Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/136809
Title: Simulation of dwell-to-penetration transition for SiC ceramics subjected to impact of tungsten long rods
Authors: Yuan, Jianming
Tan, Geoffrey Eng Beng
Goh, Wei Liang
Keywords: Engineering::Materials
Issue Date: 2017
Source: Yuan, J., Tan, G. E. B., & Goh, W. L. (2017). Simulation of dwell-to-penetration transition for SiC ceramics subjected to impact of tungsten long rods. 14th Armor Ceramics Symposium - 40th International Conference on Advanced Ceramics and Composites. doi:10.1002/9781119321682.ch8
Abstract: For a ceramic armour impacted by a long rod projectile, increasing the dwell-to-penetration transition velocity significantly improves its ballistic performance, whereas it can be achieved by prestressing of the ceramic or placing a buffer over the impact surface. In this paper, numerical simulation using the AUTODYN hydrocode is conducted to investigate how dwell-to-penetration transition is affected by the radial prestress and the presence of a buffer. Taking account of the pressure-dependent strength of SiC ceramics, it is found that distribution of hydrostatic pressure and equivalent stress in the ceramics controls damage initiation and dwell to-penetration transition. Ceramic damage initiates from the edge of the projectile and then forms a damaged zone in front of the projectile. Compared to the radial prestress, the buffer more effectively suppresses damage initiation to fulfil interface dwell at a higher transition velocity.
URI: https://hdl.handle.net/10356/136809
DOI: 10.1002/9781119321682.ch8
Rights: © The American Ceramic Society 2017. This is the author's version of the work. It is posted here by permission of The American Ceramic Society for personal use, not for redistribution. The definitive version was published in the Journal of the American Ceramic Society, volume 37, issue 4, pages 65-73. https://doi.org/10.1002/9781119321682.ch8
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Conference Papers

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