On the characteristics of an ultra-low frequency nonlinear isolator using sliding beam as negative stiffness
On the characteristics of an ultra-low frequency nonlinear isolator using sliding beam as negative stiffness
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滑动梁负刚度超低频非线性隔振器特性研究
DOI：
10.1007/s12206-013-1205-5
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发表时间：
2014-03
影响因子：
1.6
通讯作者：
Hua Hongxing
中科院分区：
文献类型：
--
作者：
Huang Xiuchang;Liu Xingtian;Hua Hongxing
提出了一种新型结构的超低频非线性无源隔离器。该隔振器由一个提供负刚度的刀口支承滑动梁和一个并联的垂直机械弹簧组成，以获得准零动刚度。研究了隔振器的静态特性。假设轻粘滞阻尼，动力学行为进行了研究，谐波激励下的响应推导出使用一个简单的近似。利用谐波平衡法（HBM）得到了具有复杂双跳现象的频率响应曲线。得到了激振力水平的极限值。推导了力传递率，并与具有相同阻尼比的等效线性系统进行了比较。非线性隔振器的隔振性能优于线性系统，提供了更广泛的隔离区域。研究了系统参数对系统传递率的影响，并给出了一些有用的准则。
A novel structured ultra-low frequency nonlinear passive isolator is presented. The isolator is composed of a knife-edge supported sliding beam which offers negative stiffness and a vertical mechanical spring in parallel to get quasi-zero dynamic stiffness. The static characteristics of the isolator are studied. Assuming light viscous damping, the dynamic behavior is investigated and the response under harmonic excitation is derived using a simple approximation. Frequency response curves (FRCs), which exhibit complex double jump phenomenon, are obtained by harmonic balance method (HBM). The limitation of the excitation force level is obtained. The force transmissibility is derived and compared with an equivalent linear system with the same damping ratio. The isolation performance of the nonlinear isolator is shown to outperform the linear system for providing a wider isolation region. The influence of system parameters on the transmissibility is examined and some useful guidelines are given.
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影响因子：
4.7
作者：
Zhou, N.;Liu, K.
通讯作者：
Liu, K.
DOI：
10.1063/1.3058391
发表时间：
1976
期刊：
--
影响因子：
--
作者：
C. Harris;C. Crede;H. Trent
通讯作者：
C. Harris;C. Crede;H. Trent
影响因子：
3.9
作者：
P. M. Alabuzhev;E. Rivin
通讯作者：
P. M. Alabuzhev;E. Rivin
影响因子：
4.7
作者：
B. Ravindra;A. Mallik
通讯作者：
B. Ravindra;A. Mallik
影响因子：
--
作者：
M. Bayat;M. Shahidi;A. Barari;G. Domairry
通讯作者：
M. Bayat;M. Shahidi;A. Barari;G. Domairry