• 제목/요약/키워드: 크롤러형 굴삭기

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크롤러형 굴삭기의 동역학적 모델 개발 및 시뮬레이션 (Dynamic Model Development and Simulation of Crawler Type Excavator)

  • 권순기
    • 한국생산제조학회지
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    • 제18권6호
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    • pp.642-651
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    • 2009
  • The history of excavator design is not long enough which still causes most of the design considerations to be focused on static analysis or simple functional improvement based on static analysis. However, the real forces experiencing on each component of excavator are highly transient and impulsive. Therefore, the prediction and the evaluation of the movement of the excavator by dynamic load in the early design stage through the dynamic transient analysis of the excavator and ensuring of design technique plays an importance role to reduce development-cost, shorten product-deliver, decrease vehicle-weight and optimize the system design. In this paper, Commercial software DADS and ANSYS help to develop the track model of the crawler type excavator, and to evaluate the performance and the dynamic characteristics of excavator with various simulations. For that reason, the track of crawler type excavator is modelled with DADS Track Vehicle Superelement, and the reaction forces on the track rollers were predicted through the driving simulation. Also, the upper frame and cabin vibration characteristics, at the low RPM idle state, were evaluated with engine rigid body modelling. And flexibility body effects were considered to determine the more accurate joint reaction forces and accelerations under the upper frame swing motion.

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탄성 다물체 해석기법을 이용한 크롤러형 건설장비의 주행 및 선회 동특성 해석 (Driving and Swing Analysis of a Crawler Type Construction Equipment Using Flexible Multibody Dynamics)

  • 김형근;서민석
    • 한국자동차공학회논문집
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    • 제5권1호
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    • pp.101-109
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    • 1997
  • A tool for the dynamic simulation and design technique of the excavator plays an important role in the prediction of dynamic behavior of the excavator in the initial design stage. In this paper, a flexible multibody dynamic analysis model including track of the crawler type excavator is developed using DADS and ANSYS. Through the driving simulation of the excavator travelling over rough road track, frequency characteristics of the upper frame and cabin are obtained, and the reaction forces acting on the track rollers are also presented for the fatigue life estimation. The effect of boom vibration modes on the joint reaction forces and accelerations is presented from the swing simulation.

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