可控制的物体破碎模拟  

Controllable simulation of the shattering of objects

作　　者：武红霞[1] 严应超[2] 

机构地区：[1]郑州大学机械工程学院,河南郑州450002 [2]平顶山工业职业技术学院自动化系,河南平顶山467005

出　　处：《河南理工大学学报（自然科学版）》2005年第2期126-128,共3页Journal of Henan Polytechnic University（Natural Science）

基　　金：国家自然科学基金项目(59734090).

摘　　要：刚性约束的断裂临界力与约束连接的两个四面体单元的体积及共享面积有关,使得物体的破碎模拟与其物理属性联系起来,改变外力可控制物体破碎所形成碎块的数量、大小、形状.据计算出的刚性约束上的力,计算碎块的速度,提出的约束等价法把隐式碎块转化为显式碎块,可方便控制碎块的运动规律.以茶壶为例,在不同的外力作用下进行破碎模拟.The critical breaking strength of a constraint scales with the volume of the connected tetrahedra and with the area of their shared face. The breaking behavior will be influenced by the physical attributes. The number, size and shape of the fragments can be controlled by adjusting the strength crossing object. The forces crossing contraints which have been computed determine the velocities of the fragments. Constraint equivalence is presented. Concealed fragment and apparent fragments are formulated. Thus is used to controll the movement of the fragment.Finally, two trial applications verify the algorithms.

关 键 词：物理模型 刚性约束 约束等价法 显式碎块 计算机图形学 物体破碎 

分 类 号：TD451[矿业工程—矿山机电] TP391.9[自动化与计算机技术—计算机应用技术]