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冲击压缩下玻璃样品后自由表面速度的过冲现象
Velocity Overshoot of Rear Free-surfaces of Glass under Impact
查看参考文献9篇
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文摘
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实验发现当飞片碰撞玻璃样品产生的冲击载荷超过一定值后，玻璃样品后自由表面速度时程曲红上有“过冲现象”，即速度上升到最大值后，立即开始下降，其时间的开始部分类似于三角波。通过高速摄影和VISAR等测试手段对这一现象进行了较系统的研究，发现其与玻璃样品后自由表面附近的破碎有关，建立了描述这一破坏现象的损伤深化方程，并进行了数值模拟。计算结果和实验结果吻合，表明对这个现象的解释是合理的。 |
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其他语种文摘
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When glass samples were impacted by flyers, the velocity of its rear free-surface firstly increased to its maximum, and then began to decrease. The phenomenon was investigated in details using VISAR and high-speed photography in this work. The experimental results revealed that the overshoot was suggested to be connected with fragmentation (destruction wave) on rear free surface of glass samples during shock wave reflection. A theoretical model was suggested to explain this phenomenon, and a related numerical simulation was carried out too. The results from the simulation with the suggested model is in good agreement with the experimental results. This demonstrates that the model about the overshoot is reasonable. |
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来源
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爆炸与冲击
,2002,22(1):72-78 【核心库】
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关键词
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过冲现象
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冲击波
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破坏波
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失效波
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地址
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1.
中物院流体物理研究所, 四川, 绵阳, 621900
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中国科学院力学研究所, 北京, 100080
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1001-1455 |
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学科
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力学 |
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基金
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国家自然科学基金
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中国工程物理研究院基金
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文献收藏号
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CSCD:955341
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参考文献 共
9
共1页
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1.
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CSCD被引
1
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2.
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冲击压缩下玻璃等脆性材料中失效波的实验和理论研究,2000
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CSCD被引
3
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3.
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Key Engineering Materials,2000,183:343-348
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CSCD被引
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4.
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5.
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6.
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CSCD被引
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CSCD被引
2
次
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