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압입축의 파손 저감을 위한 설계 방법에 대한 연구

Design Method to Reduce the Press-Fitted Assembly Dama

  • 변성광 (동양미래대학교 기계공학부) ;
  • 최하영 (동양미래대학교 기계공학부) ;
  • 이동형 (한국철도기술연구원 차량핵심기술연구팀)
  • Byon, Sung-Kwang (Dept. of Mechanical Engineering, Dongyang Mirae UNIV.) ;
  • Choi, Ha-Young (Dept. of Mechanical Engineering, Dongyang Mirae UNIV.) ;
  • Lee, Dong-Hyung (Railroad Vehicle Core Technology Research Team, Korea Railroad Research Institute)
  • 투고 : 2021.02.25
  • 심사 : 2021.04.16
  • 발행 : 2021.05.31

초록

A press-fitted shaft is an essential part used in industrial machines, and it is generally used to transmit large quantities of power. Very high contact pressure occurs at the end parts of the contact between the shaft and boss, which are press-fitted shaft components. Such contact pressure not only damages the contact surface of a press-fitted shaft but also reduces its fatigue strength. To improve a press-fitted shaft's fatigue strength, the contact pressure on the contact surface, which directly affects the fatigue strength, should be minimized. Thus, in this study, the design configuration optimization of the end part of the boss was based on the approximate optimization 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 the optimized press-fitted shaft showed that the boss design of the optimized press-fitted shaft effectively improved the fatigue life.

키워드

과제정보

이 논문은 동양미래대학교의 2020년 학술연구비 지원에 의하여 연구되었음.

참고문헌

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