A study on the evaluation model for perforation failure of steel plates subjected to the impact by a flat-nose projectile
A study on the evaluation model for perforation failure of steel plates subjected to the impact by a flat-nose projectile
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平头弹冲击钢板穿孔破坏评价模型研究
DOI：
10.11532/structcivil.68a.907
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
堤 成一郎
中科院分区：
文献类型：
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作者：
濵田 匠李;別府 万寿博;市野 宏嘉;堤 成一郎
本研究探讨钢板穿孔破坏之评估模式。使用6.0 kg直径为50 mm的平头弹进行了撞击试验。弹丸以40- 100 m/s的冲击速度分别撞击6 mm、9 mm和12 mm厚的SS 400钢板。试验结果表明，钢板的穿孔仅在撞击点附近引起破坏。通过数值模拟研究了钢板的变形机理和穿孔破坏。有限差分法模拟了实验结果。基于试验和数值计算结果，提出了一个评估模型，通过模拟塑性铰和伸长行为。通过与试验和数值计算结果的比较，讨论了该模型的有效性。
This study investigated an evaluation model for perforation failure of steel plates. Impact tests were conducted by using a 6.0 kg flat-nose projectile with a diameter of 50mm. The projectile collided with 6mm, 9mm and 12mm thick SS400 steel plates at impact velocities of 40-100m/s. Test results revealed that the perforation of the steel plates induced failure only at vicinity of impact point. Numerical simulation was conducted to investigate the deformation mechanism and perforation failure of the steel plates. Finite Difference Analysis simulated the experimental results. Based on the test and numerical results, an evaluation model was proposed by modeling plastic hinges and elongation behavior. Validation of the proposed model was discussed by comparing with test and numerical results.