June 2021 news: Manatee V2.1 introduction webinar, e-NVH training, conferences

Manatee software news

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Release Manatee software V2.1

The next major release of Manatee software with the latest version V2.1 is planned for June 16 2021. We will be hosting a short free webinar to introduce this release on July 8.

Although this new version focuses on mechanical engineering, keep in mind that Manatee software is made for all engineers involved in NVH design of an electrical system. For this reason, Manatee includes predefined workflows covering all design stages.

During the webinar on July 8, EOMYS Engineering will present new features aimed at mechanical engineering. A demonstration of Manatee on a complex mechanical model will be performed including eccentricity fault. Manatee V2.1 also includes new interesting features for electrical engineering such as torque-speed map.

Manatee Roadmap
Manatee Roadmap

Zoom on Manatee feature: import of .dxf

The final shape of electric motor lamination results from multiphysics design iterations which include electromagnetic, heat transfer, mechanical, NVH and manufacturing problem-solving. As an example, rotor laminations of IPMSM are designed to maximize torque density, minimize torque ripple and electromagnetic losses, minimize hoop stress under centrifugal forces, minimize magnetic noise and vibrations (e.g. working on magnet V-shape angle, rotor notch shape/distribution), optimize ventilation efficiency for air-cooled rotors, and finally minimize manufacturing and raw material costs… This can lead to rather complex shapes as illustrated by this patent from Ford, pretty far from the standard templates that are proposed by most CAE software in early design loops. This is why Manatee V2.1 enables the import of .dxf lamination when defining your electrical machine.

IPMSM rotor lamination example
IPMSM rotor lamination example

In the detailed design phase, modelling this topological complexity coming from an industrial CAD model is necessary to refine the calculation of electromagnetic excitations, and resulting acoustic noise levels. Electromagnetic force harmonics may indeed come from small magnitude, high frequency/wavenumber flux density harmonics whose path is easily affected by small geometrical changes. Therefore Manatee V2.1 DXF import feature enables e-NVH simulation engineers to get the most accurate modelling consistent with other engineering departments.

Manatee software GUI during .DXF file import
Manatee software GUI during .DXF file import

e-NVH Training

Our September session for a complete e-NVH training is probably the perfect way to start the second half of the year after the summer break.

For every booking, until June 15th we offer an additional early bird discount of 10%. If you would like to activate yours, please contact us.

All detailed information about the session, the different modules, contents and dates are available on our training website.
If your organization does not permit a booking online, please also contact us for the billing and registering procedure.

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After a quite calm year of 2020, EOMYS is back on several conferences this year.

  • Karine Degrendele, an acoustic engineer at EOMYS, will speak about "Noise due to electromagnetic forces in automotive applications" at the next NVEG online meeting (Noise and Vibration Engineering Group at Institue of Acoustics) scheduled for August 10. You can register here.

EOMYS team life

During the last months, EOMYS has welcomed 3 new team members. We are excited about these newly integrated areas of expertise, which will certainly bring our multidisciplinary engineering staff to the next level.

  • Zineb Zahar, who graduated as a mathematical and mechanical engineer from ENSEIRB-Matmeca engineering school, was hired by Eomys to prepare a PhD thesis in structural mechanics focusing on electromagnetic vibration reduction using mechanical solutions. This topic goes from theoretical comprehension of physical phenomena to testing solutions.
  • Clément Moreau, a mechanical engineer who recently graduated from the University of Technology of Compiegne joined EOMYS in March 2021. Native from the North-of-France countryside and after several experiences abroad, he wished to settle in a company evolving in an international context and with inspiring values. Specialized in structural dynamics, he is also interested in Multiphysics and simulation problems. Clement is involved in both consultancy and research projects, related to e-NVH.
  • Gauthier Garioud, an engineering student from the city of Nantes, has studied signal processing at the school Centrale Nantes. He will now work at Eomys for a 5 months internship. He implements new signal processing methods to speed up e-NVH computations of Manatee software.

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