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

作　　者：吴春雷 黄欣 鲍天正 张国军[1] WU Chunlei;HUANG Xin;BAO Tianzheng;ZHANG Guojun(School of Civil Engineering,Shanghai Normal University,Shanghai 201418,China)

机构地区：[1]上海师范大学建筑工程学院,上海201418

出　　处：《上海师范大学学报（自然科学版中英文）》2024年第3期438-445,共8页Journal of Shanghai Normal University(Natural Sciences)

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.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 

分 类 号：TU352.11[建筑科学—结构工程] TU317.1