A model incorporating damage evolution to predict the penetration behaviour of a ceramic target subjected to the long projectile impact

Wang, Z. and Li, P. (2020) A model incorporating damage evolution to predict the penetration behaviour of a ceramic target subjected to the long projectile impact. International Journal of Impact Engineering, 135, 103393. (doi: 10.1016/j.ijimpeng.2019.103393)

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Predicting the ballistic performance of a ceramic armour composite system requires the accurate constitutive formulation of the ceramic target material. In this study, the analytical spherical cavity expansion model was modified to simulate the penetration process of a ceramic target impacted by a long projectile, and then validated by the data in the literature. Specifically a damage evolution parameter that characterises the modulus degradation in the ceramic was proposed and incorporated into the model. It was found that the prediction is more accurate when the model includes damage evolution. Parametric modelling further reveals that the properties of the projectile and target materials have a significant effect on the penetration response. The target resistance is sensitive to the damage evolution, especially in the ceramic of higher dynamic compressive strength and lower tensile strength. The modified model enables the selection of target materials for penetration resistance in terms of not just strength but also toughness.

Item Type:Articles
Additional Information:The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (11802028), the China Postdoctoral Science Foundation Grant (2019M650502) and the Academic Research Fund (AcRF) Tier 1 by Ministry of Education in Singapore. ZW also thanks the Nanyang Technological University (NTU) Research Student Scholarship for his PhD study during which this work was carried out.
Glasgow Author(s) Enlighten ID:Li, Dr Peifeng
Authors: Wang, Z., and Li, P.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:International Journal of Impact Engineering
ISSN (Online):1879-3509
Published Online:20 September 2019
Copyright Holders:Copyright © 2019 Elsevier Ltd.
First Published:First published in International Journal of Impact Engineering 135:103393
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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