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About this paper
Yinwei Du, Yue Li, Stelian Coros, Bernhard Thomaszewski
A new contact modeling methodology employs smooth surface representations based on Implicit Moving Least Squares (IMLS) to resolve spurious tangential forces arising from C^0-discretizations in deformable body simulations. This approach enables accurate frictionless sliding and robust convergence for inverse design problems, overcoming limitations of prior methods like Incremental Potential Contact.
Key insights
- C^0-discretizations inherently introduce discontinuities and irregularities in tangential contact forces, creating artificial 'energy walls' that generate spurious friction-like effects.
- Achieving smooth and regular contact forces, essential for accurate physical interactions and robust optimization, necessitates a C^1-continuous surface representation for contact.
- Replacing piece-wise linear surface representations with smooth implicit surfaces effectively eliminates spurious tangential forces, yielding a more regular and convex energy landscape for optimization.
Summary by alphaXiv.
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