Abstract The article describes a method of creating a mesoscale finite element model of a fabric reinforced laminate that replicates the smallest repetitive fragment of its microstructure – RUC (Repetitive Unit Cell). The model takes into account the influence of the number and orientation of layers, the weave of the reinforcement fabric as well as manufacturing technology on the strength and stiffness of the laminate. The constants of the finite elements forming RUC (equivalent cross-sectional parameters, limit values of forces ensuring layer integrity) are determined experimentally by performing uncomplicated tests of specimens of a particular laminate. A special preprocessor was developed to generate the finite element model of the construction element from laminate, which automatically creates the so-called batch file defining the model. The usefulness of the preprocessor was checked by simulating a three-point bending test of a laminate door beam of a passenger car. The obtained calculation results were verified experimentally.

中文翻译：

---

多相微结构层合结构单元的有限元模型

摘要 本文描述了一种创建织物增强层压板的中尺度有限元模型的方法，该模型复制了其微观结构的最小重复片段 - RUC（重复单位单元）。该模型考虑了层数和方向、增强织物的编织以及制造技术对层压板强度和刚度的影响。形成 RUC 的有限元常数（等效横截面参数，确保层完整性的力的极限值）通过对特定层压板的样品进行简单的测试来实验确定。开发了一种特殊的预处理器，用于从层压板生成建筑元素的有限元模型，它会自动创建定义模型的所谓批处理文件。通过模拟客车层压门梁的三点弯曲试验来检验预处理器的有效性。得到的计算结果得到了实验验证。