Structure Optimization of Holding Poles Based on the Improved Sine Cosine Algorithm
杨小猛 1李亮 2胡雄飞 3周焕林1
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作者信息
1. 合肥工业大学 土木与水利工程学院,合肥 230009
2. 国网安徽省电力有限公司建设分公司,合肥 230071
3. 国网安徽省电力有限公司安庆供电公司,安徽 安庆 246001
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摘要
抱杆是组立输电铁塔的特种起重设备.以最小质量为优化目标,杆件的截面尺寸、辅材连接方式以及摇臂节点坐标为优化变量,许用应力、位移和屈曲系数为约束条件,建立抱杆优化设计模型.提出一种改进的正余弦算法(improved sine cosine algorithm,ISCA),开展抱杆尺寸、形状和拓扑优化.引入Lévy飞行增强算法全局搜索能力,采用精英引导策略增强算法局部搜索能力,使用贪婪选择策略更新最优解.算例表明ISCA能够有效求解空间桁架结构的优化设计问题.
Abstract
The holding pole is a special lifting device for the construction of transmission towers.The optimiza-tion design model for the holding pole was established.The minimum mass was set as the optimization objec-tive.The cross-section sizes of members,the connection modes of auxiliary members and the coordinates of the rocker joint were set as the optimization variables.The allowable stress,displacement and buckling coeffi-cient were taken as the constraining conditions.An improved sine cosine algorithm(ISCA)was proposed to carry out the size,shape and topology optimization designs of the holding pole.For the ISCA,the Lévy flight was introduced to enhance the global search ability,elite guidance strategy was applied to enhance the local search ability,and the greedy selection strategy was used to update the optimal solution.The example shows that,the ISCA can effectively solve the optimization design problems of spatial truss structures.
关键词
正余弦算法/抱杆/桁架结构/结构优化/有限元分析
Key words
sine cosine algorithm/holding pole/truss structure/structure optimization/finite element analysis
维普
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