A study on effect of foam on the vibration quality of aluminium structure under combined loading

Masud Nawaz, Aniruddha Mitra

Research output: Contribution to book or proceedingConference articlepeer-review

Abstract

Foamed structures are being used in the body of vehicles and act as a shock-absorbing component under impact loading. Previous studies explored the impact and buckling resistances of foamed aluminum tubes. The purpose of this current study was to investigate the effect of introduction of foam on the damping characteristics of an aluminum tube under vibration. Two identical "L" shaped aluminum tubes were used for the experiment with one filled with structural foam. The "L" cantilever beams were chosen over the straight beam to simulate a more realistic combined loading condition of bending and torsion. The natural frequency of the system was determined analytically. The experimental results were compared and showed an acceptable level of error. The damping ratio of the aluminum tube with the foam showed an average increase of about forty percent in comparison to the tube without foam, indicating a significant increase of energy loss due to foam insertion inside the aluminum tube. Data were compared with similar experimental results from the literature and a good correlation was observed. This research project was carried out as a component of a graduate-level vibration course offered by the Mechanical and Electrical Engineering Department at Georgia Southern University.

Original languageEnglish
Title of host publicationVibration Institute Annual Training Conference 2012
PublisherVibration Institute
Pages175-179
Number of pages5
ISBN (Electronic)9781627480284
StatePublished - 2012
EventVibration Institute Annual Training Conference 2012 - Williamsburg, United States
Duration: Jun 19 2012Jun 22 2012

Publication series

NameVibration Institute Annual Training Conference 2012

Conference

ConferenceVibration Institute Annual Training Conference 2012
Country/TerritoryUnited States
CityWilliamsburg
Period06/19/1206/22/12

Keywords

  • Aluminum Tube
  • Cantilever Beam
  • Combined Load
  • Foam
  • L-Shape
  • Vibration

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