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| BEM Analysis of Transient Response in Surface Crack Problems |
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| DOI：10.7511/jslx19931003 |
| KeyWord:boundary element method, Laplace transform, surface crack, stress intensity factor, transient response |
| Zhang Yongyuan Shi Wei |
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| Abstract: |
| In this paper, the Laplace transformed boundary element method is used to analyse the transient responses of surface crack. The choice of Laplace inversion parameters and the calculation of dynamic SIF are discussed here in special. To verify the computation procedure and choose the discretization format, the transient displacement response of a prismatical beam under p(t) = p0H(t) loading and the transient SIF response of a thick plate with a through-thickness crack under two different discretization schemes are calculated. Finally, the transient SIF response of a plate with a semi-circular surface crack under several different loading conditions has also computed, and the results are shown to be quite good. |
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