Theoretical and experimental study of foam-filled lattice composite panels under quasi-static compression loading |
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| Affiliation: | 1. College of Civil Engineering, Nanjing University of Technology, Nanjing, China;2. Advanced Engineering Composites Research Center, Nanjing University of Technology, Nanjing, China;3. Dept. of Mechanical Engineering, University of New Orleans, New Orleans, LA 70124, USA;1. School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;2. Department of Naval Architecture Engineering, Naval University of Engineering, Wuhan 430033, China;3. School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;1. Department of Civil and Environmental Engineering, The University of Auckland, Auckland Mail Centre, Private Bag 92019, Auckland 1142, New Zealand;2. Department of Mechanical Engineering, The University of Auckland, Auckland Mail Centre, Private Bag 92019, Auckland 1142, New Zealand;1. School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;2. Department of Naval Architecture Engineering, Naval University of Engineering, Wuhan 430033, China;3. School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;1. Key Laboratory for Wind and Bridge Engineering of Hunan Province, College of Civil Engineering, Hunan University, Changsha, 410082, China;2. Department of Civil & Mineral Engineering, University of Toronto, ON M5S 1A4, Canada;3. Key Laboratory of Building Safety and Energy Efficiency (Hunan University), Ministry of Education, Changsha, 410082, China;1. School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China;2. MOE Key Laboratory for Multifunctional Materials and Structures, Xi’an Jiaotong University, Xi’an 710049, China;3. State Key Laboratory for Mechanical Structure Strength and Vibration, Xi’an Jiaotong University, Xi’an 710049, China |
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| Abstract: | In this paper, a simple and innovative foam-filled lattice composite panel is proposed to upgrade the peak load and energy absorption capacity. Unlike other foam core sandwich panels, this kind of panels is manufactured through vacuum assisted resin infusion process rather than adhesive bonding. An experimental study was conducted to validate the effectiveness of this panel for increasing the peak strength. The effects of lattice web thickness, lattice web spacing and foam density on initial stiffness, deformability and energy absorbing capacity were also investigated. Test results show that compared to the foam-core composite panels, a maximum of an approximately 1600% increase in the peak strength can be achieved due to the use of lattice webs. Meanwhile, the energy absorption can be enhanced by increasing lattice web thickness and foam density. Furthermore, by using lattice webs, the specimens had higher initial stiffness. A theoretical model was also developed to predict the ultimate peak strength of panels. |
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| Keywords: | A Glass fibers A Foams B Strength D Mechanical testing |
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