机械科学与技术2018，Vol.37Issue(6)：926-929,4.DOI:10.13433/j.cnki.1003-8728.2018.0616
一种压电型变刚度动力吸振器原理与验证
Principle and Validation of a Novel Variable Stiffness Dynamic Vibration Absorber by using Piezoelectric Stack
摘要
Abstract
In order to expand the effective frequency band of a conventional dynamic vibration absorber (DVA),a novel variable stiffness DVA with piezoelectric stack is designed.Using Euler beam theory,a piezoelectric stack element is applied to generate preload on the beam which acts as a spring element in the DVA to tune its bending stiffness.The principle of this novel DVA is presented and the equation of the bending stiffness for an Euler beam was deduced.A prototype of this variable stiffness DVA is fabricated.The dynamic behavior of the DVA under different driven voltages is validated experimentally.There results show that the natural frequency of the DVA can be shifted from 75 Hz to 71.5 Hz when the driven voltage was tuned from 0 V to 120 V.关键词
动力吸振/压电堆/变刚度/欧拉梁Key words
vibration absorber/piezoelectric stack/variable stiffness/Euler beam分类
通用工业技术引用本文复制引用
李凯翔,李鹏,周江贝,潘凯..一种压电型变刚度动力吸振器原理与验证[J].机械科学与技术,2018,37(6):926-929,4.基金项目
中国航空工业集团公司技术创新基金项目(2014A62352R)资助 （2014A62352R）
