A New Grid Structure for Domain Extension

Bo Zhu, Wenlong Lu, Matthew Cong, Byungmoon Kim, Ronald Fedkiw We present an efficient grid structure that extends a uniform grid to create a significantly larger far-field grid by dynamically extending the cells surrounding a fine uniform grid while still maintaining fine resolution about the regions of interest. The far-field grid preserves almost every computational advantage of […]

Posted by christopherbatty on July 30th, 2013 | Comments Off on A New Grid Structure for Domain Extension Posted in Fluids

A Level Set Method for Ductile Fracture

Jan Hegemann, Chenfanfu Jiang, Craig Schroeder, Joseph M. Teran We utilize the shape derivative of the classical Griffith’s energy in a level set method for the simulation of dynamic ductile fracture. The level set is defined in the undeformed configuration of the object, and its evolution is designed to represent a transition from undamaged to […]

Posted by christopherbatty on July 25th, 2013 | Comments Off on A Level Set Method for Ductile Fracture Posted in Deformables, Fracture

Efficient Simulation of Secondary Motion in Rig-Space

Fabian Hahn, Bernhard Thomaszewski, Stelian Coros, Sebastian Martin, Robert Sumner, Markus Gross We present an efficient method for augmenting keyframed character animations with physically-simulated secondary motion. Our method achieves a performance improvement of one to two orders of magnitude over previous work without compromising on quality. This performance is based on a linearized formulation of […]

Posted by christopherbatty on July 25th, 2013 | Comments Off on Efficient Simulation of Secondary Motion in Rig-Space Posted in Deformables

Subspace Integration with Local Deformations

David Harmon, Denis Zorin Subspace techniques greatly reduce the cost of nonlinear simulation by approximating deformations with a small custom basis. In order to represent the deformations well (in terms of a global metric), the basis functions usually have global support, and cannot capture localized deformations. While reduced-space basis functions can be localized to some […]

Posted by christopherbatty on July 25th, 2013 | Comments Off on Subspace Integration with Local Deformations Posted in Deformables

Thin Skin Elastodynamics

Duo Li, Shinjiro Sueda, Debanga R. Neog, Dinesh K. Pai We present a novel approach to simulating thin hyperelastic skin. Real human skin is only a few millimeters thick. It can stretch and slide over underlying body structures such as muscles, bones, and tendons, revealing rich details of a moving character. Simulating such skin is […]

Posted by christopherbatty on July 19th, 2013 | Comments Off on Thin Skin Elastodynamics Posted in Cloth, Deformables, Shells

A Hybrid Lagrangian-Eulerian Formulation for Bubble Generation and Dynamics

Saket Patkar, Mridul Aanjaneya, Dimitriy Karpman, Ronald Fedkiw We present a hybrid Lagrangian-Eulerian framework for simulating both small and large scale bubble dynamics, where the bubbles can grow or shrink in volume as dictated by pressure forces in the surrounding fluid. Small under-resolved bubbles are evolved using Lagrangian particles that are monolithically two-way coupled to […]

Posted by christopherbatty on July 13th, 2013 | Comments Off on A Hybrid Lagrangian-Eulerian Formulation for Bubble Generation and Dynamics Posted in Fluids