A constitutive-microdamage model to simulate hypervelocity projectile-target impact,material damage and fracture |
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| Institution: | 1. Instituto de Investigaciones Científicas y Técnicas para la Defensa, Zufriategui 4380 Villa Martelli, Buenos Aires Argentina;2. Universidad Tecnológica Nacional, Facultad Regional Buenos Aires, Medrano 951 Ciudad Autónoma de Buenos Aires, Argentina;3. Centro de Procesamiento de Señales e Imágenes, Facultad Regional Buenos Aires, Medrano 951 Ciudad Autónoma de Buenos Aires, Argentina;1. J. Mike Walker ‘66 Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843, United States;2. Department of Engineering Mechanics, South China University of Technology, Guangzhou, Guangdong 510640, China |
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| Abstract: | A set of constitutive-microdamage equations are presented that can model shock compression and the microdamage and fracture that can evolve following hypervelocity impact. The equations are appropriate for polycrystalline metals. For impact at a projectile velocity of 6.0 km/s, numerical simulations are preformed that describe the impact of spherical soda-lime glass projectiles with aluminum 1100 rectangular target plates. Three ratios of the projectile diameter to the target thickness are chosen for the simulations, providing a wide range of damage features. The simulated impact damage is compared with experimental damage of corresponding test specimens, illustrating the capability of the model. |
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