Effect of the system imperfections on the dynamic response of a high-static-low-dynamic stiffness vibration isolator
Effect of the system imperfections on the dynamic response of a high-static-low-dynamic stiffness vibration isolator
复制标题
系统缺陷对高静态低动态刚度隔振器动态响应的影响
DOI：
10.1007/s11071-013-1199-7
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发表时间：
2014-01
影响因子：
5.6
通讯作者：
Hua Hongxing
中科院分区：
文献类型：
--
作者：
Liu Xingtian;Sun Jingya;Zhang Zhiyi;Hua Hongxing
研究了由压缩欧拉梁的负刚度校正器与线性隔振器串联构成的高静低动刚度隔振器的动力响应。在考虑刚度和载荷缺陷的情况下，采用谐波平衡法计算了该隔振器的共振频率和响应。具有准零刚度特性的HSLDS隔振器在只有刚度或载荷缺陷的情况下可以提供最低的共振频率。如果负载缺陷总是存在，则没有必要使刚度为零，因为它不再提供最低共振频率。给出了这种不寻常现象的原因。动态响应将表现出软化、硬化和软化-硬化特性，这取决于载荷缺陷、刚度缺陷和激励振幅的组合效应。一般情况下，荷载缺陷会使结构的响应呈现软化特性，而刚度缺陷的增加会减弱这种效应。提高激励水平将使隔振器在不同刚度特性之间进行复杂的切换。
The dynamic response of a high-static-low-dynamic stiffness (HSLDS) isolator formed by parallelly connecting a negative stiffness corrector which uses compressed Euler beams to a linear isolator is investigated in this study. Considering stiffness and load imperfections, the resonance frequency and response of the proposed isolator are obtained by employing harmonic balance method. The HSLDS isolator with quasi-zero stiffness characteristics can offer the lowest resonance frequency provided that there is only stiffness or load imperfection. If load imperfection always exists, there is no need to make the stiffness to zero since it cannot provide the lowest resonance frequency any longer. The reason for this unusual phenomenon is given. The dynamic response will exhibit softening, hardening, and softening-to-hardening characteristics, depending on the combined effect of load imperfection, stiffness imperfection, and excitation amplitude. In general, load imperfection makes the response exhibit softening characteristic and increasing stiffness imperfection will weak this effect. Increasing the excitation level will make the isolator undergo complex switch between different stiffness characteristics.
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影响因子：
4.7
作者：
Zhou, N.;Liu, K.
通讯作者：
Liu, K.
影响因子：
2.4
作者：
Huifang Xiao;M. Brennan;Y. Shao
通讯作者：
Huifang Xiao;M. Brennan;Y. Shao
DOI：
10.1016/j.ijnonlinmec.2011.09.013
发表时间：
2012-12
影响因子：
3.2
作者：
Zhike Peng;G. Meng;Z. Lang;Wenming Zhang;F. Chu
通讯作者：
Zhike Peng;G. Meng;Z. Lang;Wenming Zhang;F. Chu
影响因子：
4.7
作者：
G. Gatti;I. Kovacic;M. Brennan
通讯作者：
G. Gatti;I. Kovacic;M. Brennan
DOI：
10.1243/jmes_jour_1969_011_072_02
发表时间：
1969-12
期刊：
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)
影响因子：
--
作者：
W. Carnegie;Z. Reif
通讯作者：
W. Carnegie;Z. Reif