Computational modeling of the penetration response of a high-purity ceramic |
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| Affiliation: | 1. School of Mechanical Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei Street, Nanjing, Jiangsu 210094, China;2. Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati, 2851 Woodside Dr., Cincinnati, OH 45221, USA;3. Key Laboratory of Contemporary Design and Integrated Manufacturing Technology, Ministry of Education, Northwestern Polytechnical University, 127 Youyi Road, Xi''an, Shaanxi 710072, China;1. French-German Research Institute of Saint-Louis (ISL), 5 rue du General Cassagnou, 68301 Saint-Louis, France;2. Laboratory of Mechanics, Biomechanics, Polymers and Structures (LaBPS), National Engineering School of Metz (ENIM), Route d’Ars Laquenexy, 57000 Metz, France |
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| Abstract: | This paper describes computational modeling of the penetration response of a high-purity ceramic, namely the AD-99.5 alumina. This material is the most widely investigated ceramic, and extensive materials testing and ballistic data are available. The model development is based on constitutive relationships inferred from bar impact and plate impact data. The model is then incorporated into the EPIC Lagrangian finite element code. A novel element removal scheme for ceramics is presented, and the code is then used to investigate the penetration response of AD-99.5 alumina in the depth of penetration and semi-infinite configurations. The computations are found to be in excellent agreement with the experimental results. The interface defeat problem is also investigated numerically, and the results are used to suggest an explanation for interface defeat. |
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