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- W2364751912 abstract "A numerical method is presented for obtaining the stress intensity factors of cracks terminating at a bimaterial interface based on extended finite element method(XFEM). A new 6-term crack tip displacement enrichment function is derived. Based on the analytical solution of the stress and displacement fields around the crack tip, the expression of the path independent integral Jkeand the stress intensity factors KIand KII, is established. The XFEM numerical solution is used to calculate the integral Jke, and the stress intensity factors are obtained by using the above expression. Finally, the maximum circumferential stress criterion is used to request the crack propagation angle θp. Results of the numerical simulations show that propagation problems of vertical crack at the bimaterial interface can be solved efficiently by the combination of the integral Jkemethod and the XFEM. The crack propagation angle θpis smaller when the crack propagates from a softer material into a harder material, but θpis larger when the crack propagates from a harder material into a softer material. In the case of the four-point bending test, the crack propagation angle θpis independent of the ratio of the Poisson's ratios(v1/v2) of materials on both sides of the interface, but θpand the logarithm of the ratio of elasticity modulus lg(E1/E2) meet an exponential relation." @default.
- W2364751912 created "2016-06-24" @default.
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- W2364751912 date "2014-01-01" @default.
- W2364751912 modified "2023-09-25" @default.
- W2364751912 title "Crack Propagation Terminating at a Bimaterial Interface Studied Using Extended Finite Element Method" @default.
- W2364751912 hasPublicationYear "2014" @default.
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