摘要
提出适宜的适应度函数,将遗传算法的种群思想引入模拟退火算法中,构造出遗传算法与模拟退火算法的组合算法,用于空间结构振动抑制的阻尼器位置和数量寻优。通过空间网壳在不同冲击荷载作用下的算例分析发现,若设置合适的控制参数,运用组合算法可迅速准确地找到全局最优解方案。
An improved simulated annealing algorithm integrated with the idea from genetic algorithm as well as the adapting function is presented as a mixed algorithm for optimization of damper quantity and placement in vibration reduction of spatial reticulated structures. A typical reticulated shell structure under impact loading is taken as an example to demonstrate the advantages of the mixed algorithm with proper parameters. The study can provide an effective method of proper placement and reasonable quantity of energy absorbing dampers for vibration reduction of spatial reticulated structures.
基金
高等学校博士学科点专项科研基金项目(20040248002)
国家自然科学基金项目(10572091)
关键词
工程结构
阻尼器优化布置
模拟退火算法
遗传算法
大跨空间结构
振动抑制
engineering structure
optimization placement of damper
simulated annealing algorithm
genetic algorithm
spatial reticulated structure
vibration reduction
