FOR 1224: CFRP-Aluminium Transition Structures in Lightweight Design

FOR 1224：采用轻量化设计的 CFRP 铝过渡结构

• 批准号: 101721741
• 金额: --
• 依托单位: Faserinstitut Bremen e.V. (FIBRE)
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2016-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/101721741?language=en
• 关键词: 1224; CFRP; Aluminium; Transition; Structures; 1224; CFRP; Aluminium; Transition; Structures

To adapt component properties to local requirements the application of combined FRP (fibre reinforced plastics)-metal structural components in lightweight design is increasing. Novel joining concepts are necessary for the weight and process optimised realisation. The Research Unit's objective is to develop integral transition structures between aluminium and CFRP (carbon fibre reinforced plastic), which lead to a lean and weight-minimised design and to a reduction of production steps as well as to advantages concerning optimised load application. The Research Unit started work in summer 2010. Three of the five project partners are developing novel types of joints using their core competence and produce them as well. Thereby textile, welding and casting technologies are used. The other partners support the development process with experimental and numerical investigation for validation and enhancement of the solutions. All associates undertook comprehensive investigations and started preliminary tests to check feasibility of all concepts. Selecting of one concept, first attempts production processes, FE-modelling and concerning fracture behaviour of decoupled connection zones in CFRP-aluminium transition structure under static load application were made. In this case, the transition structure is realised by titanium wire loops. The wire loops are connected to the carbon fibre by textile technologies and to the aluminium sheet by laser beam welding or alternatively by casting technologies. The gained technical experiences provide a basis for determining the interdisciplinary specifications for all concepts. Due to the immense freedom of scope and a variety of process and material parameters, design solutions will be gradually improved during the project. In the first project, phase results for connections are available, which are optimised for static load application, furthermore manufacturing concepts for the joints and investigations concerning corrosion resistance. Further exercises for a potential second phase are to develop selected solutions for different applications and the optimisation of the design for dynamic loads.

为了使组件特性适应本地需求，在轻量级设计中的合并FRP（纤维增强塑料） - 金属结构组件的应用正在增加。新颖的加入概念对于重量和过程优化实现是必要的。研究单元的目标是在铝和CFRP（碳纤维增强塑料）之间开发整体过渡结构，从而导致瘦肉和重量最小化的设计，并减少生产步骤以及有关优化负载应用的优势。该研究部门于2010年夏季开始工作。五个项目合作伙伴中的三个正在使用其核心能力开发新型的关节，并也生产它们。从而使用纺织品，焊接和铸造技术。其他合作伙伴通过实验和数值研究来支持开发过程，以验证和增强解决方案。所有员工都进行了全面的调查，并开始了初步测试，以检查所有概念的可行性。选择一个概念，首先尝试生产过程，Fe模型以及在静态负载应用下CFRP-铝过渡结构中解耦的连接区域的断裂行为。在这种情况下，钛金属丝环实现了过渡结构。电线环通过纺织技术连接到碳纤维，并通过激光束焊接或通过铸造技术连接到铝板。获得的技术经验为确定所有概念的跨学科规范提供了基础。由于范围巨大的自由以及各种过程和材料参数，在项目期间，设计解决方案将逐渐改善。在第一个项目中，可以使用连接的阶段结果，这些结果可用于静态负载应用，此外，关节的制造概念和有关耐腐蚀性的调查。潜在第二阶段的进一步练习是为不同的应用程序开发所选的解决方案，并优化了动态载荷的设计。