Armoured Vehicles and Tanks Modular Ceramic-Metal Armour [AMA]
Nation of origin: Yohannes
Year of manufacturing and production: 2018
Technology: Real Life Modern Technology
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Introduction
Armoured vehicles and main battle tanks (e.g. Yvernyr, San-Silvacian) have traditionally been manufactured from high strength armour or specially modified plate steel (Bisalloy Armour, 2016). However, advanced ceramic composites have largely replaced steel as non-structural armour materials in some modern combat vehicles (CeramTec GmbH, 2018). Their properties, such as good strength combined with high hardness, make their manipulation ideal for the design of modern armour systems (Bracamonte et al., 2016). But, in some designs this has been limited by their low brittleness and toughness, which limit ballistic performance (Bhatnagar & Asija, 2016). Therefore, in this present NationStates design, ceramics have been joined with both metallic and long fibre reinforced composite backing plates to improve their ballistic performance (Simons et al., 2016).
For this NationStates design, limitation to depth of penetration (DOP) performance has been compared with similar schemes using ANSYS Autodyn: Equations of Motion three dimensional analysis (ANSYS Simulation, 2018) and LS Dyna hydrocode simulation. North Atlantic Treaty Organisation Standard 60O oblique and normal testing parameter have been used. Technical data for the ceramic and metal composition have been acquired by using the Johnson-Cook and Johnson-Holmquist (JH-2) constitutive models (Johnson–Holmquist damage model).
With ongoing research and development, combined ceramic and metal modules design potentially allows armour system to face not just present impact velocities ranging from 1,500 to 1,800 metres per second, but also more lethal future impact velocities, which can range from 2,500 to 3,000 m/s (Cottrell et al., 2003).
References
- Bisalloy Steels Group Limited (2016). Bisalloy Armour: Armour Plate Steel. Retrieved from https://www.bisalloy.com.au/site/Defaul ... ochure.pdf
CeramTec GmbH. (2018). Ceramic Materials for light-weight Ceramic Polymer Armor Systems. Retrieved from https://www.ceramtec.com/files/et_armor_systems.pdf
Bracamonte, L., Loufty, R., Yilmazcoban, I. K. & Rajan, S. D. (2016). Materials and Electrochemical Research Corporation, Tucson, Arizona, United States of America; Sakarya University, Republic of Turkey; and Arizona State University, Tempe, AZ, United States of America. Design, manufacture, and analysis of ceramic-composite armor: A volume in Woodhead Publishing Series in Composites Science and Engineering (pp. 349-367).
Bhatnagar, N. & Asija N. (2016). Durability of high-performance ballistic composites, Lightweight Ballistic Composites - Military and Law-Enforcement Applications: A volume in Woodhead Publishing Series in Composites Science and Engineering (Second Edition) (pp. 231-283). New Delhi, India: Indian Institute of Technology.
Simons, J. W., Johnsen B. B., Kobayashi T., Shockey D. A. & Rahbek D. B. (2017). Norwegian Defence Research Establishment (FFI), P.O. Box 25, NO-2027 Kjeller, Kingdom of Norway; and the Centre for Fracture Physics, SRI International, 333 Ravenswood Avenue, Menlo Park, CA 94025, United States of America.
Ansys Incorporated (2018). Simulate short duration, severe loadings. Retrieved from https://www.ansys.com/products/structures/ansys-autodyn
Johnson–Holmquist damage model. (2018, May 4). In Wikipedia, The Free Encyclopedia. Retrieved May 4, 2018, from https://en.wikipedia.org/wiki/Johnson%E ... mage_model
Cottrell, M. G, Yu, J. & Owen, D. R. J. (October 2003). International Journal of Impact Engineering: The adaptive and erosive numerical modelling of confined boron carbide subjected to large-scale dynamic loadings with element conversion to undeformable meshless particles. Volume 28, Issue 9, (pp. 1,017-35). Department of Civil Engineering, University of Wales, Swansea, SA2 8PP, UK. Rockfield Software Ltd., Technium, Prince of Wales Dock, Kings Road, Swansea, Wales SA1 8PH, UK.