Approximate Solution of Interactions among Spatially Distributed Broken Fiber, Matrix and Interface in the Progress of Interfacial Debonding in Multifilamentary Unidirectional Composites.
Approximate Solution of Interactions among Spatially Distributed Broken Fiber, Matrix and Interface in the Progress of Interfacial Debonding in Multifilamentary Unidirectional Composites.
复制标题
多丝单向复合材料界面脱粘过程中空间分布断裂纤维、基体和界面之间相互作用的近似解。
DOI：
10.1299/jsmea.43.53
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
M. Hojo
中科院分区：
文献类型：
--
作者：
Shojiro Ochiai;Mototsugu Tanaka;M. Hojo
为了描述单向复合材料界面剥离、纤维与基体断裂等细观现象与宏观应力-应变曲线的关系，提出了一种二维模型的近似无量纲求解方法。将该方法应用于几个不同种类和位置的断裂构件实例，揭示了以下特征：(a)纤维断裂诱发的剥离发生在比基体断裂诱发的更低的应变下；(b)在大量断裂纤维和基体存在的情况下，力学作用加速了整体脱粘；(c)整体脱粘的进展取决于破碎构件的种类和破碎构件与脱粘界面的几何位置；(d)应力-应变曲线显示，由于脱粘的进展，应力下降。作为该方法的扩展应用，提出了一种无维蒙特卡罗模拟方法来描述复合材料的行为，其中断裂部件和脱粘界面的数量和位置随应变的增加而变化。
In order to describe the relationship of mesoscopic phenomena of interfacial debonding and breakage of fiber and matrix to the macroscopic stress-strain curve of unidirectional composites, an approximate nondimensional solution method was presented using a two-dimensional model. By applying this method to several examples in which the species and locations of broken components were varied, the following features were revealed: (a) fiber-breakage-induced debonding occurs at a lower strain than the matrix-breakage-induced one; (b) the overall debonding is hastened due to mechanical intractions under the existence of many broken fibers and matrices; (c) the progress of overall debonding is dependent on the species of the broken components and on the geometrical location of broken components and debonded interfaces;and (d) the stress-strain curve shows drops in stress due to the progress of debonding. As an extended application of the present method, a nondimensional Monte Carlo simulation method was presented to describe the behavior of the composite in which the number and location of broken components and debonded interface vary with increasing strain.