Initiation of adiabatic shear failure in a clamped circular plate struck by a blunt projectile |
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| Affiliation: | 1. Institute of Structural Mechanics, China Academy of Engineering Physics, P.O. Box 919-414, Mianyang, Sichuan 621900, PR China;2. Department of Mechanical, Aerospace and Manufacturing Engineering, UMIST, P.O. Box 88, Manchester M60 1QD, UK;3. Protective Technology Research Centre, School of Civil and Environmental Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, Singapore;1. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China;2. Beijing Key Laboratory of Emission Surveillance and Control for Thermal Power Generation, School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China;3. Key Laboratory of Condition Monitoring and Control for Power Plant Equipment (Ministry of Education), North China Electric Power University, Beijing 102206, China;4. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China;5. College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249, China;1. School of Mechanical Engineering College of Engineering, University of Tehran, Tehran, 14399-57131, Iran;2. School of Mechanical Engineering College of Engineering, University of Tehran, Tehran, 14399-57131, Iran;1. State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi''an Jiaotong University, Xi''an 710049, PR China;2. MOE Key Laboratory for Multifunctional Materials and Structures, Xi''an Jiaotong University, Xi''an 710049, PR China;3. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, PR China;4. Key Laboratory of Intense Dynamic Loading and Effect, Northwest Institute of Nuclear Technology, Xi''an 710024, PR China;5. School of Biological Science & Medical Engineering, Southeast University, Nanjing 210016, PR China;6. School of Mechanical Engineering, Xi''an Jiaotong University, Xi''an 710049, PR China;7. Nanjing Center for Multifunctional Lightweight Materials and Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, PR China |
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| Abstract: | This paper presents an analytical model for studying the material failure in shear hinges formed during the dynamic plastic response of a circular plate under projectile impact. Analytic solutions for the ballistic perforation performance of a fully clamped circular plate struck by a blunt projectile are obtained. It takes into account both the global response (plate bending) and the localized shear. Based on the estimations of the shear strain and the size of shear hinge, condition for the initiation of an adiabatic shear band is formulated. The effectiveness of the present model is demonstrated by reasonable agreement between the theoretical predictions and the available experimental data for the perforation of Weldox 460E steel plates. |
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