Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Analysis for the Driving Dynamic Characteristics of Large Scale Semi-Trailer Equipped with Swivel Axle and Hydropneumatic Suspension Unit

회전 차축 및 유기압 현가장치를 장착한 대용량 세미 트레일러의 주행 동특성 해석

  • Ha, Taewan (The Missile Research and Development Institute, Agency for Defense Development) ;
  • Park, Jungsoo (The Missile Research and Development Institute, Agency for Defense Development)
  • 하태완 (국방과학연구소 미사일연구원) ;
  • 박정수 (국방과학연구소 미사일연구원)
  • Received : 2021.09.30
  • Accepted : 2022.02.21
  • Published : 2022.04.05
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Abstract

Driving dynamic characteristics of semi-trailer loaded with precise equipments are very important to protect them from vibration, impact or other disturbances. In this paper, in order to identify the driving dynamic characteristics of the large scale semi-trailer equipped with swivel axle and hydropneumatic suspension unit, Dynamics Modeling & Simulation(M&S) were performed using general Dynamics Analysis Program(RecurDyn V9R2). The semi-trailer was modeled as two types - one is Multi Rigid Body Dynamics(MRBD) model, and the other Rigid-Flexible Body Dynamics(RFlex) one. The natural vibration mode and frequencies of semi-trailer body, acceleration of dummy-weight, pitch, roll and yaw of dummy-weight, swivel axle and hydropneumatic suspension cylinder support structure, and acting force of hydropneumatic suspensions etc. were obtained from the M&S. Additionally frequency analysis were performed using the data of behavior obtained from above M&S. Generally the quantitative results of RFlex are larger than them of MRBD in view of magnitude of the comparable parametric values.

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References

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