Development of the theoretical and technological fundamentals for intrinsic thermoplastic composite/metal hollow profiles with load-adapted cross-scale form fit

开发具有负载自适应跨尺度形状配合的本质热塑性复合材料/金属空心型材的理论和技术基础

基本信息

批准号：
256127863
负责人：
Professor Dr.-Ing. Maik Gude
金额：
--
依托单位：
Institut für Leichtbau und Kunststofftechnik
依托单位国家：
德国
项目类别：
Priority Programmes
财政年份：
2014
资助国家：
德国
起止时间：
2013-12-31 至 2017-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/256127863?language=en
关键词：
Development theoretical technological fundamentals intrinsic

项目摘要

In contrast to conventional forming processes as adhesive and riveting technologies, approaches with a mechanical interlock between the metal element and fibre-reinforced polymers (FRP) are rarely investigated. The material- and production-oriented design approach of intrinsic hybrids show very high potential and are a promising basis for the development of novel innovative lightweight joints. A mechanical interlock allows the application of extreme loads into rod-shaped and tubular FRP structures, for instance tensile bars, pressure tanks, axis structures, shaft drives. Contour joints are particularly suitable for carrying axial oriented forces and bending moments.The objective of the project is the development of the theoretical and technological principles for intrinsic thermoplastic-metal hollow structures with load-optimised multiscale mechanical interlock (see Figure). The main focus of the project is on the development of a comprehensive dimensioning systematic considering realistic component loads. The manufacturing process of the intrinsic hybrid structure is based on an integral blow moulding prosess with isothermal tool temperature control. The intrinsic process approach aims at consolidating the tape-preform simultaneously to joining the composite to the metal structure.Focus of the investigations is the development of modelling strategies for the manufacturing processes during the consolidation with high cooling rates, as well as the analysis of the damage initiation and propagation behaviour of interlocking hybrid structures. Advanced design guidelines for contour joints for tensile and compressive loads are developed by means of experimental investigations, taking into account medial and combined thermal, as well as static and cyclic mechanical loads.

与传统的形成过程（作为粘合剂和铆接技术）相反，很少研究金属元件和纤维增强聚合物（FRP）之间的机械互锁方法。内在混合动力车的材料和生产的设计方法表现出很高的潜力，并且是开发新型创新轻质关节的有希望的基础。机械互锁允许将极端载荷应用于杆状和管状FRP结构中，例如拉伸条，压力箱，轴结构，轴驱动器。轮廓接头特别适合携带轴向导向力和弯矩。该项目的目的是开发具有固有的热塑性 - 金属空心空心结构，具有负载优化的多尺度机械互锁（请参阅图）。该项目的主要重点是考虑逼真的组件负载的全面尺寸系统的发展。内在混合结构的制造过程基于具有等温工具温度控制的积分吹塑法。固有的过程方法旨在同时巩固磁带预制，以将复合材料加入金属结构。调查的焦点是开发了与高冷却速率合并过程中制造过程的建模策略，以及对互锁杂化杂交结构的损害起始和传播行为的分析。考虑到内侧和组合的热力以及静态和环状机械载荷，通过实验研究制定了用于拉伸和压缩负荷的轮廓关节的高级设计指南。