第15卷第2期 2017年4月
中国工程机械学报
CHINESE JOURNAL OF CONSTRUCTION MACHINERY
Vol.15 No.2 Apr.2017
纤维增强复合薄板非线性振动测试平台开发及应用
常永乐，李晖，杨雪峰，赵帆，李政泽
（东北大学机械工程与自动化学院，沈阳110819）
摘要：自主设计并开发了一套新型纤维增强复合薄板非线性振动测试平台.首先，开发了基于LabVIEW控制的座等功能部件，完成纤维增强复合薄板激振平台的设计与开发，最后，经过对各个功能部件进行安装、调试和组配后，利用该振动测试平台获得了复合薄板结构的3类非线性振动现象，包括谐波失真、软式刚度非线性和非线性跳跃现象，应用研究表明，开发的测试平台能够达到预期实验效果，且相对于已有测试平台，在测试精度、测试
效率方面都有大幅提高，可以为纤维增强复合结构的非线性报动测试间题提供一种新思路和新方法关键词：复合薄板；纤维增强复合材料；非线性振动；振动测试平台
文章编号：16725581(2017)02014706
中图分类号：TB535
文献标志码：A
Development and applicationof nonlinearvibration testing
platformforfiberreinforcedcompositethinplate
CHANGYongle,LIHui，YANGXuefeng,ZHAOFan,LIZhengze
(School of Mechanical Engineering & Automation,Northeastern University,Shenyang 110819,China)
Abstract:A new nonlinear vibration testing platform of fiber reinforced composite thin plate was designed and developed. Firstly, the two-dimensional laser scanning vibration measurement system based on LabVIEW was developed, and subsequently the realization principles of this system and its measuring advantages were introduced in detail.Then, the corresponding exciting platform and some important components, including the special fixture of the composite thin plate, the vibration conversion base and others were also designed. Finally, when we finish the installation, debugging and matching of the above components, three kinds of nonlinear vibration phenomenon of composite thin plate were obtained based on the above testing platform, such as harmonic distortion, the soft nonlinear stiffness and nonlinear jump. The practical application results shows that the self-designed test platform can meet the needs of nonlinear vibration measurement, and its test accuracies and test efficiencies have been greatly improved compared with the traditional ones. Therefore, it can provide a new idea and technique for the nonlinear vibration test of fiber reinforced composite structure.
Key words:composite thin plate; fiber reinforced composite; nonlinear vibration;
vibration
testingplatform
纤维增强复合材料及其薄板结构的比强度高、比模量高、材料具有可设计性、热稳定性好，而且还具有承载力大、质量轻等优点，广泛应用于航空、航天、机械、船舶、体育器械、电气设备、医学、兵器工
业等领域[1].然而，由于纤维增强复合材料不同于常规材料，其性能具有明显的各向异性，其宏观薄板结构件还表现出非线性刚度及阻尼等振动特点(2-3].例如：其固有频率随着外界激振幅度的增
基金项目：国家自然科学基金资助项目（51505070，51375079)；国家重大科学仪器设备开发专项资助项目(2013YQ470765)
作者简介：常永乐（1989—），男，硕土生.E-mail；631081103@qq.com 万方数据