纺织结构增强复合材料冲击实验子弹速度分析

通过非线性有限元软件（ABAQUS）建立了子弹冲击复合材料模型，将子弹入射的起始条件和实际条件设置成一致，分析了子弹剩余速度、加速度的变化及子弹冲击后能量值的损失情况。结果表明，子弹入射速度与子弹剩余速度的理论值和实验值均呈线性关系；当子弹入射的冲击速度越高时，子弹速度下降曲线的初始阶段的直线斜率越大，子弹冲击后加速度绝对值的峰值也越大；子弹冲击后能量损失模拟的计算值与实验值基本一致。

Analysis of Bullet Velocity for Textile Fabric Reinforced Composites under Ballistic Impact

A ballistic impact model was established for textile fabric reinforced composites by using an ABAQUS software to analyze the residual velocity, variation of acceleration and energy loss when a bullet passed through the composites, in which the initial conditions for the incident bullet was set in accordance with the actual one. The results indicated that both the theoretic and experiment values for the residual velocity kept a linear relationship with its incident velocity. The higher the incident velocity, the greater the slope of plot of bullet velocity vs. time at the initial stage of incident bullet, and the greater was the absolute value of acceleration at peak. The calculated values obtained from the simulation of energy loss for the ballistic impact was in good agreement with experimental ones.