Hits:

Indexed by:期刊论文

Date of Publication:2013-06-01

Journal:SOIL DYNAMICS AND EARTHQUAKE ENGINEERING

Included Journals:SCIE、EI

Volume:49

Page Number:109-121

ISSN No.:0267-7261

Abstract:The finite element method is widely employed in numerical analysis of seismic liquefaction at present. However, due to the mesh distortion in strong dynamic action, the results are generally inaccurate and can even stop the calculation. Therefore, an adaptive mesh refinement (AMR) scheme is introduced to improve the numerical results based on a finite element and finite difference coupled dynamic method (FEM-FDM). The changing law about the errors due to the linear and the bilinear recovered fields of coarse meshes, AMR meshes and fine meshes is discussed. The seismic response on soil is compared between different AMR meshes. The AMR strategy can better simulate seismic liquefaction and offer more accurate results than the normal finite element simulation. (C) 2013 Elsevier Ltd. All rights reserved.