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Two-dimensional fracture analysis of piezoelectric material based on the scaled boundary node method

陈莘莘  王娟  李庆华  
【摘要】:A scaled boundary node method(SBNM) is developed for two-dimensional fracture analysis of piezoelectric material,which allows the stress and electric displacement intensity factors to be calculated directly and accurately. As a boundarytype meshless method, the SBNM employs the moving Kriging(MK) interpolation technique to an approximate unknown field in the circumferential direction and therefore only a set of scattered nodes are required to discretize the boundary. As the shape functions satisfy Kronecker delta property, no special techniques are required to impose the essential boundary conditions. In the radial direction, the SBNM seeks analytical solutions by making use of analytical techniques available to solve ordinary differential equations. Numerical examples are investigated and satisfactory solutions are obtained, which validates the accuracy and simplicity of the proposed approach.

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