Structural Engineering and Mechanics

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Numerical stability and parameters study of an improved bi-directional evolutionary structural optimization method

  • Huang, X. (School of Civil and Chemical Engineering, RMIT University) ;
  • Xie, Y.M. (School of Civil and Chemical Engineering, RMIT University)
  • Received : 2006.05.10
  • Accepted : 2007.04.03
  • Published : 2007.09.10
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Abstract

This paper presents a modified and improved bi-directional evolutionary structural optimization (BESO) method for topology optimization. A sensitivity filter which has been used in other optimization methods is introduced into BESO so that the design solutions become mesh-independent. To improve the convergence of the optimization process, the sensitivity number considers its historical information. Numerical examples show the effectiveness of the modified BESO method in obtaining convergent and mesh-independent solutions. A study of the effects of various BESO parameters on the solution is then conducted to determine the appropriate values for these parameters.

Keywords

References

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