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Topology optimization with meshless density variable approximations and BESO method
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DOI：10.1016/j.cad.2014.06.003.png)
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Abstract
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An improved meshless density variable approximation is incorporated into the BESO method for topology optimization of continuum structures in this paper. The essential boundary condition is enforced by using the compactly supported radial basis function (CSRBF). The Shepard function is used to create a physically meaningful dual-level density approximation. Numerical examples show that the proposed method is feasible and fidelity for the topology optimization of continuum structures. The common numerical instabilities of the BESO method do not exist in the final results. (C) 2014 Elsevier Ltd. All rights reserved.
Keywords:
Topology optimization
Nodal density variables
BESO method
Shepard function
Numerical instabilities
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