Graphical modeling and animation of brittle fracture

摘要

In this paper,we augment existing techniques for simulating flex-ible objects to include modles for crack initiation adn propagation in three-dimensional volumes.By analyzing the stress tensors computed over a fintie element model,the simulation determines where cracks should initiate and in what directions thaey should propagate.We demonstrate our results with animations of breakign bowls,cracking walls,and objects that frature when then collide.By varyign the shape of the objects,the material properties,and the initial ocnidtiosn of the simulatiosn,we cna create strikingly different effects ranging from a wall that shatters when it is hit by a wrecking ball to a bowl that breaks in two when it is dropped on edge.