基于模型表示精度的装配干涉检测方法

发布时间：2018-06-10 02:56

本文选题：表示精度 + 装配干涉检测　；参考：《计算机集成制造系统》2017年06期

【摘要】：为了提高装配规划和仿真过程中干涉检测结果的精度,基于模型表示精度定义干涉误差,提出基于模型表示精度的三角面片二维和三维求交方法,计算相交面片之间的干涉量,修正干涉量在误差范围内的面片关系,从而消除伪干涉。给出了改进的装配干涉检测算法和流程,根据检测对象的运动轨迹分别采用投影检测方法与多次检测方法,以在保证精度的同时达到高效率。该算法适用于任何形状和类型的曲面模型,且不需要几何拓扑结构与装配约束信息,具有广泛的应用性。在AeroAssem系统中实现了该方法,分别在几何可拆卸性分析与装配仿真中进行实例验证,证明了该方法的有效性和精确性。
[Abstract]:In order to improve the precision of interference detection in assembly planning and simulation process, the interference error is defined based on the precision of model representation. A two-dimensional and three-dimensional intersection method of triangular surface is proposed based on the precision of model representation, and the interference between intersecting surfaces is calculated. To correct the patch relation of interference in the range of error, so as to eliminate the false interference. The improved assembly interference detection algorithm and flow chart are presented. Projection detection and multiple detection methods are used according to the motion trajectory of the detected object to ensure the accuracy and achieve high efficiency at the same time. The algorithm is suitable for surface models of any shape and type, and does not require geometric topology and assembly constraint information, so it has wide application. The method is implemented in AeroAssem system and verified by examples in geometric disassembly analysis and assembly simulation. The validity and accuracy of the method are proved.
【作者单位】：东北大学机械工程与自动化学院;东北大学计算机科学与工程学院;
【基金】：国家自然科学基金资助项目(51305074,51305073)~~
【分类号】：TG95;TP391.72

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