Model of Sphere-to-Edge Contact for Spherical Discontinuous Deformation Analysis
Model of Sphere-to-Edge Contact for Spherical Discontinuous Deformation Analysis
复制标题
用于球面不连续变形分析的球边接触模型
DOI：
10.1061/(asce)gm.1943-5622.0001021
复制
发表时间：
2017
影响因子：
3.7
通讯作者：
Zhao Qiang
中科院分区：
文献类型：
--
作者：
Wang Long;Jiao Yu-Yong;Huang Gang-Hai;Zheng Fei;Zhao Qiang
基于球单元的非连续变形分析（SDDA）通常使用简单的接触类型，如球-球和球-平面接触进行检测。然而，在实际的工程模拟中，也发现球与固定边界之间的相互作用的上下文中的球边缘接触。这种接触类型的不完整性在原来的SDDA限制了其应用的问题，涉及复杂的边界形状。为了填补这一空白，本文提出了一个球边接触模型，SDDA的应用程序扩展到复杂的边界形状，如边缘，角落，有限和无限的平面。推导了接触方程，并在自行开发的SDDA源程序中实现了算法。四个数值例子进行了模拟验证。结果表明，该模型是正确有效的。
Spherical element-based discontinuous deformation analysis (SDDA) usually uses simple types of contact such as sphere–sphere and sphere–plane contact for detection. However, in practical engineering simulations, there is also found sphere–edge contact in the context of interactions between spheres and fixed boundaries. This incompleteness of contact types in the original SDDA restricts its application to problems involving complex boundary shapes. To fill this gap, this paper presents a sphere–edge contact model to extend the application of SDDA to complex boundary shapes such as edges, corners, and finite and infinite planes. The contact formulation is deduced and the algorithm is implemented in SDDA source code developed by the authors. Four numerical examples are simulated for verification. The results show that the proposed model is correct and effective.