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| The calculation of stress intensity factor including the effects of surface tractions |
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| DOI：10.7511/jslx20085119 |
| KeyWord:fracture mechanics,stress intensity factor,surface tractions,scaled boundary finite element,orthotropic materials |
| LIU Jun-yu LIN Gao FAN Shu-li DU Jian-guo HU Zhi-qiang |
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| Abstract: |
| The stress intensity factor of the crack tip is calculated based on the scaled boundary element method(SBFEM) considering the surface tractions.The semi-analytical solving process of the scaled boundary element equations with the contribution of surface tractions is presented.Integrals in the radial direction arise which can be evaluated explicitly for the surface tractions varying as power functions in the radial coordinate and no additional approximations are introduced.The comparison with the analytical solution and numerical examples show that SBFEM is effective and possesses high accuracy for the calculation of stress intensity factor with the contribution of surface tractions.In addition,it is easily to treat the anisotropic materials for the method.The results of single-edge-cracked orthotropic material problem with uniform surface tractions are provided. |