Simulating Almost Incompressible Deformable Objects

Raphael Diziol, Daniel Bayer and Jan Bender, Simulating Almost Incompressible Deformable Objects, Virtual Reality Interactions and Physical Simulations (VRIPhys), Karlsruhe, November 5-6, 2009

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Abstract

We present a new method for simulating almost incompressible deformable objects. A tetrahedral model is used to represent and restore the volume during the simulation. The new constraint computes impulses in the onering of each vertex of the tetrahedral model, in order to conserve the initial volume. With different parameters, the presented method can handle a large variety of different deformation behaviors, ranging from stiff to large deformations and even plastic deformations. The algorithm is easy to implement and reduces the volume error to less than 1% in most situations, even when large deformations are applied.

Armadillo

Armadillo (Mpeg)
Bar

Deformable bar (Mpeg)
Cube

Deformable cube (Mpeg)
Bar

Plastic deformation (Mpeg)
Cube

Twirl (Mpeg)