纤维增强复合薄壳固有特性计算及验证

中国机械工程

纤维增强复合薄壳固有特性计算及验证

周正学1;李晖1;薛鹏程1;吴怀帅1;陈姝瑶2

1.东北大学机械工程与自动化学院，沈阳，110819
2.东北大学理学院，沈阳，110819

出版日期:2018-05-25 发布日期:2018-05-25
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）
National Natural Science Foundation of China（No. 51505070）
Fundamental Research Funds for the Central Universities（No. N150304011，N160313002）

Natural Characteristic Calculation and Verification of FRCS

ZHOU Zhengxue1　LI Hui1　XUE Pengcheng1　WU Huaishuai1　CHEN Shuyao2

1.School of Mechanical Engineering and Automation， Northeastern University， Shenyang， 110819
2.College of Sciences， Northeastern University， Shenyang， 110819

Online:2018-05-25 Published:2018-05-25
Supported by:
National Natural Science Foundation of China（No. 51505070）
Fundamental Research Funds for the Central Universities（No. N150304011，N160313002）

摘要/Abstract

摘要： 对悬臂纤维增强复合薄壳的固有特性进行了计算及实验验证。针对纤维增强复合薄壳的结构特点，对其进行了理论建模；通过Rayleigh-Ritz法获得了复合薄壳的固有频率和振型结果；以T300碳纤维/树脂基复合薄壳为例，通过实验测试获得了前8阶固有频率和模态振型。验证结果表明求解的纤维增强复合薄壳固有频率计算结果与实验结果的误差在2.2%~9.3%之间，且两种方法获得的振型结果也吻合，验证了所提出的计算方法的正确性。

关键词: 纤维增强复合薄壳, 固有特性, 悬臂边界, 正交多项式

Abstract: Natural characteristics of FRCS under cantilever boundary were calculated and verified by experiments.Firstly， a theoretical model of FRCS was established by considering the structural characteristics.Then， the natural frequency and mode shape of FRCS were obtained by Rayleigh-Ritz method.Finally， T300 fiber/epoxy composite shell was taken as a study object， and the natural frequency and mode shape were measured by experimental tests.The results show that the errors of the natural frequencies from calculations and experiments are within the range of 2.2%~9.3%， the calculation results of the mode shapes are also consistent with the experimental ones， thus the correctness of proposed method was verified.

Key words: fiber reinforced composite thin shell（FRCS）, natural characteristic, cantilever boundary, orthogonal polynomial

中图分类号:

TB535

周正学1;李晖1;薛鹏程1;吴怀帅1;陈姝瑶2. 纤维增强复合薄壳固有特性计算及验证[J]. 中国机械工程.

ZHOU Zhengxue1　LI Hui1　XUE Pengcheng1　WU Huaishuai1　CHEN Shuyao2. Natural Characteristic Calculation and Verification of FRCS[J]. China Mechanical Engineering.

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