Frictional Contact on Smooth Elastic Solids

How to read this

Category

Method: frictional contact for deformable solids against implicit surfaces

Contributions

• Resolves frictional contact between deformable elastic objects and smooth implicit surfaces rather than polygonal meshes
• Augments a moving least squares implicit surface with a local contact kernel
• Develops a parallel transport approximation to transfer frictional impulses across the deforming surface

Context

Part of the physics-based contact and friction lineage for deformables, related to implicit frictional contact solvers such as Li et al.'s adaptive cloth work.Builds on: An Implicit Frictional Contact Solver for Adaptive Cloth Simulation

Correctness

The approach relies on a smooth implicit surface providing a consistent inside-outside partition and near-surface distance field; results are shown as robust, artifact-free elastic contact, but reliance on the MLS surface representation and the parallel-transport approximation are the assumptions to keep in mind.

Clarity

Technically dense (TOG); a first pass conveys the motivation, a second and likely third pass are needed for the formulation.

How to read it

Focus first on why implicit surfaces are chosen over meshes; do a careful second/third pass on the contact kernel and parallel-transport derivation if you intend to implement or extend it.