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Acta Armamentarii ›› 2017, Vol. 38 ›› Issue (12): 2438-2446.doi: 10.3969/j.issn.1000-1093.2017.12.018

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Structural Durability Optimization Design Method Based on Improved Cuckoo Search Algorithm

LIU Qin1,2, SUN Zhi-li2, LIU Ying1, GUO Zhi-ming1, CHEN Yan1   

  1. (1.Ordnance Science and Research Academy of China, Beijing 100089, China; 2.School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, Liaoning,China)
  • Received:2017-03-23 Revised:2017-03-23 Online:2018-02-01

Abstract: A structural durability optimization design method is studied by combining durability analysis with the cuckoo search algorithm. The durability optimization models with reliable life as object or constraint are developed. In order to solve the strong non-linear function and multi-extreme value problem for complex structural durability, an improved cuckoo search algorithm for structural durability optimization is proposed by introducing a new type of swarm intelligence algorithm. The convergence and efficiency of the cuckoo search algorithm are improved in terms of migration strategy, convergence criterion, and constraint handling. A steady improved cuckoo search algorithm for durability based optimization is proposed by using the probability optimization strategy that is to solve the reliable-life object by double-loop performance measure approach and process the reliable-life constraint by single-loop performance measure approach. The proposed algorithm can be used for global optimization. The proposed method is demonstrated with a gear box for light-weight vehicle. The results validate the effectiveness of the proposed method, and the weight of gear box can be lightened while meeting the durability constraint. Key

Key words: ordnancescienceandtechnology, durabilityoptimizationdesign, reliablelife, cuckoosearchalgorithm, performancemeasureapproach

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