非结构多边形网格滑移线开穴算法
发布时间：2019-05-16 18:40
【摘要】：基于非结构任意多边形网格管理体系及束缚滑移技术,针对多介质多次加卸载大变形问题的模拟,发展滑移线开穴算法,并利用金属碰撞分离模型进行验证.给出滑移线上的点和网格的开闭穴状态判别方法及网格开闭情况下滑移线上点的速度计算方法.该滑移计算技术将传统结构网格的开穴算法推广到拉氏非结构多边形网格中,保留拉氏滑移算法无缝连接和较好模拟物质界面的优点,实现了模拟实际问题中物质界面开闭功能.在金属碰撞分离模型中采用多种网格、不同界面形状和多介质等条件进行测试,证明了算法的正确性.
[Abstract]:Based on the unstructured arbitrary polygonal grid management system and bound slip technology, the slip line hole opening algorithm is developed for the simulation of multi-medium multiple loading and unloading large deformation problem, and the metal collision separation model is used to verify the algorithm. The discriminant method of the open and closed hole state of the point on the slip line and the velocity calculation method of the point on the slip line under the condition of open and closed grid is given. The slip calculation technique extends the hole opening algorithm of the traditional structural grid to the Lagrangian unstructured polygonal grid, and preserves the advantages of seamless connection of the Lagrangian slip algorithm and good simulation of the material interface. The function of opening and closing the material interface in the simulation of practical problems is realized. In the metal collision separation model, a variety of grid, different interface shapes and multi-media conditions are used to test, and the correctness of the algorithm is proved.
【作者单位】： 北京应用物理与计算数学研究所;
【基金】：国家自然科学基金(11372051) 中国工程物理研究院院长基金(2014-1-042)资助项目
【分类号】：O35
，
本文编号：2478483
[Abstract]:Based on the unstructured arbitrary polygonal grid management system and bound slip technology, the slip line hole opening algorithm is developed for the simulation of multi-medium multiple loading and unloading large deformation problem, and the metal collision separation model is used to verify the algorithm. The discriminant method of the open and closed hole state of the point on the slip line and the velocity calculation method of the point on the slip line under the condition of open and closed grid is given. The slip calculation technique extends the hole opening algorithm of the traditional structural grid to the Lagrangian unstructured polygonal grid, and preserves the advantages of seamless connection of the Lagrangian slip algorithm and good simulation of the material interface. The function of opening and closing the material interface in the simulation of practical problems is realized. In the metal collision separation model, a variety of grid, different interface shapes and multi-media conditions are used to test, and the correctness of the algorithm is proved.
【作者单位】： 北京应用物理与计算数学研究所;
【基金】：国家自然科学基金(11372051) 中国工程物理研究院院长基金(2014-1-042)资助项目
【分类号】：O35
，
本文编号：2478483
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