摘要
研究以连接效结构中置入粘弹性材料时，预紧力大小改变时引起铰点约束刚度变化对模态性能的影响．给出了平移约束刚度和旋转约束刚度变化时结构模态参数变化的解析表达式．可以分析两个参数同时变化的固有频率和损耗因子变化的三维图．可获得对应最大损耗因子约束参数．可为结构的被动控制设计提供一定的指导．
The effects of visco-ealstic materialdamped joints on modal parameters of beamsare investigated. The governing equations of theimpedances at the joints for translational and ro-tational motions are given by considering springswith complex stiffness. The natural frequencies andmodal loss factors can be obtained by solving theequations. Numerical result can be represented inthree dimcnsional curves, which can be used for pas-sive vibration control design directly.
出处
《力学与实践》
CSCD
北大核心
2000年第3期28-31,共4页
Mechanics in Engineering
基金
国家自然科学基金!19632001
关键词
结构振动
梁结构
模态性能
粘弹性阻尼铰
visco-elastic damping joints, complex stiffness, natural frequency, modal loss factor
