Optimal design and numerical studies of negative stiffness device–TMD …
2025年2月1日 · This study examines the combination of NSDs with tuned mass dampers (TMDs) and explores the NSD-TMD as a nonlinear energy sink (NES). The particle swarm optimization (PSO) algorithm was employed to determine the optimal …
Comparative Analysis of NES and TMD Performance via High
A comparative study between a tuned mass damper (TMD) and a nonlinear energy sink (NES), attached to a linear two-degree-of-freedom (DoF) mechanical system under impulsive excitation, is performed. The analysis involves different scenarios; namely, we consider the...
Performance evaluation of a nonlinear energy sink with quasi-zero ...
2023年5月1日 · The NES is superior to TMD when the excitation frequency is out of the operating range, whereas the TMD provides a better vibration-restraining effect within the range. In addition, a combination of linear and cubic nonlinear restoring force can potentially promote the performance of the NES device.
非线性能量阱(nonlinear energy sink,NES)技术是有别于传统质量调谐阻尼器(tuned mass damper,TMD)的附加子结构被动控制技术,其基本原理是通过设置具有强非线性刚度特性的附加子结构,使之对主结构的动力响应形成内共振俘获(internal resonance capture)来吸收和耗散主结构响应能量。 由于属被动控制,NES的构造复杂程度总体上与TMD相当,不需附设外部能源和监测反馈控制等系统,其相比主动、半主动控制的系统可靠性高,成本低。 由于其控制原理不再局限于调谐作 …
摘 要：提出了一种非线性能量阱(nes)与调谐质量阻尼器(tmd)混合控制结构振动的方案，结合复变量平均法 推得了慢变系统方程，并利用多尺度分析得到了理论能量预测方程。
Vibration mitigation of a nonlinear rotor system with linear and ...
2018年10月1日 · The obtained results showed, all three types of absorbers including TMD, NES, and combined TMD-NES sufficiently good performance in vibration reduction of primary rotor system. In a closer view, it shows that TMD-NES, TMD, and NES have respectively better performance in vibration reduction.
Performance comparison of nonlinear energy sink and linear
2015年5月1日 · To compare with the performance of NES, a linear tuned mass damper (TMD) is designed. The results show that the performance of NES is dependent on designed force amplitude. For lower amplitude, NES has a better performance than TMD, but for force amplitude greater than this designed force, TMD has a better performance.
轨道非线性吸能器结构振动控制动力特性研究,Engineering …
2024年1月1日 · 非线性吸能器 (nes) 已成为一种有前途的解决方案，可克服线性动态减振器（例如调谐质量阻尼器 (tmd)）的窄有效带宽。特别是，轨道 nes 越来越引起人们的关注，因为它们能够通过在弯曲轨道上移动附加质量来产生非线性恢复力。
采用不同轨道形状的轨道非线性能量阱减振鲁棒性分析
轨道非线性能量阱(Track Nonlinear Energy Sink,简称轨道NES)是一种具有较高频率鲁棒性的非线性质量阻尼器,但NES的非线性特点导致其减振性能对输入能量大小较敏感,为了改善其能量鲁棒性,分析考察了三层框架主体结构附加不同质量阻尼器时的响应,包括不同轨道形状的 ...
一种NES与TMD的混合控制方案研究 - cstam.org.cn
提出了一种非线性能量阱（NES）与调谐质量阻尼器（TMD）混合控制结构振动的方案，结合复变量平均法推得了慢变系统方程，并利用多尺度分析得到了理论能量预测方程。 能量方程表明混合系统中主结构与非线性能量阱的能量呈三次方关系，而与调谐质量阻尼器的能量为线性关系。 数值仿真表明混合系统中非线性能量阱可较快出现靶能量传递现象，而且整个系统具有较高的耗能效率；数值计算的能量分布曲线围绕理论能量预测曲线变动，证实了理论分析的正确性；混合系统 …