Since 1963
ARTICLE
Free vibration of composite cylindrical shells with orthogonal stiffeners
| 1 | Key Lab of Disaster Forecast and Control in Engineering, Ministry of Education, School of Mechanics and Construction Engineering, Jinan University, Guangzhou, China |
CORRESPONDING AUTHOR
Submission date: 2021-11-24
Final revision date: 2022-01-13
Acceptance date: 2022-01-22
Online publication date: 2022-03-17
Publication date: 2022-04-30
Journal of Theoretical and Applied Mechanics 2022;60(2):239–252
KEYWORDS
TOPICS
stability and vibrations systemsdynamics of machines, vehicles and flying structuresstructures mechanicsmechanics of composites
ABSTRACT
This paper proposes theoretical and numerical approaches to scrutinize the free vibration
of orthogonal stiffened cylindrical shells. According to K´arman-Donnell shell theory, the
total energy of the stiffened cylindrical shells is derived. Based on the principle of minimum
potential energy, the eigenfunction related to the frequency is established and solved by
developing a Matlab program. Analytical solutions of the natural frequency for free vibraion
of the stiffened cylindrical shells are calculated and are verified against the finite element
results from ABAQUS software. On account of the observations from the parametric study,
an optimization scheme of the stiffeners is proposed.
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