한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제20권4호
  • /
  • Pages.158-164
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  • 2003
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  • 1225-9071(pISSN)
  • /
  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

스프링구동 메커니즘의 충격 하중을 받는 링크부재의 내피로 특성 향상

Improvement of Fatigue-Proof Characteristics of Link Members Under Impact Loadings by a Spring-Actuated Mechanism

  • 안길영 (LG산전 전력연구소) ;
  • 박상후 (계명대학교 기계자동차공학부) ;
  • 이부윤 (계명대학교 기계자동차공학부) ;
  • 김원진 (계명대학교 기계자동차공학부) ;
  • 오일성 (LG산전 전력연구소)
  • 발행 : 2003.04.01
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초록

The air circuit breaker (ACB) with the spring-actuated mechanism was studied to improve the fatigue-proof characteristics of its link. The low-cycle fatigue fracture phenomenon occurred on the critical link, called h-link, of ACB from the repeated rapid closing and opening operations. To analyze the cause of failure, dynamic FE-analysis on the b-link part of ACB was performed considering tile velocity and acceleration of the links per time as boundary conditions, which were obtained by using ADAMS. Also, the S-N curve obtained by experiments was used to investigate requirement on the fatigue-proof characteristics. Then, to reduce the maximum tensile stress on the h-link, three types of h-link were examined and one of them was selected.

키워드

참고문헌

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