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Structural Engineering and Mechanics Volume 27, Number 1, September10 2007 , pages 49-61 DOI: https://doi.org/10.12989/sem.2007.27.1.049 |
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Numerical stability and parameters study of an improved bi-directional evolutionary structural optimization method |
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X. Huang and Y. M. Xie
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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. | ||
| Key Words | ||
| bi-directional evolutionary structural optimization (BESO); numerical stability; mesh-independency; parameters study.ore; SPM; random sea; reliability; fatigue; compliant. | ||
| Address | ||
| X. Huang and Y. M. Xie: School of Civil and Chemical Engineering, RMIT University, GPO Box 2476V, Melbourne 3001, Australia | ||