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Generation of virtual geometric domains for woven textile composites

机译:编织纺织复合材料的虚拟几何域生成

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摘要

The definition of an appropriate geometric domain is a prerequisite for performing virtual thermo-mechanical analyses on materials. Most of the current methods for generating virtual geometric domains for textile composites rely on complex equations conjured from the machining/manufacturing of the textiles; consequently, an intuitive method for developing a variety of virtual geometric domains for woven textile composites is desirable. The literature describes several techniques for generating geometric models for textile composites using advanced energy minimisation principles and computational imaging tools, but these techniques require specialist equipment, for deducing necessary empirical data, and heuristics to obtain acceptable results. This communication proposes a method for generating virtual geometric models using simple geometric metrics from the topology of the desired woven textiles. We describe and implement a geometric modelling algorithm for generating woven textile composites and show that the proposed technique yields geometric models with comparable characteristics to actual textile fabrics. Due to its modular structure, the proposed algorithm can be readily implemented on any programming platform and adapted to generate bespoke woven textile fabrics. This has been demonstrated by generating CAD models of woven textiles which can be adopted in any pre-processing tool for subsequent analysis in a finite element scheme.
机译:适当的几何域的定义是对材料进行虚拟热机械分析的先决条件。用于产生纺织复合材料的虚拟几何结构域的大多数方法依赖于从纺织品的加工/制造召集的复杂方程;因此,需要一种用于开发用于编织织物复合材料的各种虚拟几何结构域的直观方法。该文献描述了用于使用先进的能量最小化原理和计算成像工具生成纺织复合材料的几何模型的若干技术,但这些技术需要专业设备,用于推导必要的经验数据和启发式以获得可接受的结果。该通信提出了一种用于使用来自所需编织纺织品的拓扑的简单几何指标来产生虚拟几何模型的方法。我们描述并实现了一种用于产生编织织物复合材料的几何建模算法,并表明该技术产生了与实际纺织织物具有可比特征的几何模型。由于其模块化结构,所提出的算法可以容易地在任何编程平台上实现,并适用于产生定制编织纺织品织物。这通过产生编织纺织品的CAD模型来证明,这可以在任何预处理工具中采用,以便在有限元方案中进行后续分析。

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