Computer Graphics

University of California - Berkeley

Modal Analysis for Real-Time Viscoelastic Deformation


This technical sketch describes how a standard analysis technique known as modal decomposition can be used for real-time model- ing of viscoelastic deformation. While most prior work on inter- active deformation has relied on geometrically simple models and advantageously selected material parameters to achieve interactive speeds, the approach described here has two qualities that we believe should be required of a real-time deformation method: the simulation cost is decoupled from both the model’s geometric complexity and from stiffness of the material’s parameters. Additionally, the simulation may be advanced at arbitrarily large time-steps without introducing objectionable errors such as artificial damping.


Chen Shen, Kris K. Hauser, Christine M. Gatchalian, and James F. O'Brien. "Modal Analysis for Real-Time Viscoelastic Deformation". In Proceedings of SIGGRAPH 2002, Technical Sketch, July 2002.