冰雹冲击复合材料层合板失效模式分析与数值模拟

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (9) : 150-154.

论文

冰雹冲击复合材料层合板失效模式分析与数值模拟

刘洋; 王富生; 岳珠峰

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The failure model analysis and simulation of hailstone impacting with laminated composite plate

Liu Y; Wang F S; Yue Z F

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摘要

针对复合材料层合板结构，建立了冰雹冲击复合材料层合板的有限元模型，在充分考虑冲击过程中冰雹的流体特性下，给出了冰雹和复合材料层合板的材料模型和损伤准则，利用显式有限元分析工具LS-DYNA研究了不同冰雹冲击速度下复合材料层合板的临界破坏速度和破坏形式。结果表明，文中给出的冰雹、复合材料层合板的材料模型和损伤准则能够合理地再现冰雹冲击复合材料板的过程；复合材料层合板(AS4/8552)在冰雹高速冲击下首先发生的是基体开裂，当冰雹速度到达125m/s时，层合板上表面纤维发生断裂，但在整个冰雹冲击过程中层合板没有发生压缩失效

Abstract

A finite element model of hailstone impacting composite structural has been established according to considering the fluent character of the hailstone adequately. The material models, damage criterions of the hailstone and laminate composite plate have been given in this paper, the critical velocity of the hailstone and damage model to composite plate are investigated by explicit finite element method using LS-DYNA. The analysis and simulation results indicate that: the damage criterions of the hailstone and composite plate given in this paper could present the impacting procedure properly; the primary failure model of the composite plate(AS4/8552) is matrix cracking in the process of hailstone impacting, when the hailstone velocity reaches 125m/s, the fiber breakage will appear on the top face of the composite plate, but the compressive failure never occur in the whole process.