An effective boundary method for the analysis of elastoplastic problems |
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Authors: | Hu Ning |
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Institution: | Department of Engineering Mechanics of Chongqing University, Chongqing |
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Abstract: | In this paper, a series of effective formulae of the boundary element method is presented. In these formulae, by using a new variable, two kernels are only of the weaker singularity of Lnr (where r is the distance between a source point and a field point). Hence, the singularities in the conventional displacement formulation and stress formulation at internal points are reduced respectively so that the "boundary-layer' effect which strongly degenerates the accuracy of stress calculation by using original formulae is eliminated. Also the direct evaluation of coefficients C (boundary tensor), which are difficult to calculate, is avoided. This method is used in elastoplastic analysis. The results of the numerical investigation demonstrate the potential advantages of this method. |
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Keywords: | boundary element method elastoplastic problem numerical solution |
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