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.

Projekt的目的是继续对一种新型，可拆卸和不可避免的技术进行通用研究，以在由FRP空心截面或木条制成的细长条结构中高效连接。一项重要的创新将是对填充纤维增强聚合物（FFRP）制成的铸造连接接头的首次全面研究。申请人的先前研究结果表明，Cast FFRP接头的性能足够大，足以产生与连接的FRP或木材组件相同的负载轴承能力的连接区域。由于冷铸造技术，可以将FFRP直接与木材或纤维增强的塑料连接起来。这些积极的材料属性以及FFRP的自由性能使高效的连接概念效率不足。当前的研究集中在几何复杂性和旋转对称或平面连接几何形状上。为了利用FFRP关节的巨大潜力，需要进一步深入研究。该应用的主题包括继续进行FFRP材料研究以及连接区域中微强化的新颖概念的进一步发展，以及通过热处理过程优化FFRP机械性能。这项工作将与FFRP的空间形式闭合的增强，可拆卸连接节点的原型开发的延续相结合。为此，将利用和扩展在先前研究项目中开发的计算机辅助工具环境和制造过程。FFRP联合技术还有望在不可避免的栏连接方面具有优势，调查领域还将扩展到不可避免的几何，几何，几何复杂复杂的三维节点。对材料合适的压实连接几何形状的研究应显着提高连接的鲁棒性。预览的研究强调了对制造公差对形式拟合FFRP化合物负载能力的影响的基本研究。因此，拟议的项目将提出非接触式测量的新可能性，以确定FFRP节点的制造公差，然后随后控制或减少它们。目前的申请基于到目前为止进行的研究。该项目继续研究着重于基于纤维的纤维，细长的梁元素的新型FFRP连接技术领域的基本问题。