Continuous contact simulation for smooth surfaces
Continuous contact simulation for smooth surfaces
复制标题
光滑表面的连续接触模拟
DOI：
10.1145/588272.588280
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
D. Pai
中科院分区：
文献类型：
--
作者：
P. Kry;D. Pai
光滑表面刚体接触的动力学仿真是基于物理的动画和交互式虚拟环境中的一个关键问题。我们描述了一种技术，使用减少的坐标来发展一个光滑的分段参数曲面之间的连续接触。将摩擦力纳入我们的算法是直截了当的。动力学方程，虽然稍微复杂，由于减少坐标制定，可以很容易地集成使用显式积分器，而不需要约束稳定。减少坐标限制集成误差的约束流形，从而允许一个广泛的选择步长与视觉上可接受的结果。我们证明了这些结果使用循环细分曲面与参数评估。
Dynamics simulation of smooth surfaced rigid bodies in contact is a critical problem in physically based animation and interactive virtual environments. We describe a technique that uses reduced coordinates to evolve a single continuous contact between smooth piecewise parametric surfaces. The incorporation of friction into our algorithm is straightforward. The dynamics equations, although slightly more complex due to the reduced coordinate formulation, can be integrated easily using explicit integrators without the need for constraint stabilization. Reduced coordinates confine integration errors to the constraint manifold, thereby permitting a wide choice of step sizes with visually acceptable results. We demonstrate these results using Loop Subdivision surfaces with parametric evaluation.