东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (1): 87-92.DOI: 10.12068/j.issn.1005-3026.2018.01.018

• 机械工程 • 上一篇    下一篇

热振环境下纤维增强悬臂复合薄板的固有特性

李晖, 吴怀帅, 位莎, 李政泽   

  1. (东北大学 机械工程与自动化学院, 辽宁 沈阳110819)
  • 收稿日期:2017-04-26 修回日期:2017-04-26 出版日期:2018-01-15 发布日期:2018-01-31
  • 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.
  • 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).

Natural Characteristics of Fiber-Reinforced Cantilever Composite Thin Plate Under Thermal Vibration Environment

LI Hui, WU Huai-shuai, WEI Sha, LI Zheng-ze   

  1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China.
  • Received:2017-04-26 Revised:2017-04-26 Online:2018-01-15 Published:2018-01-31
  • Contact: LI Hui
  • About author:-
  • Supported by:
    -

摘要: 基于哈密顿原理建立了纤维增强悬壁复合薄板的动力学方程,并利用双向梁函数法对其固有频率进行求解.然后,编写了Matlab计算程序,并给出了热振环境下分析其固有特性的具体流程,最后,搭建了该类悬臂复合薄板结构在热振环境下的固有特性测试系统.并以TC500碳纤维/树脂复合薄板为研究对象,对其固有频率进行了测试.结果表明,热振环境下纤维增强悬臂复合薄板固有频率计算结果与实验结果的误差在15%以内,且振型结果也与测试振型结果一致,进而验证了所提出的理论分析方法的正确性.

关键词: 纤维增强, 复合薄板, 固有频率, 热振环境, 悬臂边界

Abstract: The equation of motion for fiber-reinforced composite cantilever thin plate was derived based on Hamilton’s principle, and its natural frequencies were calculated by two-dimension beam function method. Then, the Matlab calculating program was written, and the specific analysis procedures of natural characteristics of fiber-reinforced cantilever thin plate under thermal vibration environment were also proposed. Finally, TC500 fiber/epoxy composite plate was taken as a study object, and its frequency and shape results are measured based on the established test system of natural characteristics of the cantilever composite plate under thermal vibration environment. It was found by comparison that the calculated frequencies under thermal vibration environment have a good agreement with the experimental results, and the related errors are within the range of 15 %. Besides, modal shapes are also consistent with the measured shape results, thus the effectiveness of the above method is verified.

Key words: fiber-reinforced, composite thin plate, natural frequency, thermal vibration environment, cantilever boundary

中图分类号: