中空轴系多模态纵向减振研究

赵帅1,陈前1,黄志伟2,姚冰1

振动与冲击 ›› 2016, Vol. 35 ›› Issue (12) : 96-101.

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PDF(1432 KB)
振动与冲击 ›› 2016, Vol. 35 ›› Issue (12) : 96-101.
论文

中空轴系多模态纵向减振研究

  • 赵帅1,陈前1,黄志伟2,姚冰1
作者信息 +

Research on reduction of multi-mode longitudinal vibration of hollow shafting

  • ZHAO Shuai1,CHEN Qian1,HUANG Zhi-wei2,YAO Bing1
Author information +
文章历史 +

摘要

采用阻尼动力吸振器对中空轴系纵向多阶模态进行振动控制,结合子结构综合法和传递矩阵法,建立了多个阻尼动力吸振器—轴系耦合系统的动力学模型,并进行了动力学特性分析。考虑到各阶阻尼动力吸振器间的相互影响,以极小化目标频段范围内轴系位移响应的均方值为目标函数,对各阶阻尼动力吸振器的参数进行了联合优化。针对轴系中空特点,设计了阻尼动力吸振器的具体结构形式,利用有限元仿真对理论计算进行了验证。研究表明:轴系多模态控制时,在多阶阻尼动力吸振器作用下,目标频段范围内的轴系纵向共振峰得到抑制,频响曲线趋于平缓;对多阶吸振器进行联合优化后,吸振器的吸振效果得到进一步提升;文中提出的多阶吸振器设计方法能为连续系统多模态振动控制提供一定的参考。

Abstract

Damped dynamic vibration absorbers are adopted to attenuate multi-mode longitudinal vibration of the hollow shafting, the dynamic model of the shafting with multiple dynamic vibration absorbers is established using the transfer matrix method, combined with the substructure synthetic method, and the dynamic behavior of the shafting under harmonic excitation is analyzed. Considering the coupling behavior of dynamic vibration absorbers, the parameters of the dynamic vibration absorbers are optimized, regarding the mean square of the displacement response in a targeted frequency range as an object function. Based on the hollow characteristic of the shafting, a specific structure of dynamic vibration absorber is designed, and finite element stimulation is used to verify to the theoretical calculation. The research results showed that the resonance peak is strongly attenuated and the frequency response function curve turned to smooth when multiple dynamic vibration absorbers attached to the shafting, furthermore, the absorption effect is improved after an optimization of dynamic vibration absorbers.

 

关键词

中空轴系 / 纵向振动 / 传递矩阵法 / 阻尼动力吸振器

Key words

hollow shafting;longitudinal vibration;transfer matrix method / dynamic vibration absorber;

引用本文

导出引用
赵帅1,陈前1,黄志伟2,姚冰1. 中空轴系多模态纵向减振研究[J]. 振动与冲击, 2016, 35(12): 96-101
ZHAO Shuai1,CHEN Qian1,HUANG Zhi-wei2,YAO Bing1. Research on reduction of multi-mode longitudinal vibration of hollow shafting[J]. Journal of Vibration and Shock, 2016, 35(12): 96-101

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