Hello Navya,nnThanks for your reply.nFor the harmonic vibration analysis of the electric machines, the electromagnetic force in the air gap is the excitation, which is generated by the ansys maxwell. And the electromagnetic force on each stator teeth tip is simulated in the workbench. Could I ask which part of the flux density are considered in the simulation? Is that the red arch shown in the picture?.Thanks,nAtlasnn