基于细分粒子的刚体破裂动画

为了模拟固体在外力作用下产生的破裂现象,提出一种采用细分粒子的刚体破裂的模拟算法.该算法首先将固体的四面体网格绑定到一系列离散的粒子上;再利用光滑粒子流体动力学（SPH）对线弹性力学方程进行离散求解;并采用粒子细分的算法来进行开裂面的生成和延展.最后实现了多个固体现象的模拟,如砖块碎落、砖墙受力倒塌等.文中算法可适用于刚体脆性破碎的动画应用.

Animation of Brittle Fracture Using the Subdivided Particles

To simulate the brittle fracture when the solid is influenced by the external force,a method on modeling brittle fracture is proposed.Firstly the tetrahedral mesh of the solid model is bound to a series of particles.Then the smoothed particle hydrodynamics （SPH） is used to solve the equation of linear elasticity,and a subdivided scheme is adopted to generate the fracture surface.Finally,the rendering of some scene of the brittle fracture is achieved,including brick falling,brick-wall collapsing.This method can be applied for simulating the brittle fracture of solids.