TY - JOUR AB - High-speed forming processes such as electromagnetic forming (EMF) and electrohydraulic forming (EHF) have a high potential for producing lightweight components with complex geometries, but the forming zone is usually limited to a small size for equipment-related reasons. Incremental strategies overcome this limit by using a sequence of local deformations to form larger component areas gradually. Hence, the technological potential of high-speed forming can be exploited for large-area components too. The target-oriented process design of such incremental forming operations requires a deep understanding of the underlying electromagnetic and electrohydraulic forming processes. This article therefore analyzes and compares the influence of fundamental process parameters on the acting loads, the resulting course of deformation, and the forming result for both technologies via experimental and numerical investigations. Specifically, it is shown that for the EHF process considered, the electrode distance and the discharge energy have a significant influence on the resulting forming depth. In the EHF process, the largest forming depth is achieved directly below the electrodes, while the pressure distribution in the EMF depends on the fieldshaper used. The energy requirement for the EHF process is comparatively low, while significantly higher forming speeds are achieved with the EMF process. AU - Heggemann, Thomas AU - Psyk, Verena AU - Oesterwinter, Annika AU - Linnemann, Maik AU - Kräusel, Verena AU - Homberg, Werner ID - 30885 IS - 4 JF - Metals SN - 2075-4701 TI - Comparative Analysis of Electrohydraulic and Electromagnetic Sheet Metal Forming against the Background of the Application as an Incremental Processing Technology VL - 12 ER - TY - CHAP AU - Heggemann, Thomas AU - Sapli, Hüseyin AU - Homberg, W. ID - 25448 SN - 2367-1181 T2 - Forming the Future TI - Experimental and Numerical Investigations into the Influence of the Process Parameters During the Deep Drawing of Fiber Metal Laminates ER - TY - JOUR AU - Voswinkel, Dietrich AU - Sapli, Hüseyin AU - Kloidt, Dennis AU - Heggemann, Thomas AU - Homberg, Werner AU - Grydin, Olexandr AU - Schaper, Mirko ID - 26191 JF - IOP Conference Series: Materials Science and Engineering SN - 1757-8981 TI - Improving the Accuracy of Deep Drawn Fiber-Metal Laminate Parts by Preliminary Surface Treatment ER - TY - CONF AU - Sapli, Hüseyin AU - Heggemann, Thomas AU - Homberg, Werner ID - 21522 TI - Combined Curing and Deep Drawing of Fiber Metal Laminates to Spherical Hybrid Components ER - TY - JOUR AB - Current challenges in the automotive industry are the reduction of fuel consumption and the CO2 emissions of future car generations. These aims can be achieved by reducing the weight of the car, which further improves the driving dynamics. In most currently mass-produced cars, the body accounts for one of the largest parts by weight, and hence designing a lightweight car body assumes great importance for reducing fuel consumption and CO2 emissions. Extremely lightweight designs can be achieved by using purely composite materials, which are very light but also highly cost intensive and not yet suitable for large scale production due to the necessity of manual processing. A promising approach for the automated, large-scale production of lightweight car structures with a high stiffness to weight ratio is the combination of high strength steel alloys and CFRP prepregs in a special hybrid material/fiber metal laminate (FML) – which can be further processed by forming technologies such as deep drawing. In current research work at the Chair of Forming and Machining Technology (LUF) at the University of Paderborn, innovative manufacturing processes are being developed for the production of high strength automotive structural components made of fiber metal laminates. This paper presents the results of technological and numerical research that is currently being performed at the LUF into the forming of hybrid fiber metal laminates. This paper focuses on the results of basic research and the individual measures (tool, process and material design) necessary for achieving the desired part quality. AU - Heggemann, Thomas AU - Homberg, Werner ID - 21443 JF - Composite Structures SN - 0263-8223 TI - Deep drawing of fiber metal laminates for automotive lightweight structures ER - TY - CONF AU - Camberg, Alan Adam AU - Tröster, Thomas AU - Heggemann, Thomas AU - Homberg, H. AU - Schaper, Mirko AU - Dietrich, J. AU - Bremser, Wolfgang AU - Achterberg, L. AU - Kabst, M. AU - Wille, M. AU - Peckhaus, Volker ID - 16050 TI - LHYBS – Lightweight Design by Novel Hybrid Materials ER -