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Aluminum “Egg‐Box” Panel as an Energy Absorber for Pedestrian Protection
Author(s) -
Nowpada Sravanthi,
Chirwa Efford C.,
Myler Peter,
Matsika Emmanuel
Publication year - 2010
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201000054
Subject(s) - frustum , materials science , aluminium , composite material , plateau (mathematics) , structural engineering , absorption (acoustics) , engineering , mechanical engineering , mathematical analysis , mathematics
This paper evaluates the quasi‐static performance of lightweight aluminum “egg‐box” panels which have an improved architecture specifically designed to increase the energy absorption capability. In its entirety, the egg‐box panel structure investigated herein is made up of arrays of positive and negative frusta. To understand the collapse mechanism and the factors influencing the energy absorption thereof, compressive tests were conducted under similar test conditions on two single frusta, one constrained in situ and the other separated from the egg‐box panel exposing the free–free edges. Their load‐displacement histories show characteristics that are similar, with a rise in load to a point where they plateau at a steady state load for the entire collapse time. But the energy absorbed by the in situ constrained frustum is 80% greater than that separated from the egg‐box panel with free–free edges.