Semi-analytical modeling and vibration characteristics analysis of perforated hard coated thin-walled cylindrical shell composite structure

被引：0

作者：

Wei, Dezheng ^{[1
]}

Yang, Jian ^{[1
]}

Zhang, Yue ^{[1
]}

机构：

[1] School of Mechanical Engineering and Automation, University of Science and Technology Liaoning, Anshan

来源：

Zhendong yu Chongji/Journal of Vibration and Shock | 2024年 / 43卷 / 11期

关键词：

circular perforation; free vibration; hard-coated cylindrical shell; semi-analytical;

D O I：

10.13465/j.cnki.jvs.2024.11.007

中图分类号：

学科分类号：

摘要：

Here, aiming at the problem of circular openings in hard coated thin-walled cylindrical shell composite structure, a parameterized circumferential domain decomposition method was proposed, and a semi-analytical model of free vibration of perforated hard coated thin-walled cylindrical shell composite structure was established based on Rayleigh-Ritz method. Taking a perforated thin-walled cylindrical shell coated with NiCoCrAlY + YSZ hard coating material as an example, the effectiveness and rationality of the semi-analytical model were verified by comparing analytical and finite element calculation results. At the same time, effects of opening number, hole axial position, opening size and hard coating elastic modulus on vibration characteristics of perforated hard coated thin-walled cylindrical shell composite structure under holes circumferential uniform distribution condition were investigated. The results showed that opening can increase natural frequencies of the structure, but with increase in number of uniformly distributed holes in circumferential direction, natural frequencies of the structure continuously decrease; when number of openings is equal to circumferential half wave number or its special multiple, a special phenomenon of sudden increase in natural frequencies of the structure occurs; with increase in elastic modulus of hard coating, natural frequencies of the structure continue to increase; with increase in axial opening position, natural frequencies of the structure continuously decreases, and when number of openings is equal to circumferential half wave number or its special multiple, the reduction degree can greatly increase; increase in aperture can also reduce natural frequencies of the structure, but when number of openings is equal to circumferential half wave number or its special multiple, natural frequencies of the structure can increase with increase in aperture. © 2024 Chinese Vibration Engineering Society. All rights reserved.

引用

页码：58 / 65and93

页数：6535

共 16 条

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