Implicit Finite Element Method

for Elastic Solids in Contact

Gentaro Hirota

My Dissertation


Computer Animation 2001 Paper

MSWORD File (2MB) and PDF File (1.2MB)

Various Material Models and the Material Synthesizer

Quick Time 1.7MB (320x240)

Quick Time 4.8MB (640x480)

In this clip, three materials are compared.  Mooney-Rivlin (yellow), Veronda (green), and a fiber-reinforced Mooney-Rivlin (cyan) exhibit different responses to gravitational load.

This is an example of Material Synthesizer. The material parameters can be interactively manipulated by using JAVA applets. The graph below shows the highly nonlinear strain-stress curve of the Veronda model.


Dynamic Analysis

QuickTime 3MB

A 5x7 array of bars attached on a 45 degree slope are deformed by their own weights.

Static Analysis

A tetrahedral mesh of a human leg was generated from Visible Man Data.
QuickTime 7MB
The sound is from Mel Brooks's "Young Frankenstein."
QuickTime 1.3MB
The shape of skin in a knee flexion.
QuickTime 5.8MB
This clip starts as opaque skin display, and turns into wire frame rendering that reveals skin, muscles, and bones.
QuickTime 4.9MB
Notice the patella (knee cap) sliding over the thigh bone (femur).
QuickTime 8.2MB Quick Time 13MB
These clips show the cross section to examine sliding contact between various organs. Small cubes are node points of the finite element mesh.
QuickTime 1.6MB
Close-up of the cross section view.