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Structural Engineering and Mechanics Volume 29, Number 2, May30 2008 , pages 117-134 DOI: https://doi.org/10.12989/sem.2008.29.2.117 |
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Dynamic analysis of 3-D structures with adaptivity in RBF of dual reciprocity BEM |
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S.H. Razaee and A. Noorzad
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| Abstract | ||
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A new adaptive dual reciprocity boundary element method for dynamic analysis of 3-D structures is presented in this paper .It is based on finding the best approximation function of a radial basis function (RBF) group which minimize the error of displacement field expansion. Also, the effects of some parameters such as the existence of internal points, number of RBF functions and position of collocation nodes in discontinuous elements are investigated in this adaptive procedure. Three numerical examples show improvement in dynamic response of structures with adaptive RBF in dual reciprocity with respect to ordinary BEM. | ||
| Key Words | ||
| Adaptive Dual Reciprocity; Boundary Element; Radial Basis Functions (RBF); natural frequencies; collocation node. | ||
| Address | ||
| S.H. Razaee and A. Noorzad: Dept. of Civil Engineering, Engineering Faculty, Tehran University, Tehran, Iran | ||