압입축의 파손 저감을 위한 설계 방법에 대한 연구

초록

A press-fitted shaft is an essential part used in industrial machines, and it is generally used to transmit largequantities of power. Very high contact pressure occurs at the end parts of the contact between the shaft andboss, which are press-fitted shaft components. Such contact pressure not only damages the contact surface of apress-fitted shaft but also reduces its fatigue strength. To improve a press-fitted shaft’s fatigue strength, thecontact pressure on the contact surface, which directly affects the fatigue strength, should be minimized. Thus, inthis study, the design configuration optimization of the end part of the boss was based on the approximateoptimization method and was aimed at minimizing the contact pressure at the end of a press-fitted shaft. Comparison of the contact pressure and the contact stress of a conventional press-fitted shaft with those of theoptimized press-fitted shaft showed that the boss design of the optimized press-fitted shaft effectively improvedthe fatigue life.

키워드