Nonlinear Contact Stress Analysis of Bolted Poles

ANSYS has powerful functions of mechanical analysis, such as contact stress analysis, which can include structure large deformation and material nonlinear property. In electric machine, such as salient synchronous motor with bolted pole configurations, structural forces (centrifugal force and bolt pull force) and magnetic forces (torque) are applied on the poles, and contact stress of interfaces between poles and rims becomes very complicated, which is the key consideration of the bolted pole design. In this paper, we carry out a nonlinear contact stress analysis of the bolted pole using ANSYS. The results give us a good guide of bolted pole design.

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