Accurate modeling of the structure of the acoustic field radiated by a submerged cylindrical shell responding to an external pulse

Authors

  • Serguei Iakovlev Dept. of Engineering Mathematics and Internetworking, Dalhousie University, Halifax, NS, Canada
  • Hugo A. F. A. Santos Dept of Civil Engineering and Architecture, Technical University of Lisbon, IST, Lisbon, Portugal
  • Kyle Williston Dept. of Engineering Mathematics and Internetworking, Dalhousie University, Halifax, NS, Canada
  • Robynne Murray Dept. of Mechanical Engineering, Dalhousie University, Halifax, NS, Canada
  • Martin Mitchell Dept. of Engineering Mathematics and Internetworking, Dalhousie University, Halifax, NS, Canada

Keywords:

Acoustic fields, Computer simulation, Cylinders (shapes), Accurate modeling, Acoustic pressures, Circular cylindrical shells, Cylindrical shell, Dynamic boundary conditions, K-l model, Reissner-Mindlin theory, Steel shells, Stress state

Abstract

Accurate modeling of the structure of the acoustic field radiated by a submerged cylinderical shell responding to an external pulse is presented. A thin evacuated elastic circular cylindrical shell submerged into fluid is considered and it is modeled using the Reissner-Mindlin theory of shells. A steel shell is considered with the thickness of 0.03 m and the radius of 1 m, submerged into water. The fluids and the shell are coupled through the dynamic boundary condition on the interface. The results show that simulations of the stress state of the shell based on RM model take only 13% longer than those based on the KL model. Simulated time-histories of the acoustic pressure were evaluated at several points of the fluid to the available experimental time-histories for similar systems, and a very good match for the the waves is observed.

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Published

2012-09-01

How to Cite

1.
Iakovlev S, Santos HAFA, Williston K, Murray R, Mitchell M. Accurate modeling of the structure of the acoustic field radiated by a submerged cylindrical shell responding to an external pulse. Canadian Acoustics [Internet]. 2012 Sep. 1 [cited 2021 Dec. 2];40(3):78-9. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2548

Issue

Section

Proceedings of the Acoustics Week in Canada

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