复杂几何模型接触关系并行识别方法及应用  

Automatic Contact Identification in Complex Geometry Model and Application

作　　者：刘田田 刘伟杰 杨洋 郑澎 LIU Tian-tian;LIU Wei-jie;YANG Yang;ZHENG Peng(CAEP Software Center for High Performance Numerical Simulation,Beijing 100088;Institute of Applied Physics and Computational Mathematics,Beijing 100094;Institute of Computer Application CAEP,Mianyang Sichuan 621900)

机构地区：[1]中物院高性能数值模拟软件中心,北京100088 [2]北京应用物理与计算数学研究所,北京100094 [3]中国工程物理研究院计算机应用研究所,四川绵阳621900

出　　处：《计算机仿真》2022年第5期319-323,共5页Computer Simulation

摘　　要：面向装配信息缺失的复杂几何模型结构分析问题,提出一种适用于任意曲面类型的接触关系并行识别方法。根据模型几何特征自动计算局部容差,采用基于局部容差的三角形碰撞检测技术进行接触识别,有效提升算法精度。利用多线程并行技术,结合包围盒筛选技术和空间划分技术提高识别效率。算法能高效地自动识别数百上千部件模型包含的接触关系。通过对复杂几何模型的测试表明,算法具有高精度、高效率的特点。最后,将接触关系识别的结果应用到实际工程模型的结构分析计算中,进一步验证了算法的有效性。A new parallel contact identification method for structural analysis of complex geometry models that lost assembly information is presented in this paper.The method is applicable to models containing any type of geometry surface.Local tolerances between faces in the model are calculated according to the geometric features,and the collision detections based on local tolerance are carried on to detect contacts.Multi-thread parallel technology,the bounding box filter technology and space division technique are used to improve the efficiency.The algorithm is applicable to identify contacts for complex geometries containing hundreds of entities.The results of the complex assembly model show that the algorithm is efficient and high-precision.In addition,the example of structural analysis for the actual engineering model further verifies the effectiveness of the algorithm.

关 键 词：接触关系 自动识别 并行算法 复杂几何模型 结构分析计算 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] N945.12[自动化与计算机技术—计算机科学与技术]