Characterisation of aluminium matrix syntactic foams under drop weight impact |
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| Affiliation: | 1. School of Engineering, University of Liverpool, Brownlow Hill, Liverpool L69 3GH, United Kingdom;2. Aerospace Research and Innovation Center (ARIC), Khalifa University of Science, Technology and Research (KUSTAR), PO Box 127788, Abu Dhabi, United Arab Emirates;1. AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China;2. State Key Laboratory of Turbulence and Complex System, College of Engineering, Peking University, Beijing 100871, China;3. Department of Mechanical Engineering, Nanjing University of Technology, Nanjing, Jiangsu Province 211816, China;4. Department of Mathematics, Jinling Institute of Technology, Nanjing, Jiangsu 211169, China;1. Department of Mechanical and Aerospace Engineering, Polytechnic School of Engineering, New York University, Brooklyn, NY, USA;2. ISIS Sensorial Materials Scientific Centre, University of Bremen, Germany;3. Fraunhofer Institute for Manufacturing Technology and Advanced Materials (IFAM), Bremen, Germany;1. Department of Aerospace Engineering, Faculty of Engineering, UPM, 43400, UPM Serdang, Selangor Darul Ehsan, Malaysia;2. Aerospace Malaysia Innovation Centre (944751-A), Prime Minister’s Department, MIGHT Partnership Hub, Jalan Impact, 63000 Cyberjaya, Selangor, Malaysia;3. Laboratory of Biocomposite Technology, Institute of Tropical Forestry and Forest Products (INTROP), UPM, 43400, UPM Serdang, Selangor Darul Ehsan, Malaysia;1. Department of Materials Science and Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Bertalan Lajos utca 7., Budapest 1111, Hungary;2. MTA–BME Research Group for Composite Science and Technology, Műegyetem rakpart 3., Budapest 1111, Hungary |
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| Abstract: | It is a challenging task to develop a lightweight, and at the same time, strong material with high energy absorption for applications in military vehicles, which are able to withstand impact and blast with minimum injury to occupants. This paper presents a study on aluminium matrix syntactic foams as a possible core material for a protection system on military vehicles. Experimental work was first carried out which covers sample preparation through pressure infiltration and impact tests on aluminium matrix syntactic foams manufactured. Numerical models were then developed using commercial finite element code ABAQUS/Explicit to simulate the dynamic behaviour of the foam. The effect of strain rate on their compressive behaviour was investigated as these properties are vital in terms of the applications of these materials. Characterisation of the foam behaviour under low velocity impact loading and an identification of the underlying failure mechanisms were also carried out to evaluate the effective mechanical performance. It was found that samples subjected to drop weight impact offered a 20–30% higher plateau stresses than those of the samples subjected to quasi-static compression loading. The degree of correlation between the numerical simulations and the experimental results has been shown to be reasonably good. |
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| Keywords: | Metal matrix syntactic foam Drop weight hammer Strain rate Finite element |
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