Minimum influence point method to construct fictitious frame domain for treating nonmatching interface meshes

作者：Jeong Gil Eon; Youn Sung Kie^*; Park K C

来源：Journal of Mechanical Science and Technology, 2018, 32(3): 1253-1260.

DOI：10.1007/s12206-018-0229-2

• Domain decomposition
• Nonmatching interface mesh
• Mortar method
• Localized Lagrange multipliers

A proper imposition of interface compatibility condition is important for issues in interface coupling, especially when the interface contains nonmatching meshes. For precise handling of interface coupling, a localized mortar method is widely used by introducing a fictitious frame domain to impose interface constraint. The performance of the method depends on the allocation of nodes along the frame. In this study, a new method of allocating the frame nodes for effective and accurate treatment of nonmatching interface meshes is introduced. A key feature of the proposed method is that the frame nodes are allocated by finding the minimum influence points between two adjoined subdomains through a linear interpolation of interface nodes. The characteristics of the proposed method are illustrated through several numerical examples.

• 出版日期2018-3