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Multi-physics Electric Motor Optimization for Noise Reduction

In an electric machine, the torque is generated by electromagnetic forces which also create some parasitic vibrations of the stator. These vibrations excite the mechanical structure on which the motor is fixed and generate sound. When designing the electric machine, this aspect has to be taken into account from the start since it depends on the harmonic content of the currents that feed the machine, on the shapes of the rotor and stator, and on the interaction of the electric frequencies with the natural mechanical modes of the structure.
To simulate this phenomenon, a coupling between electromagnetic calculations and vibration analysis has to be set-up. Some optimization procedure can also be added in order to reduce the noise.
In what follows, it is shown how Altair HyperWorks suite; specifically FluxTM, OptiStruct®, HyperMesh® and HyperStudy® products have been successfully used to perform a multi-physics optimization for noise reduction in a fuel pump permanent magnet motor.

OptiStruct for Structural Analysis: Not Just for Optimizations Anymore

Reprint of Engineering.com article on OptiStruct as a structural analysis tool with built-in optimization capabilities

Optimal Design Exploration Using Global Response Surface Method: Rail Crush

As design exploration and optimization methods have become commonly accepted across a range of industries, such as aerospace, automotive or oil and gas, they are frequently utilized as standard practice to efficiently produce designs and aid critical engineering decisions. This paper present an overview of the practical usage of Altair HyperStudy's GRSM optimization algorithm, followed by application problems of rail
crush design optimization for a single and multi-objective formulation.


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