TRR 285: Method development for mechanical joinability in versatile process chains

可接合性往往是构件结构高效生产过程的关键。为了通过流程链有效地实现通过不同材料和施工方法增加产品的多样性，它的多功能性是必需的，特别是如果要确保对供应链变化的弹性的话。多功能流程链，即产品创建所需的所有工艺和工艺步骤的序列，能够对半成品、接合区、部件或接合工艺进行有针对性的更改，超出最初计划的范围，同时仍能确保可接合性。越来越多的材料-几何组合(MGCS)不仅要求可靠地预测可接合性，而且尤其要求机械连接过程的多功能性。跨区域协作研究中心285(TCRC285)以机械连接为例，研究在材料(连接适合性)、设计(连接安全性)和生产(连接可能性)三个方面的通用性以及连接性的可靠预测和设计的科学方法。考虑到大量的MGC，通过发展连接工艺，需要对不同的连接条件和干扰变量具有容忍性和快速适应性的解决方案。从长远来看，将有一种灵活和可移植的设计方法，为新的连接任务提供选择工艺和设计接头的可能性，创造适合连接的材料解决方案，并提前预测接头的可实现的机械性能。成形和预无孔机械连接工艺特别有效，在第一个资助期对这些工艺的基本原理进行了调查。对铝、钢和纤维增强塑料复合材料(FRP)机械连接中复杂的因果关系的研究，为从待连接部件的材料特性到连接过程和调整的性能曲线，全面预测接头的可接合性奠定了基础。因此，在TCRC285的第二个资助期，将重点研究之前的制造步骤与接头承载能力之间的相互作用，重点放在工艺和材料上，以便为实现机械连接工艺的多功能性、新的工艺方法以及机械连接接头的可转移设计方法奠定基础。我们的愿景是通过创建合适的方法来确保通用流程链中所有实际需求配置文件的机械接合性，而不需要设置工作或物理验证测试。

Joinability is often the key to efficient production processes of component structures. In order to efficiently realise the increasing variety of products through different materials and construction methods via a process chain, its versatility is required, especially if resilience to changes in supply chains is to be ensured. A versatile process chain, i.e. a sequence of all the necessary processes and process steps for product creation, enables targeted changes to be made to the semi-finished product, the joining area, the component or the joining process that exceed the originally planned extent while still ensuring joinability. The growing number of material-geometry combinations (MGCs) requires not only a reliable prediction of the joinability but also, and in particular, a versatility of the mechanical joining processes. The transregional collaborative research center 285 (TCRC285) uses the example of mechanical joints to research scientific methods for versatility in the three areas of material (joining suitability), design (joining safety) and production (joining possibility) as well as for reliable prediction and design of the joinability. With a view to the numerous MGC, tolerant and quickly adaptable solutions to different joining conditions and disturbance variables are required through the development of joining processes. In the long term, a flexible and transferable design methodology will be available that offers the possibility of selecting processes and designing joints for new joining tasks, creating material solutions suitable for joining and also predicting the achievable mechanical properties of the joints in advance. Forming and pre-hole-free mechanical joining processes are particularly efficient, the fundamentals of these were investigated in the first funding period. Research into the complex cause-effect relationships in the mechanical joining of aluminium, steel and fibre-reinforced plastic composites (FRP) has created the basis for a holistic prediction of the joinability of a joint, from the material properties of the parts to be joined to the joining processes and the adjusted property profile. In the second funding period of TCRC285, the interactions between the preceding manufacturing steps and the joint load bearing capacity are therefore to be researched with a focus on processes and materials, in order to create the foundations for achieving the versatility of the mechanical joining processes, also with novel process approaches, and a transferable design methodology for mechanically joined joints. The vision is to ensure mechanical joinability for all realistic requirement profiles in versatile process chains without setup effort or physical validation tests by creating suitable methods.