FibreCast - material singularities and multidimensional connections in FFRP (filled fibre reinfoced polymer)

FibreCast - FFRP（填充纤维增强聚合物）中的材料奇点和多维连接

• 批准号: 277966554
• 负责人: Professor Dr.-Ing. Christoph Gengnagel
• 金额: --
• 依托单位: Institut für Architektur und Städtebau (IAS)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/277966554?language=en
• 关键词: FibreCast; material; singularities; multidimensional; connections

The aim of the projekt is to continue generic research into a novel, detachable and non-detachable technology for highly efficient connections in slender bar structures made of FRP hollow sections or wooden bars. An important innovation will be the first-ever comprehensive research on cast connection joints made of filled fibre-reinforced polymer (FFRP).The previous research results of the applicants demonstrated that the performance of cast FFRP joints is large enough to generate connection areas with the same load bearing capacity as the connected FRP or timber components. Due to the cold casting technique, it is possible to connect FFRP directly with timber or fibre-reinforced plastics. These positive material properties, and the free formability of FFRP, enable highly efficient, though still insufficiently researched connection concepts. Current research focusses on nodes with geometrically low complexity and a rotationally symmetric or planar connection geometry.In order to exploit the enormous potential of FFRP joints, further in-depth research is required. The subject of this application includes the continuation of FFRP material investigations and the further development of novel concepts for micro-reinforcement in the connection area as well as the optimization of FFRP mechanical properties by heat treatment processes. This work will be combined with the continuation of the prototypical development of reinforced, detachable connection nodes with spatial form closure from FFRP. For this purpose, the computer-aided tool environment and manufacturing processes developed in the previous research project will be utilized and expanded.Given FFRP joint technology also promises advantages for non-detachable bar connections, the field of investigation will also be extended into non-detachable, geometrically complex three-dimensional nodes. The investigation into material-suitably compacted connection geometries should significantly increase the robustness of the connections.Previous research has highlighted the need for a fundamental study of the influence of manufacturing tolerances on the load-bearing capacity of form-fitting FFRP compounds. The proposed project will therefore present new possibilities for non-contact measurement in order to determine the manufacturing tolerances of FFRP nodes, and subsequently control or reduce them.The present application builds on the research conducted so far. The project continues research focused on essential questions in the field of a novel FFRP connection technology for fibre-based, slender, beam elements in construction.

该项目的目的是继续对一种新颖的可拆卸和不可拆卸技术进行一般研究，以实现由玻璃钢空心型材或木杆制成的细长杆结构的高效连接。一项重要的创新将是首次对由填充纤维增强聚合物（FFRP）制成的铸造连接接头进行全面研究。申请人之前的研究成果表明，铸造FFRP接头的性能足够大，可以与填充纤维增强聚合物（FFRP）形成连接区域。与连接的玻璃钢或木材构件具有相同的承载能力。由于采用冷铸造技术，可以将 FFRP 直接与木材或纤维增强塑料连接。这些积极的材料特性以及 FFRP 的自由成型性可实现高效连接概念，但研究仍不够充分。目前的研究主要集中在几何复杂度较低、旋转对称或平面连接几何形状的节点上。为了挖掘FFRP节点的巨大潜力，需要进一步深入的研究。该应用的主题包括继续进行 FFRP 材料研究、进一步开发连接区域微增强的新概念以及通过热处理工艺优化 FFRP 机械性能。这项工作将与 FFRP 空间形式封闭的加固、可拆卸连接节点原型开发的继续相结合。为此，将利用和扩展先前研究项目中开发的计算机辅助工具环境和制造工艺。鉴于FFRP接头技术也有望在不可拆卸杆连接方面具有优势，研究领域也将扩展到非可拆卸杆件连接。可拆卸的、几何形状复杂的三维节点。对材料适当压实的连接几何形状的研究应显着提高连接的坚固性。先前的研究强调需要对制造公差对形状配合的 FFRP 复合材料的承载能力的影响进行基础研究。因此，拟议的项目将为非接触式测量提供新的可能性，以确定 FFRP 节点的制造公差，并随后控制或减少它们。本应用建立在迄今为止进行的研究的基础上。该项目继续研究重点关注建筑中基于纤维的细长梁元件的新型 FFRP 连接技术领域的基本问题。