Tribology and Lubricants

  • 제34권1호
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  • Pages.23-32
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  • 2018
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  • 2713-8011(pISSN)
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  • 2713-802X(eISSN)
한국트라이볼로지학회 (Korean Tribology Society)
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곡률 커플링 접촉각에 따른 접촉 강성 및 굽힘 강성해석

Analysis of Contact Stiffness and Bending Stiffness according to Contact Angle of Curvic Coupling

  • 유용훈 (부산대학교 기계공학부) ;
  • 조용주 (부산대학교 기계공학부) ;
  • 이동현 (한국기계연구원 시스템다이나믹스 연구실) ;
  • 김영철 (한국기계연구원 시스템다이나믹스 연구실)
  • Yu, Yonghun (Graduate School, Dept. of Mechanical Engineering, Pusan National University) ;
  • Cho, Yongjoo (Graduate School, Dept. of Mechanical Engineering, Pusan National University) ;
  • Lee, Donghyun (Dept. of System Dynamics, Korea Institute of Machinery and Material) ;
  • Kim, Young-Cheol (Dept. of System Dynamics, Korea Institute of Machinery and Material)
  • 투고 : 20171131
  • 심사 : 2018.01.13
  • 발행 : 2018.02.28
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초록

Coupling is a mechanical component that transmits rotational force by connecting two shafts. Curvic coupling is widely used in high-performance systems because of its excellent power transmission efficiency and easy machining. However, coupling applications change dynamic behavior by reducing the stiffness of an entire system. Contact surface stiffness is an important parameter that determines the dynamic behavior of a system. In addition, the roughness profile of a contact surface is the most important parameter for obtaining contact stiffness. In this study, we theoretically establish the process of contact and bending stiffness analysis by considering the rough surface contact at Curvic coupling. Surface roughness parameters are obtained from Nayak's random process, and the normal contact stiffness of a contact surface is calculated using the Greenwood and Williamson model in the elastic region and the Jackson and Green model in the elastic-plastic region. The shape of the Curvic coupling contact surface is obtained by modeling a machined shape through an actual machining tool. Based on this modeling, we find the maximum number of gear teeth that can be machined according to the contact angle. Curvic coupling stiffness is calculated by considering the contact angle, and the calculation process is divided into stick and slip conditions. Based on this process, we investigate the stiffness characteristics according to the contact angle.

키워드

참고문헌

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피인용 문헌

  1. Numerical analysis of fretting wear in lateral contact of sphere/sphere vol.235, pp.10, 2018, https://doi.org/10.1177/1350650120983677