Nondimensional simulation of influence of toughness of interface on tensile stress-strain behavior of unidirectional microcomposite
Nondimensional simulation of influence of toughness of interface on tensile stress-strain behavior of unidirectional microcomposite
复制标题
界面韧性对单向微复合材料拉伸应力应变行为影响的无量纲模拟
DOI：
10.1016/s1359-835x(00)00190-1
复制
发表时间：
2001
影响因子：
8.7
通讯作者：
B. Fiedler
中科院分区：
文献类型：
--
作者：
Shojiro Ochiai;M. Hojo;K. Schulte;B. Fiedler
为了描述复合材料的应力-应变曲线、杨氏模量随外加应变的变化以及断裂形态，提出了一种结合蒙特卡罗模拟程序的无量纲剪切滞后法，该方法统计了复合材料中构件（纤维和基体）断裂、界面脱粘等损伤的发生情况；考虑了损伤和未损伤部分之间的力学相互作用以及损伤几何形状和位置随外加应变增加的变化。将该方法应用于不同界面韧性的微复合材料，得到了损伤发生的顺序和位置、应力-应变曲线和断口形貌随界面韧性变化的变化规律。
For description of the stress–strain curve, variation of Young's modulus with increasing applied strain and fracture morphology of composite, a nondimensional shear lag method combined with a Monte Carlo simulation procedure was proposed, in which the statistics of the occurrence of damages such as breakage of components (fiber and matrix) and debonding of interface, mechanical interactions among the damaged and undamaged portions and variation of the geometry of location of the damages with increasing applied strain, are incorporated. The proposed method was applied to microcomposite with different interfacial toughness, and variations of the order and location of occurrence of damages, stress–strain curve and fracture morphology with varying interfacial toughness were shown.