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首页> 外文期刊>International Journal of Solids and Structures >The uniaxial tension of particulate composite materials with nonlinear interface debonding
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The uniaxial tension of particulate composite materials with nonlinear interface debonding

机译:具有非线性界面剥离的颗粒复合材料的单轴张力

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Debonding of particle/matrix interfaces can significantly affect the macroscopic behavior of composite material. We have used a nonlinear cohesive law for particle/matrix interfaces to study interface debonding and its effect on particulate composite materials subject to uniaxial tension. The dilute solution shows that, at a fixed particle volume fraction, small particles lead to hardening behavior of the composite while large particles yield softening behavior. Interface debonding of large particles is unstable since the interface opening (and sliding) displacement(s) may have a sudden jump as the applied strain increases, which is called the catastrophic debonding. A simple estimate is given for the critical particle radius that separates the hardening and softening behavior of the composite. (c) 2006 Elsevier Ltd. All rights reserved.
机译:颗粒/基体界面的脱粘会显着影响复合材料的宏观行为。我们对粒子/基体界面使用了非线性内聚定律,以研究界面剥离及其对单轴张力下颗粒复合材料的影响。稀溶液表明,在固定的颗粒体积分数下,小颗粒会导致复合材料的硬化行为,而大颗粒会产生软化行为。大颗粒的界面剥离是不稳定的,因为随着施加应变的增加,界面的开口(和滑动)位移可能会突然跳动,这称为灾难性剥离。对临界颗粒半径给出了一个简单的估计,该半径将复合材料的硬化和软化行为分开了。 (c)2006 Elsevier Ltd.保留所有权利。

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