David Parkin-Moore, SABR Product Manager, Realis Simulation
Japan User Conference 2025

This study, endorsed by GKN-Automotive, works through a concept phase electric vehicle transmission design using SABR. The concept is a parallel axis single speed transmission, and the variables which are covered are centre distance tuning, bearing selection, ratio selection and gear macro geometry design. Multiple differing concepts are chosen to be compared for metrics such as weight, deflection, gear misalignment and ultimately gear NVH performance.

SABR has many tools to allow rapid evaluation of different concepts, for durability, stiffness, and NVH excitation. The software also guides the user with these tools to make quick directional decisions during concept design and helps avoid introducing problems which are harder to rectify at the detailed design stage.

Dr. Artur Grunwald, Manager Mechanical System Development, GKN Driveline International comments that:
“GKN is applying the SABR/GEAR software in the conceptual development phase of low-noise transmissions”

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The results of this study was presented by Lubor Buřič at the 2025 Japan User Conference on 19 September 2025.