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Prediction of impact damage on sandwich composite panels
Affiliation:1. College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, China;2. Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong, China;1. School of Automotive Engineering, Harbin Institute of Technology, Weihai, Shandong 264209, PR China;2. State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, PR China;1. Department of Aerospace and System Engineering, Research Center for Aircraft Parts Technology, Gyeongsang National University, 900 Gajwa-dong, Jinju, Gyeongnam 660-701, Republic of Korea;2. School of Mechanical Engineering, Research Center for Aircraft Parts Technology, Gyeongsang National University, 900 Gajwa-dong, Jinju, Gyeongnam 660-701, Republic of Korea;1. School of Aeronautics and Astronautics, Shanghai Jiao Tong University, 800 Dongchuan RD. Minhang District, Shanghai 200240, China;2. School of Engineering, University of Liverpool, Brownlow Street, Liverpool L69 3GQ, UK
Abstract:Sandwich structures are extensively employed in the aerospace and automobile industries. The understanding of their behaviour under impact conditions is extremely important for the design and manufacturing of these engineering structures since impact problems are directly related to structural integrity and safety requirements. This paper investigates the damage behaviour of composite sandwich panels with aramid paper honeycomb (NOMEX) and polyetherimide (PEI) foam cores under transverse impacts at high velocities. A numerical model was developed using the dynamic explicit finite element (FE) structure analysis program PAM-CRASH. For both sandwich structures numerical analysis reproduces physical behaviour observed experimentally in high velocity impact tests.
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