Volume Preserving Simulation of Soft Tissue with Skin

How to read this

Category

Method: a volume-preserving soft tissue simulation

Contributions

• Replaces indirect volume preservation via Poisson's ratio with direct enforcement of zonal volume constraints
• Controls fine-scale volumetric deformation with a cell-wise compression penalty
• Adds an epidermis model mimicking the higher surface stiffness of real skinned bodies for more plausible flesh and skin deformation

Context

Builds on finite-element flesh simulation for characters (Teran et al.'s robust quasistatic finite elements and flesh simulation), changing how volume conservation is enforced.Builds on: Robust Quasistatic Finite Elements and Flesh Simulation

Correctness

Claims reliable volume conservation and plausible flesh-and-skin behavior for character animation; results are demonstrated on character soft tissue, so the constraint and skin-stiffness model should be judged on those examples rather than assumed to transfer to all materials or large deformations.

Clarity

The motivation (direct zonal constraints over Poisson's-ratio coupling, plus a skin layer) is clear; the constraint formulation and penalty need a second pass.

How to read it

First pass for the volume-preservation and epidermis idea and why it improves realism; second pass on the constraint and compression-penalty math if you implement the solver.