誘導電動機のフレーム付き固定子鉄心の固有振動数

概要

論文の詳細を見る
The construction and the frame with a fin in a totally enclosed induction motor have almost the same design worldwide. A method for estimating natural frequencies of a stator core pressed into the frame of this type of motor was found by a finite-element method (FEM) analysis. First, the number of circumferential contact points between the inner surface of the frame and the outer surface of the core was determined by experiments and FEM analysis. It was confirmed that the number of circumferential contact points was three. In these analysis, spring elements with radial and circumferential spring constants were set at these contact points. Good agreement in natural frequencies obtained by measurement and by FEM analysis was attained when the number of spring constants in the radial direction was infinite and that in the circumferential direction was finite. FEM analysis with spring elements at contact points is useful in practical applications to obtain the natural frequencics of a stator core with frame.
一般社団法人日本機械学会の論文
1995-11-25