论文标题
薄复合纤维中多个裂纹的成核和发展
Nucleation and development of multiple cracks in thin composite fibers
论文作者
论文摘要
在这项工作中，我们研究了薄复合纤维中裂纹模式的成核和开发。纤维包含弹性芯和较弱的脆性材料的外层。在最近在此类复合材料上的拉伸实验中，观察到多个裂纹在外层上同时发展。我们在这里提出了一个简单的一维模型来预测这种现象。我们将问题理想化，因为两个轴加载荷的杆与线性界面条件相连。后者可以看作是在两种材料之间滑动的粘合剂。一根杆被建模为脆性材料，另一种是线性弹性材料，均经历有限的变形。
We study the nucleation and development of crack patterns in thin composite fibers under tension in this work. A fiber comprises an elastic core and an outer layer of a weaker brittle material. In recent tensile experiments on such composites, multiple cracks were observed to develop simultaneously on the outer layer. We propose here a simple one-dimensional model to predict such phenomenon. We idealize the problem as two axially loaded rods coupled by a linear interfacial condition. The latter can be regarded as an adhesive that resists slip between the two materials. One rod is modeled as a brittle material, and the other a linearly elastic material, both undergoing finite deformations.
