Analytical and experimental studies on ballistic impact behavior of 2D woven fabric composites
Analytical and experimental studies on ballistic impact behavior of 2D woven fabric composites
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二维机织物复合材料弹道冲击行为的分析和实验研究
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
N. Naik
中科院分区：
文献类型：
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作者：
KS Pandya;C. V. Kumar;N. Nair;Ps Patil;N. Naik
提出了一种预测二维机织织物复合材料层合板受刚性圆柱形弹丸冲击的弹道性能的广义解析公式。该公式适用于各种厚度的层压板。该公式是基于应力波的传播和能量平衡之间的弹丸和复合材料目标。在弹道撞击事件期间，弹丸损失的能量通过各种损伤和能量吸收机制被目标吸收，例如弹丸正下方目标的压缩、撞击区周围区域的压缩、剪切堵塞、纱线/层的拉伸和拉伸破坏。由主纱组成的区域中的纱线/层、由副纱组成的区域中的纱线/层的拉伸变形，靶材背面的锥形变形、分层、基体开裂以及弹丸与靶材之间的摩擦。提出的公式同时考虑了锥形变形过程中的剪切堵塞和拉伸破坏。提出了弹道冲击性能评估的求解程序。对二维平纹编织E-玻璃纤维/环氧树脂和二维8H缎纹编织T300碳纤维/环氧树脂两种复合材料试样的弹道冲击性能进行了实验验证。给出了各种机构的弹道极限速度和能量吸收的典型结果。
A generalized analytical formulation is presented for the prediction of ballistic impact behavior of 2D woven fabric composite laminates impacted with a rigid cylindrical projectile. The formulation is valid for a wide range of laminate thicknesses. The formulation is based on stress wave propagation and energy balance between the projectile and the composite target. During the ballistic impact event, the energy lost by the projectile is absorbed by the target through various damage and energy absorbing mechanisms such as compression of the target directly below the projectile, compression in the region surrounding the impacted zone, shear plugging, stretching and tensile failure of yarns/layers in the region consisting of primary yarns, tensile deformation of yarns/layers in the region consisting of secondary yarns, conical deformation on the back face of the target, delamination, matrix cracking, and friction between the projectile and the target. The formulation presented considers both shear plugging and tensile failure during conical deformation. Solution procedure for the evaluation of ballistic impact performance is presented. Experimental validation is performed on the ballistic impact behavior of two types of composite specimens: 2D plain weave E-glass/epoxy and 2D 8H satin weave T300 carbon/epoxy. Typical results on ballistic limit velocity and energy absorbed by various mechanisms are presented.