Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.compstruc.2012.11.008
Title: Effect of element sizes in random field finite element simulations of soil shear strength
Authors: Ching, J.
Phoon, K.-K. 
Keywords: Finite element analysis
Geotechnical engineering
Random field
Shear strength
Spatial variability
Issue Date: 2013
Source: Ching, J., Phoon, K.-K. (2013). Effect of element sizes in random field finite element simulations of soil shear strength. Computers and Structures 126 (1) : 120-134. ScholarBank@NUS Repository. https://doi.org/10.1016/j.compstruc.2012.11.008
Abstract: In random field finite element analysis (FEA), continuous random fields must be discretized, and the discretized solution is different from the continuous one. In this paper, it is found that the tolerable maximum element size to achieve acceptable accuracy for soil shear strength is surprisingly small. The discrepancy is governed by the line averaging effect along potential slip curves - the discrepancy is small if the line averaging is strong. Discretization based on element-level averaging (ELA) is always unconservative, giving mobilized shear strength always larger than the actual value, while discretization based on the midpoint method can be sometimes conservative. © 2012 Elsevier Ltd.
Source Title: Computers and Structures
URI: http://scholarbank.nus.edu.sg/handle/10635/59020
ISSN: 00457949
DOI: 10.1016/j.compstruc.2012.11.008
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