Journal of Northeastern University Natural Science ›› 2018, Vol. 39 ›› Issue (1): 87-92.DOI: 10.12068/j.issn.1005-3026.2018.01.018

• Mechanical Engineering • Previous Articles     Next Articles

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
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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

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