Optimum Design of Rotating Machine with Overhung Weight : Part 2, Numerical and Experimental Results

Abstract

This paper describes the numerical and the experimental results about the optimum problems analytically formulated in the previous paper for a rotating machine with an overhung weight and a shaft. The main results obtained are as follows: (1) Much less CPU time and also much less necessary memory space in computer are required in computation by a matrix method presented in the previous paper than by the transfer matrix method. (2) The analysis is especially effective for solving the optimum problems of maximizing the first critical speed of the rotating machine and the optimum shape of the shaft can be directly supplied to the machine design. (3) The improvement of optimum results is simply accomplished by making the resultant shaft system discrete and by correcting only the critical speeds.