东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2019, Vol. 40 ›› Issue (1): 63-69.DOI: 10.12068/j.issn.1005-3026.2019.01.013

• 机械工程 • 上一篇    下一篇

多层次修正的纤维增强复合薄壳振动响应分析

李晖1,2， 周正学1,2， 吴腾飞1,2， 韩清凯1,2   

  1. (1. 东北大学 机械工程与自动化学院， 辽宁 沈阳110819; 2. 东北大学 航空动力装备振动及控制教育部重点实验室， 辽宁 沈阳110819)
  • 收稿日期:2017-10-20 修回日期:2017-10-20 出版日期:2019-01-15 发布日期:2019-01-28
  • 通讯作者: 李晖
  • 作者简介:李晖(1982-)，男，内蒙古丰镇人，东北大学副教授，博士后研究人员; 韩清凯(1969-)，男，山东济宁人，东北大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51505070)； 中央高校基本科研业务费专项资金资助项目(N150304011， N160313002)； 东北大学航空动力装备振动及控制教育部重点实验室研究基金资助项目(VCAME201603)

Vibration Response Analysis of Fiber-Reinforced Composite Thin Shell Based on Multilevel Correction Technique

LI Hui1,2， ZHOU Zheng-xue1,2， WU Teng-fei1,2， HAN Qing-kai1,2   

  1. 1. School of Mechanical Engineering & Automation， Northeastern University， Shenyang 110819， China; 2. Key Laboratory of Vibration and Control of Aero-Propulsion System， Ministry of Education， Northeastern University， Shenyang 110819， China.
  • Received:2017-10-20 Revised:2017-10-20 Online:2019-01-15 Published:2019-01-28
  • Contact: LI Hui
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摘要： 采用多层次修正技术对纤维增强复合薄壳的振动响应进行了分析.首先，考虑了复合薄壳纤维方向的影响，并采用Ritz法求解获得了复合壳的振动响应.其次，利用多层次修正技术和测试获得的实验数据，对复合薄壳的几何参数和物理参数进行修正，进而获得了较为精准的理论模型.最后，以T300碳纤维/树脂基复合薄壳为例，搭建了激光旋转扫描测试系统，并获得了前6阶固有频率、模态振型和振动响应.修正后计算获得的共振响应数据与实验测试共振响应数据的误差在5.2%~14.3%之间，处于允许的范围内，进而验证了该分析方法的正确性.

关键词: 纤维增强, 复合薄壳, 振动响应, 基础激励, 多层次修正

Abstract: The vibration response of fiber-reinforced composite thin shell was analyzed based on the multilevel correction technique. Firstly， the theoretical model was established by considering the influence of fiber orientation， and the vibration response was solved by using the Ritz method. Next， the more precise theoretical model of composite thin shell was obtained by using the multi-level correction technique and the experimental data. Finally， T300 fiber/epoxy composite thin shell was taken as the study object and the laser scanning test system was set up to obtain the first 6 natural frequencies， modal shapes and vibration responses. By comparing the experimental resonant response results with the calculated results after adopting the multilevel correction technique， it was found that the calculation error is in the range of 5.2%~14.3%， which is within an acceptable level， and thus the correctness of the above analytical method was verified.

Key words: fiber reinforcement, composite thin shell, vibration response, base excitation, multilevel correction

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