Parametric quadratic programming method for elastic contact fracture analysis |
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| Authors: | RKL Su Y Zhu AYT Leung |
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| Affiliation: | (1) Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R.China Fax;(2) Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R.China;(3) Department of Building and Construction, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, P.R.China |
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| Abstract: | A solution procedure for elastic contact fracture mechanics has been proposed in this paper. The procedure is based on the quadratic programming and finite element method (FEM). In this paper, parametric quadratic programming method for two-dimensional contact mechanics analysis is applied to the crack problems involving the crack surfaces in frictional contact. Based on a linear complementary contact condition, the parametric variational principle and FEM, a linear complementary method is extended to analyze contact fracture mechanics. The near-tip fields are properly modeled in the analysis using special crack tip elements with quarter-point nodes. Stress intensity factor solutions are presented for some frictional contact fracture problems and are compared with known results where available. |
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| Keywords: | Quadratic programming frictional contact stress intensity factors finite element method |
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