Recent advancements in composite truss structures have achieved high structural efficiency by combining truss geometries and composite materials within scalable manufacturing processes. Filament winding-based approaches, such as the Wrapped Tow Reinforced (WrapToR) truss process, allow for simpler machine design compared to braiding or pultrusion but face limitations as production rates and truss beam lengths increase. We herein introduce WrapToR Trusstrusion, a manufacturing concept using coaxial winding heads to wrap multiple pre-wetted tows around continuously fed chord members, forming a complete wound truss structure in one pass. This eliminates the need for reciprocating motion and fixed mandrel lengths of conventional winding machines. We present the WrapToR Trusstrusion concept, the first prototype machine setup, and the numerical analysis and mechanical characterisation of produced specimens, aiming to assess the quality of the produced trusses. This innovative machine concept progresses towards high-throughput, continuous production of mechanically superior WrapToR truss beams while trading off process and geometry versatility for standardisation and production rate.

中文翻译：

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连续挤压缠绕丝束加固桁架梁

复合桁架结构的最新进展通过在可扩展的制造工艺中结合桁架几何形状和复合材料，实现了高结构效率。基于纤维缠绕的方法，例如缠绕丝束增强 (WrapToR) 桁架工艺，与编织或拉挤成型相比，可以实现更简单的机器设计，但随着生产率和桁架梁长度的增加而面临限制。我们在此介绍 WrapToR 桁架，这是一种制造概念，使用同轴缠绕头将多个预润湿的丝束缠绕在连续馈送的弦杆构件上，一次形成完整的缠绕桁架结构。这消除了传统绕线机的往复运动和固定芯轴长度的需要。我们提出了 WrapToR Trusstrusion 概念、第一个原型机设置以及所生产样本的数值分析和机械特性，旨在评估所生产桁架的质量。这种创新的机器概念朝着高产量、连续生产机械性能优异的 WrapToR 桁架梁的方向发展，同时权衡工艺和几何形状的多功能性以实现标准化和生产率。