基于半边数据结构的虚拟弹体爆炸过程的模型研究  

MODEL FOR VIRTUAL BOMB EXPLOSION BASED ON HALF-EDGE DATA STRUCTURE

作　　者：张正军[1] 刘伯英[1] 吴慧中[1] 

机构地区：[1]南京理工大学计算机科学与技术系,江苏南京210094

出　　处：《兵工学报》2003年第2期157-161,共5页Acta Armamentarii

摘　　要：虚拟弹体爆炸过程中破片的生成以及其运动是模拟爆炸真实性和杀伤力的关键。其中 ,破片的生成是虚拟弹体爆炸的难点。虚拟弹体爆炸的传统方法是以粒子系统为基础 ,采用纹理粘贴的方法 ,但没有考虑到实际爆炸过程中破片生成及其运动的力学原理和相关特征。本文首先提出了一个适合于虚拟弹体爆炸的具有运动特征的随机半边数据结构。其次 ,在爆炸力学的基础上 ,根据爆炸的相关特征构造出虚拟弹体爆炸过程中三个阶段的模型 :膨胀模型、破裂模型及破片运动模型。Simulating the generation and motion of fragments of a bomb's explosion is the key to authenticity and lethality in the simulation of the explosion effect. Simulating the generation of fragments is a difficulty. The traditional method to simulate an explosion is based on particle system with texture paste drawing. These methods ignore the mechanical principles and the related characteristics of fragments generation and motion in real explosion. A data structure was advanced that is suitable for the simulation of bomb explosion--stochastic half edge data structure with motion characteristics. According to the relational mechanical characteristics, namely, stress field of the bomb in explosion, three models were constructed for the three phases during an explosion,namely: expanding model of the bomb body, bursting model of the bomb body and motion model of the fragments. The frame of the structure of the three models and an algorithm for the whole process of the bomb explosion were given.

关 键 词：随机半边数据结构 弹体爆炸过程 虚拟模型 膨胀过程 破裂过程 破片飞散过程 算法流程 

分 类 号：TJ414[兵器科学与技术—火炮、自动武器与弹药工程] TP391.9[自动化与计算机技术—计算机应用技术]