A Study on Structural Durability due to the Configuration of Ripper at Excavator

굴착기에서의 리퍼의 형상에 따른 구조적 내구성 연구

  • Kang, Min-Jae (Department of Electronic Engineering, Jeju University) ;
  • Cho, Jae-Ung (Division of Mechanical & Automotive Engineering, Kongju University)
  • 강민제 (제주대학교 전자공학과) ;
  • 조재웅 (공주대학교 기계자동차공학부)
  • Received : 2014.04.20
  • Accepted : 2014.05.25
  • Published : 2014.06.30


In this study, two models due to the configuration of ripper at excavator are investigated by structural and fatigue analyses. The maximum stress and deformation are happened at the axis connected with the body of working device and the direct working part respectively. Model 1 is thought to have more structural durability than model 2. Fatigue life or damage in case of 'SAE bracket history' whose load change is most severest among non-uniform fatigue loads is shown to become most unstable. But life or damage in case of 'Sample history' whose load change is slowest among non-uniform fatigue loads is shown to become most stable. These study results can be effectively utilized with the design of ripper at excavator by anticipating and investigating prevention and durability against its fatigue damage.


Excavator ripper;Maximum stress;Maximum deformation;Fatigue life;Fatigue damage;Durability


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