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Low Velocity Impact Behavior of Metallic Sandwich Plate with a Truss Core  

Jung, Chang-Gyun (한국과학기술원 기계공학과 대학원)
Seong, Dae-Yong (한국과학기술원 기계공학과 대학원)
Yang, Dong-Yol (한국과학기술원 기계공학과)
Kim, Jin-Suck (조선대학교 기계설계공학과 대학원)
Ahn, Dong-Gyu (조선대학교 기계설계공학과)
Publication Information
Journal of the Korean Society for Precision Engineering / v.23, no.10, 2006 , pp. 80-87 More about this Journal
Abstract
Metallic sandwich plate with a truss core has metallic inner structures which have low relative density between a pair of metal skin sheets or face sheets. In this work, low impact tests have been carried out to examine the behavior of sandwich plates with a pyramidal truss core. For the low velocity impact, the impact apparatus of drop weight type has been fabricated. From the results of the experiments, maximum energy absorption is found to happen when the upper sheet fails. The sandwich plate loses its absorption ability as soon as the inner structures have been crashed completely and optimal core thickness has existed to maximize energy absorption. Comparing the metallic sandwich plate with the monocoque plate, the absorbed energy has been improved up to 160 % and the deflection decreased by up to 76%. As a result, the metallic sandwich plate with a truss core is shown to have good material for impact resistance and energy absorption.
Keywords
metallic sandwich plate; pyramidal truss core; low velocity impact; energy absorption;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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