PPF Contact Solver](/st-tech/ppf-contact-solver/impact-session-parameters-simulation-accuracy-performance)

Discover how PPF contact solver session parameters frames, dt, and step_size affect simulation accuracy and performance. Optimize your simulations for better results and efficiency.

- Tags: performance
- Published: 2026-05-27

### [How to Implement Pinned Constraints in ppf-contact-solver: Vertex Groups and Animation Methods](/st-tech/ppf-contact-solver/implement-pinned-constraints-supported-vertex-groups)

Implement pinned constraints in ppf-contact-solver using PinHolder and transformation operations. Learn about supported vertex groups and animation methods for precise control.

- Tags: how-to-guide
- Published: 2026-05-27

### [How to Configure Strain Limiting Parameters to Prevent Mesh Deformation in PPF Contact Solver](/st-tech/ppf-contact-solver/configure-strain-limiting-parameters-mesh-deformation)

Prevent mesh deformation in the PPF Contact Solver by configuring strain limiting parameters. Learn how to set enable_strain_limit and strain_limit values effectively.

- Tags: how-to-guide
- Published: 2026-05-27

### [Core Architecture of the FEM-Based Elasticity Solver in ppf-contact-solver](/st-tech/ppf-contact-solver/architecture-fem-elasticity-solver-ppf-contact-solver)

Explore the core architecture of the FEM-based elasticity solver in ppf-contact-solver. Discover its GPU-accelerated finite-element pipeline for efficient dynamic elastic simulations on CUDA.

- Tags: architecture
- Published: 2026-05-27