Dynamic analysis with flat-top partition of unity-based discontinuous deformation analysis

• Main Authors: Liu, Xiaoying, Zhao, Zhiye
• Other Authors: School of Civil and Environmental Engineering
• Format: Article
• Language: English
• Published: 2019
• Subjects: Discontinuous Deformation Analysis; DRNTU::Engineering::Civil engineering; Flat-top Partition Of Unity
• Online Access: https://hdl.handle.net/10356/90248; http://hdl.handle.net/10220/48468
• Institution: Nanyang Technological University

The flat-top partition of unity method can obtain a stiffness matrix with a small condition number and avoid the linear dependence problem. We aimed to extend the flat-top partition of unity method to rock dynamic analyses to simulate the influence of discontinuity and dynamic loading. Therefore, the flat-top partition of unity method was coupled with the discontinuous deformation analysis. In this paper, after the presentation of the mesh construction, the inertia force and contact algorithm for flat-top partition of unity-based discontinuous deformation analysis, several numerical examples are presented to verify the accuracy and efficiency of the method.