Free and Forced Vibration Analysis of Stiffened Cylindrical Shells under Moving Internal Pressure

Document Type : Research Article

Authors

1 MSc student, Mechanical Engineering,- Malek Ashtar University of Technology (MUT), -Tehran,- Iran

2 Malek-e-Ashtar University of Technology/ Faculty of Materials & Manufacturing Processes

Abstract

Cylindrical shells are used tremendously in many engineering fields such as ships, submarines, and fuel tanks in airplanes. In many cases, shells are exposed to dynamic loads. One of the dynamic loads in shells is internal moving pressure. Analysis of cylindrical stiffened shells under moving internal pressure are investigated in this research. Equations of motion are based on classic shell theory and derived from Hamilton’s method. Boundary conditions are assumed simply support. Displacement components are assumed Fourie double series based on boundary conditions. Equations of motions are solved by Galerkin weighted functions method for calculation of natural frequency and dynamic response of cylindrical shells under moving internal pressure. Codes in FORTRAN are used to derive the natural frequency and dynamic response of cylindrical shells. Results are compared with other references and Abaqus software. The effect of geometrical parameters on natural frequency and dynamic response of cylindrical shells under moving internal pressure are investigated finally and results for stiffened shells and unstiffened shells with different stiffeners are compared.

Keywords

Main Subjects

References

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Amirkabir Journal of Mechanical Engineering
Volume 53, Issue 12
March 2022
Pages 5867-5886

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