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Dynamic Crush Behavior of Aluminum 5052-H38 Honeycomb Specimens Under Out-of-Plane Inclined Loads

[+] Author Affiliations
Sung-tae Hong, Jwo Pan

University of Michigan

Tau Tyan, Priya Prasad

Ford Motor Company

Paper No. IMECE2004-61135, pp. 35-41; 7 pages
doi:10.1115/IMECE2004-61135
From:
  • ASME 2004 International Mechanical Engineering Congress and Exposition
  • Transportation: Transportation and Environment
  • Anaheim, California, USA, November 13 – 19, 2004
  • Conference Sponsors: Transportation
  • ISBN: 0-7918-4722-5 | eISBN: 0-7918-4178-2, 0-7918-4179-0, 0-7918-4180-4
  • Copyright © 2004 by ASME

abstract

The dynamic crush behavior of aluminum 5052-H38 honeycomb specimens under out-of-plane inclined loads is investigated. Honeycomb specimens were designed to minimize the secondary stresses under out-of-plane inclined loads. A test fixture was designed such that inclined loads can be applied in dynamic crush tests. A static linear elastic finite element analysis was performed to understand the stress distributions in honeycomb specimens under inclined loads. The computational results show that the secondary stresses of the specimens are limited to the region near the stress-free boundary. The results of dynamic crush tests indicate that the effects of the impact velocity on the crush strengths are significant. Under dynamic loads, as the impact velocity increases, the crush strengths increase. The trends of the inclined crush strengths for specimens with different in-plane orientation angles as functions of the impact velocity are very similar to that of the pure compressive crush strength. Honeycomb specimens under pure compressive and inclined loads show similar progressive folding mechanisms. The similar trends of the crush strengths as functions of the impact velocity are possibly due to the similar progressive folding mechanisms.

Copyright © 2004 by ASME
Topics: Aluminum , Stress

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