个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:水利工程系
电子邮箱:kongxj@dlut.edu.cn
A coupled meshless-SBFEM-FEM approach in simulating soil-structure interaction with cross-scale model
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论文类型:期刊论文
发表时间:2021-02-02
发表刊物:SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
卷号:136
ISSN号:0267-7261
关键字:Multilevel cross-scale model; Meshless interface; Meshless-SBFEM-FEM; Soil-structure interaction; Metro structure
摘要:This paper presents an integrated, customized routine that uses object-oriented programming and a "super element class" to apply an integrated approach to simulate soil-structure interaction (SSI) problems. The scaled boundary finite element method (SBFEM) and finite element method (FEM) are applied together with the quad tree technique to implement cross-scale modeling for solid elements. Meanwhile, the meshless interface seamlessly connects mismatched and differing sizes of meshes between the soil and the structure, thus allowing cross-scale modeling at the interface level. In addition, through modify the radial point interpolation function (RPIM) and the method of searching supporting nodes, the precision near the boundaries of meshless interface are improved, and circular (cambered) type interfaces can be simulated. Thus, through a coupled Meshless-SBFEM-FEM approach, a fine analysis of soil-structure interaction problem with multilevel cross-scale model can be conducted.