کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
779247 1464067 2015 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pre-stress effect on confined ceramic armor ballistic performance
ترجمه فارسی عنوان
اثر پیش از استرس بر عملکرد بالستیک زره پوش سرامیک
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی


• Numerical modeling of pre-stressed confined SiC is performed and validated against the experimental measurements.
• Effect of different pre-stress types on ballistic behavior of armor is explored.
• Effect of “pressure at initial failure point” on ballistic behavior of SiC is studied.
• Dwell–penetration transition velocity for different pre-stressed SiC targets is found.

A numerical technique for the simulation of pre-stressed confined ceramic targets under long rod projectile (LRP) impact, using explicit software, AUTODYN®, is proposed. The proposed model is validated by comparing the ballistic performance results with the available experimental data in the literature. Impact simulations of the confined ceramic targets with different pre-stress conditions, namely radial, axial and hydrostatic, as well as without pre-stress for benchmarking are reported. The effects of these different pre-stress conditions on the ballistic performance of the ceramic target are explored. The upper limits of transition velocity for the targets of different pre-stress conditions are obtained. It is shown that dwell of the LRP on the ceramic interface is influenced by the pressure, obtained from pre-stressing, at the initial failure position in SiC target. It is shown that pressure at the initial failure position increases linearly with the upper limit of transition velocity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Impact Engineering - Volume 84, October 2015, Pages 159–170
نویسندگان
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