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CRUSHING BEHAVIOUR OF ALUMINIUM HONEYCOMBS UNDER IMPACT LOADING |
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| Authors: | Han Zhao G?rard Gary |
| Affiliation: | 1. Department of Mechanical and Industrial Engineering, Northeastern University, Boston, MA, USA;2. Department of Mechanical Engineering, Qatar University, Doha, Qatar;1. State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha 410082, China;2. School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW 2006, Australia;3. School of Engineering and Information Technology, The University of New South Wales, Canberra, ACT 2600, Australia;1. Department of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, UK;2. AWE, Aldermaston, Reading, Berkshire, UK |
| Abstract: | Understanding the crushing behaviour of honeycombs under dynamic loading is useful for crash simulations of vehicles and for design of impacting energy absorbers. Available experimental techniques, however, are not always able to provide satisfactory precision for tests on honeycombs under impact loading. This paper presents a new application of the Split Hopkinson Pressure Bar (SHPB) for testing honeycombs. Viscoelastic bars are used to improve the accuracy of measurements, and a generalised two-strain measurement method is applied to obtain a sufficient measurable maximum crush (up to 80%). Original experimental data (especially in the in-plane crushing directions) under impact loading are then reported. Differences between quasi-static and dynamic results are discussed. |
| Keywords: | Honeycomb structures Aluminum Compressive strength Impact testing Structural analysis Dynamic loads Viscoelasticity Strain measurement Impact loads Split Hopkinson pressure bar (SHPB) |
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