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Analysis of conical-cylinder shells fundamental characteristics for structural health diagnostics

Yeo, D.J. , Choi, M.S. , & Tan, A. (2011) Analysis of conical-cylinder shells fundamental characteristics for structural health diagnostics. In The 5th World Congress on Engineering Asset Management (WCEAM 2010), 25-27 October 2010, Brisbane Convention and Exhibition Centre, Brisbane, Qld.

Abstract

This paper describes the formulation for the free vibration of joined conical-cylindrical shells with uniform thickness using the transfer of influence coefficient for identification of structural characteristics. These characteristics are importance for structural health monitoring to develop model. This method was developed based on successive transmission of dynamic influence coefficients, which were defined as the relationships between the displacement and the force vectors at arbitrary nodal circles of the system. The two edges of the shell having arbitrary boundary conditions are supported by several elastic springs with meridional/axial, circumferential, radial and rotational stiffness, respectively. The governing equations of vibration of a conical shell, including a cylindrical shell, are written as a coupled set of first order differential equations by using the transfer matrix of the shell. Once the transfer matrix of a single component has been determined, the entire structure matrix is obtained by the product of each component matrix and the joining matrix. The natural frequencies and the modes of vibration were calculated numerically for joined conical-cylindrical shells. The validity of the present method is demonstrated through simple numerical examples, and through comparison with the results of previous researchers.

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ID Code: 49247
Item Type: Conference Paper
Additional URLs:
Keywords: Vibration Analysis, Concial Shell, Cylindrical Shell, Natural Frequency, Numerical Analysis, Infuence Coefficient
ISBN: 9780857293015
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 23 Mar 2012 13:10
Last Modified: 23 Mar 2012 13:10

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