爆炸冲击波对桥梁毁伤的实时模拟

Real time simulation of the shattering of bridge caused by the blast wave

文章介绍了一种模拟爆炸冲击波对桥梁毁伤过程的方法。该方法用 3DMAX建立桥梁的表面模型并用 VRML格式保存 ,然后使用 Delaunay三角剖分算法对表面模型进行三角剖分 ,并构造出一种由三菱柱组成的三维实体模型来模拟桥梁的断裂及碎片的产生和运动。文中采用了简单的冲击波——球形冲击波 ,结合随机函数求解各碎片的初始速度 ,计算出每帧内各碎片的位置 ,最后生成桥梁毁伤的动画效果。该方法能逼真地表现出桥梁受冲击波毁伤的效果 。

This paper present a method of simulating the shattering of bridge caused by blast wave.In this method,we use 3DMAX to build the surface model of the bridge and save it in VRML(Virtual Reality Modeling Language),then we use Delaunay triangulation algorithm for the division of the surface model,we introduce a three dimension solid model constituted by prisms to simulate the rupture of the bridge, the generation and movement of the fragments,we adopt a simple blast wave-spherical wave, the initial velocity of debris is calculated based on the control function.After calculating the location of every debris, we can get the simulation of the shattering of a bridge. the effects can be simulated realistically, and this method can meet the requirement of real-time.