新型细长支杆振动抑制方法
Method for Vibration Suppressing of New Type of Slender Support Rods
贾如玉 1姚红良 1陈亚强 1唐陈伟1
作者信息
- 1. 东北大学 机械工程与自动化学院,辽宁 沈阳 110819
- 折叠
摘要
基于点阵结构比刚度高、轻质量和设计性强等优点,提出在点阵结构内部填充黏弹性阻尼材料,设计了新型细长支杆-阻尼填充点阵支杆,该结构在具有足够承载能力的基础上拥有较高的阻尼性能.利用有限元方法对点阵支杆和阻尼填充支杆进行动力学分析,并通过响应面方法建立了一阶共振频率对应的动刚度峰值的响应面近似模型,分析了结构参数对动力学特性的影响,使用遗传算法对动刚度峰值进行了优化,确定了在给定结构参数范围内减振性能最好的结构尺寸参数.最后实验证明阻尼填充点阵支杆的加速度响应幅值降低了57.14%,验证其优越的减振性能.
Abstract
Based on the advantages of high specific stiffness,light weight and designability of the lattice structure,a new type of slender support rod with the lattice structure filled with viscoelastic damping material was proposed,which enables the structure have strong damping performance on the basis of sufficient load-bearing capacity.The finite element method was used to analyze the dynamics of the lattice support rod and damping filled lattice support rod,and a response surface approximate model of dynamic stiffness peak corresponding to the first-order resonance frequency was established by the response surface method.The influence of the structural parameters on the dynamic characteristics was analyzed,and the dynamic stiffness peak was optimized by the genetic algorithm.Finally,the test demonstrated 57.14%reduction in the acceleration response amplitude for the lattic support rod filled with damping,confirming their superior damping performance.
关键词
细长支杆/振动抑制/点阵结构/黏弹性阻尼材料/参数优化Key words
slender support rod/vibration suppressing/lattice structure/viscoelastic damping material/parameter optimization引用本文复制引用
出版年
2024
NETL
NSTL
万方数据