EI、Scopus 收录
中文核心期刊

手性超材料惯容吸振器的扭转振动抑制研究

RESEARCH ON TORSIONAL VIBRATION SUPPRESSION OF CHIRAL METAMATERIAL INERTER DYNAMIC VIBRATION ABSORBER

  • 摘要: 惯容结构常用于振动抑制中, 有着较为良好的减振效果. 而惯容与吸振器结合的新型吸振器具有轻量化的优点, 然而设计复杂的惯容结构限制了惯容吸振器在振动领域的广泛应用. 针对这一局限性, 设计一种具有简单高效惯容结构的手性超材料惯容吸振器(CIDVA). 首先引入了手性超材料的压缩−扭转耦合效应, 并利用该效应放大惯容盘的扭转行程, 形成惯容机制. 为了保证惯容机制的可行, 设计一种辅助机构来保证手性超材料的运动. 其次研究了CIDVA结构和工作原理并进行有限元仿真分析, 计算和验证其惯容放大常数. 并在此基础上建立了CIDVA−主系统的动力学方程, 对CIDVA−主系统在稳态和瞬态激励下的扭转振动抑制能力进行了研究, 并与锁定CIDVA进行了对比. 接着对惯容有效性进行了分析. 最后, 基于试验验证了CIDVA对主系统的扭转抑振能力. 结果表明, CIDVA能在瞬态和稳态激励下有效抑制主系统扭转振动, 且相较于传统DVA, 能节省自身10倍以上的转动惯量. 为DVA实现轻量化设计和高效的振动抑制提供了新思路和方法.

     

    Abstract: The inerter structure has proven to be highly effective in vibration suppression, exhibiting remarkable vibration reduction capabilities. The new type of dynamic vibration absorber combined with inerter and vibration absorber has the advantage of light weight. However, the complex design of traditional inerter structures hinders their widespread adoption in vibration control applications. In view of this limitation, a chiral metamaterial inerter dynamic vibration absorber (CIDVA) with simple and efficient inerter structure is designed in this paper. The CIDVA combines the advantages of both inerter and vibration absorber technologies, notably its lightweight design. Firstly, the compress-torsion coupling effect of chiral metamaterials is introduced, and the effect is used to amplify the torsion stroke of the inerter disk to form the inerter mechanism. In order to ensure the feasibility of the inerter mechanism, an auxiliary mechanism is designed to ensure the movement of chiral metamaterials. Secondly, the structure and working principle of CIDVA are thoroughly examined, and the finite element simulation analysis is carried out to accurately calculate and verify its inertance amplification constant. Building upon this foundation, the dynamic equation of the CIDVA-primary system is established, enabling a comprehensive study of the torsional vibration suppression abilities of the CIDVA-main system under steady-state and transient excitations. A comparison with the locked CIDVA configuration is also performed. Furthermore, the validity of the achieved inerter is meticulously analyzed. Finally, to validate the torsional vibration suppression capabilities of CIDVA on the main system, experimental verification is conducted. The simulation and experimental results demonstrate that CIDVA can effectively suppress the torsional vibration of the primary system under both transient and steady-state excitation, surpassing the performance of traditional DVA. Notably, CIDVA achieves significant weight savings, reducing its own moment of inertia by more than 10 times compared to traditional DVAs. and can save more than 10 times of its own moment of inertia compared with the traditional DVA. It provides new ideas and methods for DVA to achieve lightweight design and efficient vibration suppression. These findings contribute novel ideas and methodologies for achieving lightweight design and efficient vibration suppression in the field of DVAs.

     

/

返回文章
返回