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首页> 外文期刊>Composite Structures >Transverse impact behavior and energy absorption of three-dimensional orthogonal hybrid woven composites
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Transverse impact behavior and energy absorption of three-dimensional orthogonal hybrid woven composites

机译：三维正交混杂编织复合材料的横向冲击行为和能量吸收

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摘要

The transverse impact behaviors of three-dimensional (3D) orthogonal hybrid woven fabric composites were tested on a modified split Hopkinson pressure bar (SHPB) apparatus. The load-displacement curves of the composites in transverse impact were obtained to analyze the strain rate sensitivity of energy absorption. It was found that energy absorption of the composites increases with the impact velocity (i.e., strain rate). The failure modes under quasi-static transverse loading are tensile failure on back side and compressive failure on the front side, while those in transverse impact are matrix cracking, fiber breakage and fiber pull-out. The 3D orthogonal woven composites have the same failure mode in the warp and weft directions. There is no delamination for the 3D orthogonal woven composites under transverse impact as observed in laminated composites.
机译：在改进的霍普金森压力棒（SHPB）装置上测试了三维（3D）正交混杂机织物复合材料的横向冲击行为。获得了复合材料在横向冲击下的载荷-位移曲线，以分析能量吸收的应变速率敏感性。发现复合材料的能量吸收随冲击速度（即应变速率）增加。准静态横向载荷作用下的破坏模式是背面的拉伸破坏和正面的压缩破坏，而横向冲击的破坏模式是基体开裂，纤维断裂和拉出。 3D正交编织复合材料在经向和纬向具有相同的破坏模式。如层压复合材料中观察到的那样，在横向冲击下3D正交编织复合材料没有分层。

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