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Postbuckling analysis of tailored composite plates with progressive damage

机译:具有渐进式损伤的定制复合板的屈曲后分析

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摘要

Composite plates can be optimized to maximize their buckling and postbuckling resistance. A simple, piece-wise uniform, stiffness tailoring concept has previously been shown to increase buckling loads and improve postabuckling performance. In the present study, this stiffness tailoring concept is further investigated to determine its usefulness in increasing the ultimate postbuckling failure load of a composite plate. A simple material model is used to describe the material behavior with damage. Various configurations of plates are examined in the finite element postbuckling analysis with progressive damage. The results show that highly tailored composite plates can have ultimate failure loads 3-5 times higher than a corresponding uniform plate.
机译:可以对复合材料板进行优化,以使其屈曲和后屈曲阻力最大化。先前已显示出一种简单的,分段一致的刚度剪裁概念,可以增加屈曲载荷并改善屈曲后的性能。在本研究中,将进一步研究这种刚度定制概念,以确定其在增加复合材料板的最终屈曲破坏载荷后的有效性。一个简单的材料模型用于描述带有损坏的材料行为。在有限元后屈曲分析中对板的各种构造进行了检查,并进行了逐步破坏。结果表明,高度定制的复合材料板的极限破坏载荷是相应均匀板的3-5倍。

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