第20卷
第9期
2012年9月
文章编号
1004-924X(2012)09-2029-07
光学精密工程
Optics and Precision Engineering
Vol. 20No.9
Sep.2012
压电驱动共振式高频疲劳试验机构的设计与实验
接勐1,2，刘焱1,3，谢海峰，杨志刚1*，杨鲁义"(1.吉林大学机械科学与工程学院，吉林长春130025； 2.吉林化工学院机电工程学院，吉林吉林132022 3.东北电力大学机械工程学院，吉林吉林132012）
摘要：针对在小振幅、高频受力工况下微小与硬脆材料构件的疲劳检测，提出利用压电报子(PZT、PLZT或PMN)作为高频疫劳试验机构的驱动力源，并利用系统共报方法设计高频疲劳试验机构。首先，介绍压电共振式疲劳试验机构的工作原理，建立了动力学模型，获得了系统的动态特性。然后，设计和制作了样机。最后，利用样机测量了作用在试件上的动载荷。实验结果表明；改变输人交流电压幅值(100~250V)和板弹簧厚度(1.1~0.6mm)，可施加在试件上的动载荷为 24.7～99.2N。本文制成的样机适用于测试动载荷在为24.7～99.2N，且在小振幅、高额受力工况下试件的拉伸和夺曲疲劳性能，
关键词：压电驱动；压电振子；共振式疲劳试验机；拉伸和害曲疲劳测试
中图分类号：TN384;TH871.3
文献标识码：A
doi;10.3788/OPE,20122009.2029
Designandexperimentofpiezoelectricresonance
high frequency fatigue testing machine
JIE Mengl-, LIU Yan'-",XIE Hai-feng',YANG Zhi-gang'', YANG Lu-yi
(l,College of Mechanical Science and Engineering, JilinUniversity,Changchun130025,China; 2.College of Mechanical and Electrical Engineering,
JilinInstituteofChemicalTechnology,Jilin132022,China;
3.School of Mechanical Engineering,NortheastDianliUniversity,Jilin132012,China)
Corresponding author,E-mail;yzg@jlu,edu.cn
Abstract: To get fatigue properties of the small and hard brittle components working at conditions of little amplitudes and high frequency forces, this paper presents a novel kind of resonance and high fre quency fatigue testing machine driven by a piezoelectric vibrator (PZT,PLZT or PMN). First, the working principle of the piezoelectric resonance and high frequency fatigue testing machine was intro-duced, and the dynamic model of the machine was established and its systemic dynamic characteristics were obtained, Then, a prototype was designed and produced. Finally, the dynamic load on the speci-men was measured by the prototype. The results indicate that the dynamic load on the specimen is
收稿日期：2012-05-08；修订日期：2012-06-11
基金项目：国家自然科学基金资助项目（No.51075175）