Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
767690 | Engineering Fracture Mechanics | 2011 | 14 Pages |
Abstract
This paper presents a novel numerical method for effectively simulating the singular stress field for mode-I fracture problems based on the edge-based smoothed finite element method (ES-FEM). Using the unique feature of the ES-FEM formulation, we need only the assumed displacement values (not the derivatives) on the boundary of the smoothing domains, and hence a new technique to construct singular shape functions is devised for the crack tip elements. Some examples have demonstrated that results of the present singular ES-FEM in terms of strain energy, displacement and J-integral are much more accurate than the finite element method using the same mesh.
Keywords
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Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
G.R. Liu, N. Nourbakhshnia, Y.W. Zhang,