インパルス応答法における加振力特性値の調整法

概要

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A mathematical model is introduced into the excitation process of the impulse response testing, and the theoretical analysis is done. Then the control method of the exciting force is proposed and verified with the experimental results. The results obtained are as follows. (1) By applying Hertz's theory of contact in the analysis, the proposed model is valid for evaluating the characteristics of the exciting force exactly, since the simulation can be shown to describe the experimental results qualitatively and quantitatively. (2) The maximum force can be controlled by the hammer mass, hammer velocity, pad radius and elastic contact coefficient. (3) The duration can be lengthened by the increase of the hammer mass, and shortened by the increase of the hammer velocity, pad radius and elastic contact coefficient. (4) The maximum force and the duration can be controlled more effectively by the hammer velocity and the elastic contact coefficient. (5) The impulse is determined by the hammer velocity and the mass coefficient, and is not affected by the elastic contact conditions. (6) The force ratio (average force / maximum force) can be applied to evaluate the wave form of the exciting force.
公益社団法人精密工学会の論文
1989-10-05