基于多目标拓扑优化的复合低屈服点钢阻尼器减震性能分析

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (8) : 158-166.

论文

何浩祥1,2，王小兵1，张小福1

作者信息 +

Seismic performance of compound low yield point damper based on multi target topology optimization

HE Haoxiang1,2,WANG Xiaobing1,ZHANG Xiaofu1

Author information +

文章历史 +

摘要

鉴于传统低屈服点钢板阻尼器屈服点较高且不能调控的缺点，提出了由低屈服点钢板和普通钢板组合的复合低屈服点钢板阻尼器。提出包括边缘镂空、内部镂空和椭圆镂空等三种钢板阻尼器的新型镂空形式，并将“最大刚度”和“满应力状态”同时作为优化目标，通过交替优化方法对不同镂空形状进行拓扑优化，获得最优形状。对不同形式的复合钢板阻尼器进行有限元数值计算，计算结果表明内部优化模型阻尼器和边缘优化模型阻尼器初始刚度较大、滞回曲线饱满且无应力集中现象。对不同材料配比的两种优化模型阻尼器进行了数值模拟，验证本文提出的复合钢板阻尼器的屈服点具备可调性。对装有两种优化模型阻尼器的框架整体抗震减震能力进行了仿真分析，结果表明边缘优化模型阻尼器耗能能力更优越，适合应用。

Abstract

In view of the disadvantages of the traditional low yield point steel plate dampers with high yield point and inadequate adjustability, a compound low yield point steel plate damper was presented, and it is composed of low yield point steel plates and common steel plates. Three kinds of new hollow shape steel plate dampers were presented, which include boundary hollow, interior hollow, and ellipse hollow. The “maximum rigidity” and “full stress state” were used as the new optimization objectives. The topology optimization of different hollow shapes was performed by the alternating optimization method to obtain the optimal shape. Finite element calculation of different forms of compound steel plate damper was carried out. The results show that the initial stiffness of the boundary optimization damper and interior optimization damper is lager, the hysteresis curves are full and the stress is homogeneous. The numerical simulation of two kinds of optimization model dampers with different material ratios and different was carried out. The results show that the yield point of compound steel plate dampers can be regulated. The overall seismic capacity of the frame structure with these two kinds of optimization model dampers was simulated and analyzed. It is evident that the boundary optimization model damper has better energy dissipation capacity.

导出引用

何浩祥1,2，王小兵1，张小福1. 基于多目标拓扑优化的复合低屈服点钢阻尼器减震性能分析[J]. 振动与冲击, 2018, 37(8): 158-166

HE Haoxiang1,2,WANG Xiaobing1,ZHANG Xiaofu1. Seismic performance of compound low yield point damper based on multi target topology optimization[J]. Journal of Vibration and Shock, 2018, 37(8): 158-166

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