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Author:

Li, Z. (Li, Z..) | Zhang, X. (Zhang, X..) | Chen, J. (Chen, J..) | Bian, H. (Bian, H..) | Shi, L. (Shi, L..)

Indexed by:

Scopus PKU CSCD

Abstract:

A new multiobjective topology optimization method for compliant mechanisms with geometrical nonlinearity is presented. Geometrically nonlinear structural response is calculated using a Total-Lagrange finite element formulation and the equilibrium is found using an incremental scheme combined with Newton-Raphson iterations. The multiobjective topology optimization problem is established by the minimum compliance and maximum geometric advantage to design a mechanism which meets both stiffness and flexibility requirements, respectively. The weighted sum of conflicting objectives resulting from the norm method is used to generate the optimal compromise solutions, and the decision function is set to select the preferred solution. The solid isotropic material with penalization approach is used in design of compliant mechanisms. The sensitivities of the objective functions are found with the adjoint method and the optimization problem is solved using the method of moving asymptotes. These methods are further investigated and realized with the numerical examples, which are simulated to show the availability of this approach.

Keyword:

Compliant mechanism; Geometrical nonlinearity; Multiobjective topology optimization; Sensitivity analysis

Author Community:

  • [ 1 ] [Li, Z.]Engineering of Mechanical and Electrical Department, Beijing Polytechnic College, Beijing 100042, China
  • [ 2 ] [Zhang, X.]College of Mechanical Engineering, South China University of Technology, Guangzhou 510640, China
  • [ 3 ] [Chen, J.]Engineering of Mechanical and Electrical Department, Beijing Polytechnic College, Beijing 100042, China
  • [ 4 ] [Bian, H.]Engineering of Mechanical and Electrical Department, Beijing Polytechnic College, Beijing 100042, China
  • [ 5 ] [Shi, L.]Engineering of Mechanical and Electrical Department, Beijing Polytechnic College, Beijing 100042, China

Reprint Author's Address:

  • [Li, Z.]Engineering of Mechanical and Electrical Department, Beijing Polytechnic College, Beijing 100042, China

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Source :

Journal of Mechanical Strength

ISSN: 1001-9669

Year: 2011

Issue: 4

Volume: 33

Page: 548-553

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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