SFB/TRR 285-A03

Calculation and evaluation of process-induced material structure phenomena in FKV-metal connections

Fiber-reinforced thermoplastics (FRTP) enable the production of lightweight structures within short cycle times. By leveraging the specific material properties of FRTP, connections between dissimilar joining partners can be realized with innovative assembly interfaces. Joining processes are accompanied by local changes in the material structure.

During the second funding period, a modeling strategy for direct pin pressing and self riveting in FRTP is being developed. In addition to process simulation at the meso level, the analysis of load-bearing behavior is also a focal point of the work. Currently, pin pressing is being investigated both experimentally and numerically. Initially, the multi-filament (MF) approach used in the first funding period is applied using Arbitrary-Lagrangian-Eulerian(ALE)-methods. In the next step, the textile architecture will be modeled at the meso level. However, to numerically depict the entire process, sliding and separation phenomena of the architecture must be considered. For this purpose, experimental test environments and numerical modeling approaches are currently being developed. Based on this, data-driven approaches to material modeling are being examined to enable a subsequent load-bearing analysis.