The induction machine stator plays a leading role in delivering the electromagnetic vibration energy from the air gap to the machine housing. In the range of shaft heights larger than 300 millimetres or so the 3D finite element models become too large resulting in long computational times and too low frequencies. For this reason an alternative modelling method is proposed in this paper. The method utilises a Rayleigh-Ritz beam function approach where the stator is treated as a thick orthotropic cylinder with free ends. In this approach the material parameters associated with the elasticity matrix are extracted by fitting the model to measured natural frequencies. The results show that a laminated core structure of the stator cannot be considered as an isotropic steel cylinder.
|Title of host publication||9th International Congress on Sound and Vibration ICSV9|
|Publisher||International Institute of Acoustics and Vibration IIAV|
|Number of pages||7|
|Publication status||Published - 2002|
|MoE publication type||Not Eligible|
|Event||9th International Congress on Sound and Vibration, ICSV9 - Orlando, United States|
Duration: 8 Jul 2002 → 11 Jul 2002
|Conference||9th International Congress on Sound and Vibration, ICSV9|
|Period||8/07/02 → 11/07/02|
- induction machine
- material model
Roivainen, J., Kantola, K., & Klinge, P. (2002). Structural modelling of an induction machine stator. In 9th International Congress on Sound and Vibration ICSV9 International Institute of Acoustics and Vibration IIAV.