A nonlinear model for vibro-acoustic analysis of a submerged axially moving cylindrical shell

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

Orafa A.H.; Jalili M.M.; Fotuhi A.R.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING) Year:2024 | Volume:40 | Issue:2 Page(s): 85-96

Download Full-Text

Persian Verion

View:

Download:

Cites:

Information Journal Paper

Title

A nonlinear model for vibro-acoustic analysis of a submerged axially moving cylindrical shell

Author(s)

Orafa A.H. | Jalili M.M. | Fotuhi A.R. | Issue Writer Certificate

Keywords

Nonlinear vibro-acoustics

Submerged moving cylindrical shell

Transmission loss

Method of multiple scales

Abstract

Investigating the acoustic vibrations of moving cylindrical shells in fluid is of interest to researchers due to their many applications in marine structures. Underwater vehicles, submarine pipelines, and oil and gas industries are examples of shells used in the marine industry. Analyzing the acoustic vibration of submerged structures and investigating the effect of various parameters on their sound energy absorption is of great importance. If most of the radiated sound intensity is transferred to the structure due to its reflection, the possibility of identifying it will decrease. For this reason, much research has been conducted to investigate the acoustic behavior of submerged structures, especially cylindrical shells, due to their many uses in underwater vehicles. In this study, the nonlinear vibro-acoustic dynamics and stability of doubly-clamped axially moving cylindrical shells are investigated. The exterior surface of the shell is in contact with the fluid and subjected to oblique incident plane sound waves. Donnell’s nonlinear shallow shell theory is used to derive the nonlinear partial differential equation of the cylindrical shell for the radial motion. Also, the pressure on the cylindrical shell is calculated from Bernoulli's equation for unstable fluid. The Galerkin method is employed to discretize the equations of motion into the set of coupled nonlinear, nonhomogeneous ordinary second-order differential equations. Considering both driven and companion modes, the Multiple Scales Method is used to obtain the response of the system. The effects of sound level, incident angle, and axial velocity on the frequency response of the system are studied. Comparing the frequency response of the nonlinear model presented in this article with the frequency response of the linearized model shows that for the high intensity and high angle of the incident sound and also the low speed of the shell movement in the depth of the fluid, the error of the linear model in determining the resonance frequency and the stable response range of the cylindrical shell is large.

Multimedia

No record.

Cites

No record.

References

No record.

Cite

Related Journal Papers

No record.

Related Seminar Papers

No record.

Related Plans