Effect of opening angle on free vibration of composite sandwich cylindrical shells

doi:10.19936/j.cnki.2096-8000.20220228.003

COMPOSITES SCIENCE AND ENGINEERING ›› 2022, Vol. 0 ›› Issue (2): 19-22.DOI: 10.19936/j.cnki.2096-8000.20220228.003

• BASIC STUDY • Previous Articles Next Articles

Effect of opening angle on free vibration of composite sandwich cylindrical shells

ZHAI Yan-chun¹, YUE Xiu-jie¹, WANG Peng-hao¹, ZHANG Ping², YU Xiao¹

1. College of Intelligent Manufacturing, Qingdao Huanghai University, Qingdao 266520, China;
2. College of Mechanical and Electrical Engineering, Shandong University of Science and Technology, Qingdao 266520, China

Received:2021-05-19 Online:2022-02-28 Published:2022-03-14

Abstract

Abstract: Based on the first-order piecewise displacement model and Hamilton′s principle, the structural dynamics equation of composite sandwich cylindrical shell is derived. The influence of the opening angle on the free vibration of the structure is explored. The results show that with the increase of the opening angle, the first-order mode loss factor gradually decreases, and when the opening angle is less than a certain value, the reduction rate is faster. The first mode frequency of the short shell increases gradually. The first order modal frequency of the long shell shows a tendency of decreasing first and then increasing.

Key words: composite cylindrical shell, opening angle, free vibration, first-order piecewise displacement theory

CLC Number:

TB332

ZHAI Yan-chun, YUE Xiu-jie, WANG Peng-hao, ZHANG Ping, YU Xiao. Effect of opening angle on free vibration of composite sandwich cylindrical shells[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(2): 19-22.

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Effect of opening angle on free vibration of composite sandwich cylindrical shells

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