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A coupled BEM/scaled boundary FEM formulation for accurate computations in linear elastic fracture mechanics.

机译:耦合的BEM /比例边界FEM公式可用于线性弹性断裂力学中的精确计算。

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摘要

Issues relating to the practical implementation of the coupled boundary element–scaled boundary finite element method are addressed in this paper. A detailed approach highlights fully the process of applying boundary conditions, including the treatment of examples in which the assumptions made in previous work are no longer valid. Verification of the method is undertaken by means of estimating stress intensity factors and comparing them against analytical solutions. The coupled algorithm shows good convergence properties. Issues relating to traction scaling, the use of discontinuous boundary elements, and the greater versatility of the coupled method over its constituent methods are highlighted.
机译:本文讨论了与耦合边界元-标度边界有限元法的实际实现有关的问题。详细的方法充分强调了应用边界条件的过程,包括对以前工作中的假设不再有效的示例的处理。该方法的验证是通过估算应力强度因子并将其与分析解决方案进行比较来进行的。耦合算法具有良好的收敛性。突出了与牵引力缩放,不连续边界元素的使用以及耦合方法相对于其组成方法的更大通用性有关的问题。

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