Transient vibration characteristics analysis of cylindrical shell structure with complex boundary conditions

被引：0
|
作者：
Pang F. [1 ]
Li H. [1 ]
Peng D. [1 ]
Li Y. [1 ]
Tian H. [1 ]
机构：
[1] College of Shipbuilding Engineering, Harbin Engineering University, Harbin
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2019年 / 40卷 / 07期
关键词：
Chebyshev determinant; Complex boundary conditions; Cylindrical shell; Displacement function; Domain decomposition method; Least squares residual; Thin shell theory; Transient vibration;
D O I：
10.11990/jheu.201805099
中图分类号：
学科分类号：
摘要：
Considering the deficiency in the research of the transient vibration characteristics of cylindrical shells under complex boundary conditions, the paper proposes a semi-analytical method to analyze the transient vibration characteristics of cylindrical shells. Based on the domain energy decomposition method and Reissner-Naghdi's linear thin shell theory, the cylindrical shell is decomposed into several shell sections along the generatrix direction, and the solution model for the general boundary condition of the shell is deduced. The displacement functions of the shell are represented by Chebyshev determinant and the Fourier series, and the least squares residual is introduced to eliminate the computational instability. The transient vibration characteristics of the cylindrical shell structure are analyzed and compared with the finite element simulation result, verifying the effectiveness of the method. The results show that in the same frequency range, the smaller the thickness of the structure, the greater the peak values of the displacement curve and the greater the transient response. The loss factor mainly affects the resonance peak value of the structure but has little effect on the natural frequency of the structure. © 2019, Editorial Department of Journal of HEU. All right reserved.
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页码：1238 / 1244
页数：6
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