0

Full Content is available to subscribers

Subscribe/Learn More  >

Structural and Acoustics Behavior of Chiral Truss-Core Beams

[+] Author Affiliations
Alessandro Spadoni, Massimo Ruzzene

Georgia Institute of Technology

Paper No. IMECE2004-61622, pp. 81-91; 11 pages
doi:10.1115/IMECE2004-61622
From:
  • ASME 2004 International Mechanical Engineering Congress and Exposition
  • Noise Control and Acoustics
  • Anaheim, California, USA, November 13 – 19, 2004
  • Conference Sponsors: Noise Control and Acoustics Division
  • ISBN: 0-7918-4715-2 | eISBN: 0-7918-4178-2, 0-7918-4179-0, 0-7918-4180-4
  • Copyright © 2004 by ASME

abstract

The vibration-reduction and sound-absorption properties of a truss-core sandwich beam are analyzed. The core is composed by the assembly of unit cells across both the length and thickness of the proposed beam. The cells have chiral geometry which features cylinders, or nodes, joined by ligaments, or ribs. The resulting assembly is characterized by a number of interesting properties that can be exploited for the design of alternative honeycomb or cellular topologies to be used in sandwich construction. The vibro-acoustic analysis of the considered beam is performed through a finite element model developed using a commercially available Finite Element package. In the model, the sandwich beam is constrained to a rigid baffle and divides two fluid domains of infinite extent. The dynamic performance of the beam is evaluated through the estimation of the vibration amplitudes of the two constraining layers, while the performance of the beam as an acoustic panel with high insulation characteristics is analyzed through the estimation of the sound transmission loss between the two fluid domains. A sensitivity study to investigate the influence of core configuration and geometry on the beam’s performance is presented. The results indicate the design flexibility offered by the proposed design, which allows modifying and optimizing the structural acoustic performance of the beam through proper selection of the core configuration.

Copyright © 2004 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