一种基于SAPSO-DE混合算法的结构非概率可靠性优化设计

Structural non-probabilistic reliability optimization design based on a SAPSO-DE hybrid algorithm

针对不确定性结构的非概率可靠性优化问题,提出一种基于模拟退火粒子群算法和差分进化算法(SAPSODE混合算法)的结构非概率可靠性优化设计方法。考虑结构非概率可靠性指标约束,建立最小化结构体积为目标的优化模型。为了提高结构非概率可靠性优化问题的计算精度和效率,采用基于认知经验进化的SAPSO-DE混合算法进行非概率可靠性优化设计。研究结果表明:基于SAPSO-DE混合算法的结构非概率可靠性优化设计方法克服了PSO算法的早熟现象,并提高了收敛速度和精度;该方法的全局搜索能力强,且具有较强的稳定性。

In order to solve the non-probabilistic reliability optimization problems of the uncertain structure, a structural non-probabilistic reliability optimal design method based on the hybrid algorithm of the simulated annealing-particle swarm optimization algorithm and the differential evolution algorithm（SAPSO-DE hybrid algorithm） was proposed.Considering the constraints of the structural non-probabilistic reliability index, the optimization model was established to minimize the structural volume. In order to improve the computational accuracy and efficiency of the structural non-probabilistic reliability, a non-probabilistic reliability optimization design was carried out based on the SAPSO-DE hybrid algorithm of the cognitive experience evolution. The results show that the non-probabilistic reliability optimization design method of structure based on the SAPSO-DE hybrid algorithm overcomes the premature phenomenon of the PSO algorithm and improves the convergence speed and precision, and the global search ability of this method is strong and has strong stability.