杆式压电摩擦阻尼器性能的数值分析  

Simulation Analysis of Bar-type Piezoelectric Friction Damper Performance

作　　者：杨飏[1] 崔俊伟[1] 徐彻[1] 

机构地区：[1]大连理工大学运载工程与力学学部船舶工程学院,辽宁大连116024

出　　处：《应用基础与工程科学学报》2014年第4期784-792,共9页Journal of Basic Science and Engineering

基　　金：国家自然科学基金资助项目(50908036);辽宁省自然科学基金项目(201202040)

摘　　要：杆式压电摩擦阻尼器是一种新型可调滞回模型的阻尼装置.本文提出了杆式压电摩擦阻尼器的基本构造,对其力学模型进行了理论分析和推导,建立了阻尼器的数值分析模型.根据推导出的力学模型,模拟了新型阻尼器的多种可调滞回曲线.通过改变新型压电摩擦阻尼器的变形或速度与外加电场强度之间的函数关系,实现了拟摩擦型、拟限位型及拟黏滞型滞回模型.通过单自由度结构减振控制数值分析算例,进一步验证了杆式压电摩擦阻尼器的减振效果.结果表明,新型杆式压电摩擦阻尼器在采用拟黏滞型滞回模型时,对结构的位移、速度和加速度控制效果分别可达到80%、50%和10%左右;采用拟摩擦型滞回模型时,对结构的位移和速度的控制效果可达到70%和48%,但由于控制力始终保持在较大水平不变,因此对加速度的控制效果稍差.Bar-type piezoelectric damper is a new type of damper device with adjustable hysteretic model. Basic configuration of bar-type piezoelectric damper was proposed, mechanics model of the damper was derived and theoretically analyzed, and then the numerical analysis model was established. A variety of adjustable ~steretic curves were simulated in accordance with the derived mechanics model of the dalnper. Simulation of pseudo-friction type, pseudo- displacement limited type and pseudo-viscous type hysteretic models were achieved by adjusting the functional relationship between the deformation or velocity of bar-type piezoelectric damper and the applied electric field intensity. The damping effect of bar-type piezoelectric damper was verified through numerical analysis of vibration control of a SDOF structure. The results show that, while using the pseudo-viscous type model, the control effect of displacement, velocity and acceleration can reach to 80% ,50% and 10% ,respectively;the control effect of displacement, velocity using pseudo-friction type damper can reach to 70% and 48%, respectively, but since the control force keeps to be at high levels, the damper is less effective in acceleration control.

关 键 词：杆式压电摩擦阻尼器 构造设计 性能分析 减振控制 滞回模型 

分 类 号：TU352.11[建筑科学—结构工程]