摘要
目的实现结构振动最优控制目标。方法基于振动控制的需求,以工程上典型的九宫格薄板为被控对象,选取合理的安装位置,通过有限元仿真进行附加粘弹性阻尼层和动力吸振器的抑振效能对比研究。结果附加动力吸振器较附加阻尼层最大可实现69.2%的减幅比。结论符合最优参数设计的动力吸振器在共振频率附近抑振效果更好,但粘弹性阻尼材料抑振范围更广,覆盖高中低各个频段。
In order to achieve effective control of structure vibration,based on the requirements of vibration control,a typical nine grid thin plate in engineering is selected as the controlled object in this paper,and the reasonable installation position is selected.The vibration suppression efficiency of additional viscoelastic damping layer and dynamic vibration absorber(DVA)is compared through finite element simulation.The maximum reduction ratio of the additional dynamic absorber is 69.2%compared with the additional damping layer.The results showed that using dynamic vibration absorber with the optimal design parameters has a better vibration suppression performance in resonance frequency,while using viscoelastic damping layer has a wider vibration suppression range,covering high,medium and low frequency.
作者
郭通
GUO Tong(Aircraft Strength Research Institute of China,Xi’an 710065,China)
出处
《装备环境工程》
CAS
2021年第2期90-94,共5页
Equipment Environmental Engineering
基金
航空科学基金(2019ZA023001)。
关键词
结构振动
有限元
阻尼层
动力吸振器
structural vibration
finite element
damping layer
dynamic vibration absorber
