基于改进正余弦算法的抱杆结构优化

杨小猛; 李亮; 胡雄飞; 周焕林

doi:10.21656/1000-0887.440354

基于改进正余弦算法的抱杆结构优化

doi: 10.21656/1000-0887.440354

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

(我刊编委周焕林来稿)

基金项目:

国家自然科学基金 11972143

详细信息

作者简介:
杨小猛(1995—)，男，硕士(E-mail: Yxiaomeng123@outlook.com)

通讯作者:
周焕林(1973—)，男，教授，博士，博士生导师(通讯作者. E-mail: zhouhl@hfut.edu.cn)

中图分类号: TU318
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- 文章访问数: 205
- HTML全文浏览量: 86
- PDF下载量: 51
- 被引次数: 0
出版历程
- 收稿日期: 2023-12-14
- 修回日期: 2024-01-23
- 刊出日期: 2024-05-01

Structure Optimization of Holding Poles Based on the Improved Sine Cosine Algorithm

1.
College of Civil Engineering, Hefei University of Technology, Hefei 230009, P.R.China
2.
State Grid Anhui Electric Power Co., Ltd. Construction Branch, Hefei 230071, P.R.China
3.
State Grid Anhui Electric Power Co., Ltd. Anqing Electric Power Supply Company, Anqing, Anhui 246001, P.R.China

(Contributed by ZHOU Huanlin, M. AMM Editorial Board)

摘要

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.
- 正余弦算法 /
- 抱杆 /
- 桁架结构 /
- 结构优化 /
- 有限元分析
Abstract: The holding pole is a special lifting device for the construction of transmission towers. The optimization design model for the holding pole was established. The minimum mass was set as the optimization objective. 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 coefficient 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.
- sine cosine algorithm /
- holding pole /
- truss structure /
- structure optimization /
- finite element analysis
edited-by

edited-by
注释:

1) (我刊编委周焕林来稿)

HTML全文

图 1 抱杆整体示意图

Figure 1. Overall diagram of the holding pole

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图 2 摇臂方位和风载荷方向

Figure 2. Rocker arm orientations and wind load directions

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图 3 ISCA优化流程图

Figure 3. The ISCA optimization flowchart

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图 4 摇臂节点移动模型

Figure 4. The rocker arm node movement model

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图 5 标准节排布形式

Figure 5. The standard section arrangement

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图 6 优化收敛曲线

Figure 6. Optimization convergence curves

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图 7 应力对比

Figure 7. Stress comparison

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图 8 最大顶端位移对比

Figure 8. Comparison of maximum displacements

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图 9 屈曲系数对比

Figure 9. Comparison of buckling coefficients

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表 1 抱杆各段角钢型号

Table 1. The angle steel model for each part of the holding pole

	main part	auxiliary part
ordinary	∟80×6	∟63×5
reinforcement	∟90×8	∟63×5
mast	∟90×8	∟60×6
rocker	∟65×6	∟50×6
mass	13.64 t

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表 2 载荷工况

Table 2. Load cases

load case		lifted weight	wind direction	rocker orientation
max unbalance loading	case 1	4 t, 3 t	0°	45°
	case 2	4 t, 3 t	45°	45°
	case 3	4 t, 3 t	90°	45°
high wind	case 4	-	0°	45°
	case 5	-	45°	45°
	case 6	-	90°	45°

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表 3 各工况分析结果

Table 3. Analysis results of each working condition

load case		max Mises stress σ_m/MPa		top displacement u_t/mm	buckling coefficient
load case		main part	auxiliary part	top displacement u_t/mm	buckling coefficient
working	case 1	166.53	76.47	259.82	4.01
	case 2	169.19	84.48	268.47	3.93
	case 3	168.41	75.15	248.93	4.00
high wind	case 4	173.19	58.42	243.36	3.80
	case 5	181.43	47.94	252.56	3.62
	case 6	180.58	44.54	244.19	3.57

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表 4 优化结果

Table 4. Optimization results

algorithm	A₁	A₂	A₃	A₄	A₅	A₆	A₇	A₈	y₁	y₅	T₁	T₂	T₃	T₄	mass W/t
ISCA	∟70×6	∟45×3	∟80×7	∟45×3	∟75×7	∟45×3	∟45×5	∟45×4	80	-150	5	3	4	2	10.44
SCA	∟70×6	∟45×3	∟90×8	∟45×4	∟75×8	∟50×6	∟50×6	∟50×5	90	-50	2	1	3	1	11.18

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