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动力学修正的柔性体复合变形算法

Soft Body Compound Deformation Algorithm with Dynamics Correction
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摘要 传统柔性体变形算法存在动力学仿真不足的问题,为此,提出一种基于物理意义的复合变形算法。使用填充球模型丰富柔性体的动力学性质,解耦模型的局部变形和整体变形。柔性体外表面采用弹簧-质点模型,通过虚拟力的分层渲染,增强操作者的触觉感受。同时采用Shape Matching算法对模型的重心位置进行修正,解决由局部向全局传递形变的过程中出现的形变滞后问题,提高柔性体力觉交互过程中动力学仿真的准确性。 A compound deformation algorithm based on physics is proposed,which is adapted to the conventional simulation of the deformable objects that is poor at dynamic performance.This new algorithm is decoupled local and global deformation by using a filling sphere modeling approach.Through layered rendering of virtual force,the spring-mass system on the surface enhances immersion for virtual environment.For the problem of deformation hysteresis,correcting the position of barycenter using shape matching makes the result of dynamic simulation more exact.
作者 王朔 杨光 丑武胜
机构地区 北京航空航天大学机械工程及自动化学院
出处 《计算机工程》 CAS CSCD 北大核心 2011年第20期271-273,共3页 Computer Engineering
基金 国家自然科学基金资助项目(60775051)
关键词 柔性体变形 动力学修正 弹簧-质点模型 填充球模型 力觉分层渲染 soft body deformation dynamics correction spring-mass model filling sphere model force layered rendering
分类号 TP391.41 [自动化与计算机技术—计算机应用技术]
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参考文献8

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二级参考文献4

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计算机工程
2011年 第20期

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