Experimental and Numerical Validation of Laminated Structure Dynamics from a Switched Reluctance Machine Stator

In this paper the vibration behavior of a Switched Reluctance Machine (SRM) stator has been investigated. Its core is made of laminations stacked together by punching them and then pressing them along the axial direction. The approach presented here is a structured procedure to understand the effects of a laminated stator on the overall structural dynamics. Experimental modal analyses have been carried out for different samples of single lamina and a five laminas stack. The output natural frequencies and mode shapes have been compared with a set of finite element method (FEM) simulations involving different modelling techniques, such as the use of different material properties in the FEM analysis (from isotropic to orthotropic) and modelling the contact between each lamina. The results obtained in this study demonstrated that high prediction accuracy can be achieved by means of complex modeling approaches when compared to experimental data.status: accepte