Numerical investigation on the role of out-of-plane fiber direction on impact resistance of composite target

被引:3
|
作者
Ramagiri, Bhaskar [1 ]
Yerramalli, Chandra Sekher [1 ,2 ]
机构
[1] Indian Inst Technol, Dept Aerosp Engn, Mumbai, India
[2] Indian Inst Technol, Dept Aerosp Engn, Mumbai 400076, Maharashtra, India
关键词
Impact performance of composite targets; fiber orientation; confinement effect on impact performance; UD composites under impact; HIGH-VELOCITY IMPACT; BALLISTIC IMPACT; COMPRESSIVE STRENGTH; WOVEN FABRICS; FAILURE; DAMAGE; PERFORMANCE; MECHANISMS; BEHAVIOR; MODEL;
D O I
10.1177/07316844231158176
中图分类号
TB33 [复合材料];
学科分类号
摘要
In high-velocity projectile impacts, the contact duration is very short and the response of the target is governed by the local behavior of the material in the impact zone. On impact, a compressive stress wave is generated in the target, which travels in the thickness direction. This compressive stress wave plays a significant role in the failure of thick composite targets. In conventional laminates, the out-of-plane (transverse) compressive strength of composite resists the generated compressive stress wave which is not efficient since out-of-plane compressive strength is significantly lower than the fiber direction strength value. In the current numerical study, a non-conventional approach has been adopted by orienting the fibers in the impact direction to utilize the high compressive strength in the fiber direction to resist the projectile impact. In this regard, unidirectional composite rod segments are considered with fiber aligned in the projectile impact direction. The resulting effect on the impact energy absorption and the overall mechanical impact response is numerically studied and compared with conventional woven fabric laminates. Several configurations of these unidirectional fiber rod segments and the role of lateral confinement are also studied to understand their effect on the impact energy absorption. The numerical simulation results indicate an advantage for the proposed arrangement of composite (segments) rods with fiber in impact direction over the conventional woven fabric laminates.
引用
收藏
页码:169 / 182
页数:14
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