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A Finite Volume Meshless Local Petrov-Galerkin Method for Topology Optimization Design of the Continuum Structures

Juan Zheng1,2,3, Shuyao Long1,2, Yuanbo Xiong1,2, Guangyao Li1
State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha, China
College of Mechanics and Aerospace Engineering, Hunan University, Changsha, China
Corresponding author. Tel.: +86-0731-8824724. E-mail: dingdang8209@163.com

Computer Modeling in Engineering & Sciences 2009, 42(1), 19-34. https://doi.org/10.3970/cmes.2009.042.019

Abstract

In this paper, the finite volume meshless local Petrov-Galerkin method (FVMLPG) is applied to carry out a topology optimization design for the continuum structures. In FVMLPG method, the finite volume method is combined with the meshless local Petrov-Galekin method, and both strains as well as displacements are independently interpolated, at randomly distributed points in a local domain, using the moving least squares (MLS) approximation. The nodal values of strains are expressed in terms of the independently interpolated nodal values of displacements, by simple enforcing the strain-displacement relationships directly. Considering the relative density of nodes as design variable, and the minimization of compliance as objective function, the mathematical formulation of the topology optimization design is developed using the solid isotropic microstructures with penalization (SIMP) interpolation scheme. The topology optimization problem is solved by the optimality criteria method. Numerical examples show that the proposed approach is feasible and efficient for the topology optimization design of the continuum structures.

Keywords

finite volume meshless local Petrov-Galerkin method (FVMLPG), moving least squares (MLS), topology optimization design for continuum structures, SIMP, optimality criteria method

Cite This Article

Zheng, J., Long, S., Xiong, Y., Li, G. (2009). A Finite Volume Meshless Local Petrov-Galerkin Method for Topology Optimization Design of the Continuum Structures. CMES-Computer Modeling in Engineering & Sciences, 42(1), 19–34.



This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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