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首页> 外文期刊>Physica status solidi, B. Basic research >Modelling the influence of the orientation and fibre reinforcement on the Negative Poisson's ratio in composite laminates
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Modelling the influence of the orientation and fibre reinforcement on the Negative Poisson's ratio in composite laminates

机译：模拟取向和纤维增强对复合材料层压板的负泊松比的影响

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摘要

The variation of through-thickness Poisson's ratio with fibre type and orientation has been investigated using a specially developed Fortran program. Glass fibre/epoxy resin composites were always found to be conventional, but negative Poisson's ratio values of up to 13 = -0.746 were produced over certain orientation angles for Kevlar and carbon reinforcements. This underlines the need for anisotropic pre-preg material. A range of [±β/±θ]s angles were investigated for carbon fibre laminates and it was found that auxetic behaviour could be generated for up to 45° All the findings of this work have extended the range of laminates which can be engineered to be auxetic either by material (i.e. Kevlar as well as carbon) or by orientation (i.e. by introducing further β layers other than the 0°and 90°previously investigated).
机译：使用专门开发的Fortran程序，研究了整个厚度的泊松比随纤维类型和取向的变化。人们总是发现玻璃纤维/环氧树脂复合材料是常规的，但是对于某些凯夫拉尔纤维和碳纤维增强材料，在一定的定向角上产生的负泊松比值高达13 = -0.746。这强调了对各向异性预浸料的需求。研究了碳纤维层压板的[±β/±θ] s角度范围，发现在最高45°时可产生拉力行为。这项工作的所有发现扩大了层压板的范围，可以设计用于通过材料（即凯夫拉尔纤维和碳纤维）或定向（即通过引入除先前研究的0°和90°以外的其他β层）引起的膨胀。

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