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Shock and Vibration
Volume 2015 (2015), Article ID 689546, 8 pages
http://dx.doi.org/10.1155/2015/689546
Research Article

Experimental Study on the Shock Absorption Performance of Combined Aluminium Honeycombs under Impact Loading

1College of Science, National University of Defense Technology, Changsha 410073, China
2Beijing Institute of Astronautic System Engineering, Beijing 100068, China

Received 27 January 2015; Revised 11 May 2015; Accepted 12 May 2015

Academic Editor: Sakdirat Kaewunruen

Copyright © 2015 Lei Cao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Shock absorption characteristics of combined aluminium honeycomb structures were studied experimentally. In the experiments, a testing platform was design to compare the shock absorption level of different honeycomb specimens quantitatively. The shock response curves of six test points mounted on the platform were recorded with acceleration sensors when the buffer was impacted by a bullet driven by high pressure gas. The maximum acceleration values in time domain and in specifically spectral domain were obtained based on spectral analysis. Comparing the data of combined aluminium honeycomb buffer and single aluminium honeycomb buffer, conclusion can be obtained that shock absorbing characteristic of combined aluminium honeycomb buffer is better. Furthermore, compression properties of three kinds of buffers were tested under quasi-static state. The energy absorption parameters were calculated. The results show suitable combined aluminium honeycomb buffer can smooth the stress and lower the energy applied to the testing platform.