To model the deformation of fabric polymer composite materials highly nonlinear in tension along the warp/weft threads, an analytical approach is proposed. Based on experimental data and the method of a deformable polyhedron, a tool is developed for an efficient selection of parameters for the model of a fabric composite consisting of equivalent orthogonally stacked unidirectional layers. A new version of the FARGR software module is developed, which makes it possible to design hybrid carbon-aramid fabric composites that show a significant nonlinear (pseudoplastic) mechanical behavior in tension experiments. The strain was measured by the optical (DIC) method. The failure of a carbon fiber layer occurred by fragmentation with stable delamination. In combination with aramid fabrics, such a fracture mechanism leads to the appearance of an extended pseudoplasticity plateau and to a potential insensitivity of such composites to stress concentrators.

中文翻译：

---

模拟碳-芳纶织物复合材料在张力下的非线性变形和损伤

为了模拟织物聚合物复合材料沿经线/纬线的张力高度非线性的变形，提出了一种分析方法。基于实验数据和可变形多面体的方法，开发了一种工具，用于有效选择由等效正交堆叠单向层组成的织物复合材料模型的参数。开发了新版本的 FARGR 软件模块，这使得设计混合碳-芳纶织物复合材料成为可能，该复合材料在拉伸实验中显示出显着的非线性（假塑性）力学行为。通过光学(DIC)方法测量应变。碳纤维层的破坏是由稳定分层的碎裂引起的。结合芳纶面料，