A self-adaptive boundary element method as implemented in the new computer program SHERPA is presented. Error indicators are obtained by comparing two BEM solutions obtained from exactly the same discretization but with (partly) different sets of collocation points. The code SHERPA has some advanced features, including fully automatic mesh refinement and user-friendly interfaces. h-hierarchical quadratic shape functions are employed to improve the computational efficiency. Numerical results for elastic problems are presented. Pointwise as well as global convergence is always reached in a few adaptive steps.
SELF-ADAPTIVE BOUNDARY ELEMENTS WITH H-HIERARCHICAL SHAPE FUNCTIONS
GUIGGIANI, MASSIMO;
1992-01-01
Abstract
A self-adaptive boundary element method as implemented in the new computer program SHERPA is presented. Error indicators are obtained by comparing two BEM solutions obtained from exactly the same discretization but with (partly) different sets of collocation points. The code SHERPA has some advanced features, including fully automatic mesh refinement and user-friendly interfaces. h-hierarchical quadratic shape functions are employed to improve the computational efficiency. Numerical results for elastic problems are presented. Pointwise as well as global convergence is always reached in a few adaptive steps.File in questo prodotto:
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