Faced with the acceleration of the energy transition and growing demands for reduced emissions, Vibratec has been a trusted partner for more than 15 years in managing the acoustic and vibratory challenges of electrified drivetrains.
We are involved from the earliest design phases to secure your technical choices, reduce NVH risks and guarantee a robust, high-performance design from the very first iteration.
In the automotive sector, electric powertrains (E-PWT) emit electrical whistling noises and gearbox whines, which can greatly alter comfort perception. It is therefore essential to limit these noise sources by controlling airborne and structure-borne transfers. In addition, the absence of masking noise from combustion engines makes auxiliary equipment noise (pumps, actuators, etc.) more perceptible and thus more critical.
More recently, the aerospace sector has expressed a need to better understand the overall dynamic behavior of hybrid transmissions. For this sector, the main concern is mechanical reliability rather than acoustics (dynamic behavior of shaft lines under electromagnetic and gear meshing excitations).
Mobility in the broadest sense: whether for rail traction (interior and exterior noise, particularly during acceleration and braking), maritime transport or soft mobility (e-bikes), acoustic issues are omnipresent.
In all industrial sectors, noise and vibration are differentiating factors. They must be controlled while balancing other constraints such as technical performance (efficiency, weight, cost…) and increasingly shorter development timelines.
controlled NVH performance
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NVH optimization at source
Electric motors, gear transmissions. Understanding the physical phenomena causing noise. Multi-criteria-constrained optimization algorithms to reduce noise while preserving other performance metrics.
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Testing and validation
Prototype diagnostics, model recalibration, solution research and validation
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Specialized training
Electromagnetic noise, gear dynamics, electrified vehicle acoustics
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Proprietary software tools
VibraVolt and VibraGear, developed with our research partners.
Developed by Vibratec, VibraVolt is a software tool designed to simulate and optimize the acoustic behavior of electrical machines. It combines electromagnetic, mechanical and acoustic models to accurately anticipate vibration sources and noise levels generated by electric motors or generators.
Thanks to this multiphysics approach, VibraVolt is a powerful solution for reducing noise pollution right from the early stages of product development..
VibraGear is a software tool developed by Vibratec and the LTDS laboratory at Centrale de Lyon.
It enables detailed study of the internal sources of gear excitation – such as static transmission error or gear stiffness variations – and evaluates their vibratory response using imported finite element models.
With VibraGear, engineers have a powerful solution to design quieter, more reliable gearboxes with improved performance.
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A complete system vision
We integrate all noise & vibration sources in their real-life environment (motors, gears, air- and structure-borne transfers).
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Cutting-edge digital tools
Electromagnetic, mechanical and multibody models, accounting for nonlinearities and manufacturing tolerances.
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Robust, optimized solutions
Noise reduction across multiple operating points, without compromising performance (efficiency, torque, weight, etc.).
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Seamless collaboration with your teams
Our experts speak the language of your electromagnetic, mechanical and control system engineers.
