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Fragmentation of Composite Material Plates Submitted to Impact Loading: Comparison between Numerical and Experimental Results

机译:冲击载荷作用下复合材料板的破碎:数值与实验结果的比较

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摘要

Composite structures absorb energy during crash via fragmentation. This differs substantially from metallic structures where energy is absorbed by large plastic deformations developed during structural collapse. Fragmentation occurs locally by means of different simultaneous and complementary Mechanisms related to the non-homogeneous nature of the composite material. Matrix failures Under both traction and compression, and fibres failure in traction may occur in the material That constitutes each single lamina. Moreover in a composite material plate consisting of more Than one lamina, laminate failure occurs when they all fail at some location, so that material Can no longer carry the external loads at this location.
机译:复合结构在碰撞过程中会通过碎片吸收能量。这与金属结构大不相同,在金属结构中,能量被结构坍塌过程中产生的大塑性变形吸收。碎裂是通过与复合材料的非均质性质有关的不同同时发生和互补发生的机制而发生的。基体破坏在牵引力和压缩力的共同作用下,纤维的牵引力破坏可能发生在构成每个单个薄片的材料中。而且,在由一个以上的薄片组成的复合材料板中,当层压板全部在某个位置失效时,就会发生层压板失效,因此材料在该位置不再能够承受外部载荷。

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