APPLICATION OF PML TO NON-LINEAR SOIL-STRUCTURE PROBLEM
Soil-structure interaction has significant effect on the earthquake performance of a structure. Finite element method is adopted,usually,in the analytical examination of performances of structures,and it is. usually,necessary to express wave radiation into infinity using appropriate boundary. It is well known that PML absorbs radiating wave very well,when foundation soil can be regarded as linear elastic in PML. However,nonlinear phenomenon will occur in extensive soil in case of severe earthquake. In this paper,the extension of PML to nonlinear problem is described. Mohr-Coulomb yielding criteria,and Drucker-Prager type plastic potential were adopted for elasto-plastic constitutive equation. Time domain convolutional PML formulation consistent with FEM is derived for elastic-plastic problem. For elastic problem,symmetric dynamic stiffness matrix was derived for convolutional PML. The effectiveness of the proposed PML is demonstrated by numerical examples.
Soil-structure interaction Convolutional PML Elasto-plasticity Finite element method
Perhat Laheman Hiroo Shiojiri
Graduate school of College of Science and Technology,Nihon University,1-8 Kanda Surugadai,Tokyo,Japa College of Science and Technology,Nihon University,1-8 Kanda Surugadai,Tokyo,Japan
国际会议
The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)
广州
英文
947-952
2010-12-01（万方平台首次上网日期，不代表论文的发表时间）