噪声与振动控制 ›› 2019, Vol. 39 ›› Issue (1): 230-234.DOI: 10.3969/j.issn.1006-1355.2019.01.044

• 减振降噪设备与器材 • 上一篇    下一篇

Miura折叠超材料在简谐激励下的振动响应

张大鹏,周翔   

  1. ( 上海交通大学航空航天学院,上海200240 )
  • 收稿日期:2018-04-27 修回日期:2018-06-26 出版日期:2019-02-18 发布日期:2019-02-18
  • 通讯作者: 张大鹏

Vibration Response of Miura Folded Meta-materials under Harmonic Excitations

Zhang DapengsdfZhou NoneXiang2   

  • Received:2018-04-27 Revised:2018-06-26 Online:2019-02-18 Published:2019-02-18
  • Contact: Zhang Dapengsdf

摘要:

折叠超材料基于折叠结构发展而来,具有超常的物理性能。应用ADAMS分析典型的三种结构模型,在力和位移两种简谐激励下,不同折痕刚度对Miura折叠超材料振动响应的影响。结果表明,单自由度结构的Miura模型在两种激励下频率响应类似,通过改变折痕刚度可以改变其共振频率,达到很好的低频隔振效果。多自由度模型可以通过增加堆叠数量降低共振频率。为Miura折叠结构的隔振设计提供一定理论参考。

关键词: 振动与波, 折叠超材料, 简谐激励, 动力响应

Abstract:

Folded metamaterials are based on the development of folding structures and have extraordinary physical properties. ADAMS was used to analyze three typical structural models. Under the simple harmonic excitation of force and displacement, different crease stiffness affected the vibration response of Miura folded metamaterials. The results show that the Miura model with single-degree-of-freedom structure has a similar frequency response under two kinds of excitation, and the resonance frequency can be changed by changing the crease stiffness, which can achieve a good low-frequency isolation effect. The multi-degree-of-freedom model can reduce the resonance frequency by increasing the number of stack. It provides a theoretical reference for the vibration isolation design of Miura folding structure.