调谐质量阻尼器和轨道型非线性能量阱减震性能对比研究
Comparison study of damping performance between tuned mass damper and track nonlinear energy sink
吴春雷 1黄欣 1鲍天正 1张国军1
作者信息
- 1. 上海师范大学建筑工程学院,上海 201418
- 折叠
摘要
基于2层钢框架模型,通过试验对比了在地震作用下调谐质量阻尼器(TMD)和非线性能量阱(NES)的减震性能,分析了两者时(频)域曲线和减震效果的差异,探究了影响两者减震效果的因素.试验结果表明:对于处在低阶模态的结构,TMD的减震效果更好,减小加速度响应最多可达42.5％;轨道型非线性能量阱因轨道摩擦系数不同减震效果有差异,减小加速度响应最多可达24.7％,但傅里叶幅值略有降低,高阶模态下减震效果将更好.
Abstract
Based on a 2-story steel frame model,the damping performance of tuned mass damper(TMD)and nonlinear energy sink(NES)under the seismic action was compared in shaking-table tests.Meanwhile,the differences in their time(frequency)domain curves as well as damping effects were analyzed.The factors affecting the damping performance were explored.The test results showed that for structures in low-order mode,TMD had a better damping effect with reducing the acceleration response by up to 42.5％;while track NES due to track friction different coefficients had different damping effects,and the acceleration response could be reduced by up to 24.7％.However,the Fourier amplitude was slightly reduced,which had the potential for better damping effects in high-order mode.
关键词
调谐质量阻尼器(TMD)/轨道型非线性能量阱(NES)/结构响应/振动台试验Key words
tuned mass damper(TMD)/track nonlinear energy sink(NES)/structural response/shaking-table test引用本文复制引用
出版年
2024
NETL
NSTL
万方数据