Structural Engineering and Mechanics

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Exact integration for the hypersingular boundary integral equation of two-dimensional elastostatics

  • Zhang, Xiaosong (Department of Engineering Mechanics, Shijiazhuang Railway Institute) ;
  • Zhang, Xiaoxian (Department of Engineering, The University of Liverpool)
  • Received : 2007.01.02
  • Accepted : 2008.08.11
  • Published : 2008.10.20
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Abstract

This paper presents an exact integration for the hypersingular boundary integral equation of two-dimensional elastostatics. The boundary is discretized by straight segments and the physical variables are approximated by discontinuous quadratic elements. The integral for the hypersingular boundary integral equation analysis is given in a closed form. It is proven that using the exact integration for discontinuous boundary element, the singular integral in the Cauchy Principal Value and the hypersingular integral in the Hadamard Finite Part can be obtained straightforward without special treatment. Two numerical examples are implemented to verify the correctness of the derived exact integration.

Keywords

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