Coupled Moving Particle Simulation-Finite-Element Method Analysis of Fluid-Structure Interaction in Geodisasters

被引:28
作者
Zhu, Chongqiang [1 ]
Chen, Zhiyi [1 ]
Huang, Yu [1 ]
机构
[1] Tongji Univ, Coll Civil Engn, Dept Geotech Engn, Shanghai 200092, Peoples R China
基金
中国国家自然科学基金; 中国博士后科学基金;
关键词
Geodisasters; Interaction; Hybrid method; Moving particle simulation; Finite-element method; LARGE-DEFORMATION ANALYSIS; MATERIAL POINT METHOD; DEBRIS FLOW IMPACT; GRANULAR FLOW; SPH MODEL; LANDSLIDE; BOUNDARY; FAILURE; SLIDES; PFEM;
D O I
10.1061/(ASCE)GM.1943-5622.0002041
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
Geodisasters associated with fluidized geomaterials, such as flow-like landslides, flow slides, and debris flows, pose a tremendous threat to communities and the environment. Protective structural measures are therefore important for disaster prevention and mitigation. However, the development of a numerical method to study fluid-structure interaction (FSI) remains a challenge. A coupled method is proposed using moving particle simulation (MPS) to simulate the large deformation of fluidized geomaterials and a finite-element method (FEM) to model the dynamic behavior of structures. A new boundary condition based on the Shepard filter method is developed for MPS to improve its efficiency. An interaction model with weak coupling schemes is used to effectively communicate information and coordinate the different time steps between the MPS and FEM approaches. The effectiveness and accuracy of the hybrid numerical method for FSI are verified and validated using a series of benchmark problems.
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页数:11
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