Ultra High Power applications designed using the LS-DYNA EMAG solver

Bmax offers industrial solutions based on Ultra High Power (UHP) technology and provides manufacturing solutions for Magnetic Pulse (MP) Forming, Welding and Crimping as well as Electro- Hydro-Forming (EHF) processes. The LS-DYNA® Emag solver version 1.7 used in the Eddy’s current approximation allows modelling different parts of the system like coils, workpieces and the dynamic interactions between them. This module is used as an advanced design tool to for example optimize the Lorentz forces generated in the workpiece. To achieve accurate numerical results, many comparisons have been done using Photon Doppler Velocimeter (PDV) measurements implemented in specific test beds. The described case is of a tube crushing. We will also show how LS-OPT® identification and sensitivity capabilities have been used for material identification using the Magnetic Pulse Forming process. The main objective is to characterize the material dynamic behaviour in the strain rate ranges generated by the Bmax processes (around 1000 to 10,000/s). To summarise the LS-DYNA and the LS-PrePost® capabilities greatly aides the engineering team to provide a feasible industrial solutions from tool design to building predictive models to study the feasibility of a project. We can then now respond faster to customer specifications, but also better understand the physical processes and ultimately reduce design costs by limiting the number of physical testing.