Abstract detail

62 / 2021-03-29 14:40:56
Free vibration analysis of ring-stiffened cylindrical shell-plate coupled structures by using the Chebyshev-Ritz formulation
Ritz method; Cylindrical shell-ring-plate structure; Vibration analysis; Chebyshev polynomials
Other related fields
Draft Paper Accepted
Tiantong Zhao / Ningbo University
Yuehua Chen / Ningbo University
 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.

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Important Dates

Abstract Submission Deadline:

 31st March 2021 15th April 2021

Extended Deadline: 1st Aug. 2022

 

Abstract Acceptance:

30th April  2021 Rollover

 

Full Paper Submission Deadline:

30th June 2021  14th July 2021

Extended Deadline: 15th Aug. 2022 

 

Notification of Acceptance:

15th August 2021 1st Sept. 2021

1st Sept. 2022

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