Numerical investigation on steel fibre reinforced cementitious composite panels subjected to high velocity impact loading |
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| Affiliation: | 1. CSIR-Structural Engineering Research Centre, CSIR Campus, Chennai 600113, India;2. Department of Applied Mechanics, IIT Madras, Chennai 600036, India;1. Structural Integrity Group, Escuela Politécnica Superior, Avenida Cantabria s/n, 09006 Burgos, Spain;2. Civil Engineering Department, University of Burgos, Calle Villadiego s/n, 09001 Burgos, Spain;1. School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, PR China;2. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore;3. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, PR China;1. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;2. Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA;1. Centro Nacional de Investigaciones Metalúrgicas (CENIM-CSIC), Avenida Gregorio del Amo, 8., E-28040 Madrid, Spain;2. National Institute of Biofabrication (INCT-BIOFABRIS), State of University of Campinas (UNICAMP), Campinas, Brazil;3. School of Chemical Engineering, State of University of Campinas (UNICAMP), Campinas, Brazil;4. Faculty of Mechanical Engineering, State of University of Campinas (UNICAMP), Campinas, Brazil;1. National Core Research Center, Pusan National University, Busandaehak-ro 63 beon-gil, Geumjeong-gu, Busan 609-735, Republic of Korea;2. Department of Metallurgical Engineering, Pukyong National University, Sinseon-ro 365 beon-gil, Nam-gu, Busan 608-739, Republic of Korea |
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| Abstract: | Steel fibre reinforced cementitious composite (SFRCC) panels are numerically investigated for their performances under high velocity impact of short projectiles. Numerical responses are obtained using advanced constitutive material model of Riedel–Hiermaier–Thoma (RHT) for cementitious materials and adopting appropriate modelling techniques. Effects of steel fibre volume and the thickness of panels on the impact performance are mainly highlighted in this paper. Various characteristics phenomenon during impact on cementitious composite panels namely, spalling, cracking, scabbing and perforation, are captured which is a difficult task. Scabbing is likely to occur when tensile stresses at the back face of the panel exceed dynamic tensile strength of the material. Various critical aspects in numerical modelling like boundary conditions, material input parameters, and handling severe distortion of the Lagrangian based finite elements are appropriately explained. Design chart is also developed to determine optimum fibre volume and thickness for an impact energy level up to 2.2 kJ. The numerically predicted impact responses are found to corroborate well with experimental results. |
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| Keywords: | High velocity impact Steel fibre reinforcement Cementitious composites RHT constitutive model Short projectiles Axi-symmetric model |
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