报告详情
Free vibration analysis of ring-stiffened cylindrical shell-plate coupled structures by using the Chebyshev-Ritz formulation
编号：182
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更新：2021-09-13 09:45:19 浏览：302次
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报告开始：暂无开始时间（Asia/Shanghai）
报告时间：暂无持续时间
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摘要
The free vibration characteristics of a ring-stiffened cylindrical shell-plate coupled structure is investigated. An analysis model for vibration of the coupled structure with arbitrary boundary conditions is constructed. The stiffeners are treated as discrete elements on the shell. Inside the shell, the transverse and in-plane vibration of rectangular plate with cutout is considered. Arbitrary boundary conditions of both the shell and plate are achieved by different combinations of elastic constraints. Four types of coupling springs are introduced to describe the corresponding couplings between forces and moments at the plate-shell junction. Displacements of plate and shell are separately expanded into two-dimensional Chebyshev polynomials series. With the aid of the Ritz method, a system of homogeneous equations governing the eigenvalue problem is obtained. This system allows to obtain the natural frequencies and modes of the coupled structure. The influences of boundary conditions and coupling conditions on the free vibration characteristics are studied. It is found that the present formulation shows the ability of affording accurate and efficient results.
关键词
Ritz method; Cylindrical shell-ring-plate structure; Vibration analysis; Chebyshev polynomials
报告人
Tiantong Zhao
student Ningbo University稿件作者
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重要日期
-
会议日期
11月01日
2022
至11月03日
2022
-
10月30日 2022
初稿截稿日期
-
11月09日 2022
注册截止日期
主办单位
Qingdao University of Technology
联系方式
- Miss T. Yuan
- se******@apvc2021.org
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