Nucleation and Development of Multiple Cracks in Thin Composite Fibers via the Inverse-Deformation Approach
Nucleation and Development of Multiple Cracks in Thin Composite Fibers via the Inverse-Deformation Approach
复制标题
通过反变形方法研究薄复合纤维中多重裂纹的成核和发展
DOI：
10.1007/s10659-023-10019-8
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发表时间：
2023
影响因子：
2
通讯作者：
Healey, Timothy J.
中科院分区：
文献类型：
--
作者：
Gupta, Arnav;Healey, Timothy J.
在这项工作中，我们研究了薄复合纤维在张力下裂纹模式的成核和发展。纤维包括弹性芯和较弱脆性材料的外层。在最近对此类复合材料进行的拉伸实验中，观察到外层同时出现多个裂纹。我们在这里提出一个简单的一维模型来使用断裂的逆变形方法来预测此类现象。我们将问题理想化为通过线性界面条件耦合的两个轴向负载杆。后者可以被视为一种防止两种材料之间滑动的粘合剂。一根杆被建模为脆性材料，另一根杆被建模为线弹性材料，两者都经历有限变形。
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 phenomena using the inverse-deformation approach to fracture. 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.