The Boundary Finite Element Method for the Efficient Computation of Orders and Modes of Three-Dimensional Stress Singularities |
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| Authors: | Markus Longeru Christian Mittelstedt Wilfried Becker |
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| Institution: | 1. Siegen University, Department of Mechanical Engineering, IMR, Paul-Bonatz-Str. 9-11, D-57068 Siegen, Germany;2. Darmstadt University of Technology, Department of Mechanics, Hochschulstr. 1, D-64289 Darmstadt, Germany |
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| Abstract: | In this contribution the B oundary F inite E lement M ethod (BFEM) is employed for the computation of the orders of stress singularities for several three-dimensional stress concentration problems in linear elastic fracture mechanics. The BFEM combines the advantages of both the FEM and the BEM: while only a discretization on a structural boundary is required, the actual surface mesh consists of standard displacement based finite elements. In contrast to the BEM, no fundamental solution is required. The BFEM is an ef.cient analysis tool which leads to highly accurate results with significantly lesser computational effort when compared to e.g. standard FEM procedures. (© 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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