0

Full Content is available to subscribers

Subscribe/Learn More  >

Structural-Acoustic Simulations of Naval Vehicles Using an Energy Finite Element Method

[+] Author Affiliations
Nickolas Vlahopoulos

University of Michigan, Ann Arbor, MI

Paper No. DETC2011-47758, pp. 509-516; 8 pages
doi:10.1115/DETC2011-47758
From:
  • ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 1: 23rd Biennial Conference on Mechanical Vibration and Noise, Parts A and B
  • Washington, DC, USA, August 28–31, 2011
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5478-5
  • Copyright © 2011 by ASME

abstract

Simulation methods can be used for meeting both the new stealth initiatives for surface ship silencing, and the stringent limits on acceptable hull vibration. Additionally, interior noise concerns must be considered due to habitability and operational readiness. The pursuit of innovative ship designs, utilization of new materials, and the increasingly demanding performance requirements, dictate a more broadly focused thrust for addressing noise and vibration issues due to multiple sources of excitation during the design process. This expanded technical view also requires that the types of tools utilized for these assessments also improve and that they can provide results within a short enough time that can affect the design cycle. An Energy Finite Element Analysis (EFEA) formulation has been developed for computing efficiently the vibration of complex vehicles and the associated radiated noise at frequencies beyond the limits of conventional finite element methods. In this paper, the main theoretical aspects of the EFEA will be presented first. Results are presented for two 1/8th scale structures representing an advanced double hull design and a conventional hull design of a surface ship. Results for the structural vibration induced on the outer bottom part of the structures are compared to available test data.

Copyright © 2011 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In