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Title: Analysis of elastic-plastic problems using edge-based smoothed finite element method
Authors: Cui, X.Y.
Liu, G.R. 
Li, G.Y.
Zhang, G.Y.
Sun, G.Y.
Keywords: Elastic-plastic analysis
Meshfree methods
Numerical methods
Issue Date: Oct-2009
Citation: Cui, X.Y., Liu, G.R., Li, G.Y., Zhang, G.Y., Sun, G.Y. (2009-10). Analysis of elastic-plastic problems using edge-based smoothed finite element method. International Journal of Pressure Vessels and Piping 86 (10) : 711-718. ScholarBank@NUS Repository.
Abstract: In this paper, an edge-based smoothed finite element method (ES-FEM) is formulated for stress field determination of elastic-plastic problems using triangular meshes, in which smoothing domains associated with the edges of the triangles are used for smoothing operations to improve the accuracy and the convergence rate of the method. The smoothed Galerkin weak form is adopted to obtain the discretized system equations, and the numerical integration becomes a simple summation over the edge-based smoothing domains. The pseudo-elastic method is employed for the determination of stress field and Hencky's total deformation theory is used to define effective elastic material parameters, which are treated as field variables and considered as functions of the final state of stress fields. The effective elastic material parameters are then obtained in an iterative manner based on the strain controlled projection method from the uniaxial material curve. Some numerical examples are investigated and excellent results have been obtained demonstrating the effectivity of the present method. © 2008.
Source Title: International Journal of Pressure Vessels and Piping
ISSN: 03080161
DOI: 10.1016/j.ijpvp.2008.12.004
Appears in Collections:Staff Publications

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