Abstract

To simulate the behaviour of textiles, three major characteristics are important, kinematic fibre interaction, shear behaviour, and thickness changes of the fabric caused by shearing. Instead of anisotropic continuum mechanical models normally used, a macroscopic finite element coupled with an internal unit cell, made of beam elements is proposed here. The beam elements represent the yarns. The method is generalized for unit cells with parallelogram shaped unit cell geometries. The coupled unit cell model can improve finite element simulations, in terms of calculation time and modelling effort, because the major characteristics named before can be described in detail by the unit cell without using full-scale models.

中文翻译：

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平行四边形样单元与宏观有限元耦合以模拟纺织品行为的通用方法

摘要

为了模拟纺织品的行为，三个主要特征是重要的，运动纤维相互作用，剪切行为以及由剪切引起的织物厚度变化。代替通常使用的各向异性连续体力学模型，在此提出了由梁单元制成的与内部单元耦合的宏观有限元。梁元件代表纱线。该方法适用于具有平行四边形形状的晶胞几何形状的晶胞。耦合的晶胞模型可以在计算时间和建模工作方面改善有限元仿真，因为以前命名的主要特征可以由晶胞详细描述，而无需使用完整模型。