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Auxeticity windows for composites

机译:复合材料的气孔窗

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摘要

Materials with negative Poisson ratios are known to have high shear rigidities - a useful property for many types of structural and functional materials. To improve upon relatively low Young's modulus of existing auxetics, one may consider embedding such components in an elastic material with sufficiently high modulus. We show theoretically that such composite materials do exhibit auxeticity when the inclusion volume fraction exceeds a critical value and the ratio of Young's modulus of inclusion to that of a matrix falls within a definite interval. The existence of these auxeticity windows, once verified experimentally, opens up a new avenue of auxetics research. (C) 1998 Elsevier Science B.V. All rights reserved. [References: 31]
机译:已知具有负泊松比的材料具有高的剪切刚度-对许多类型的结构和功能材料都非常有用。为了改善现有的膨胀剂的相对较低的杨氏模量,可以考虑将这些部件嵌入具有足够高模量的弹性材料中。我们从理论上证明,当夹杂物体积分数超过临界值且杨氏夹杂物模量与基体的杨氏模量之比落在确定的范围内时,此类复合材料确实表现出膨胀性。一旦通过实验验证,这些膨胀性窗口的存在就为膨胀性研究开辟了一条新途径。 (C)1998 Elsevier Science B.V.保留所有权利。 [参考:31]

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