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실차 측정 정보를 이용한 군용 차량의 다물체 동역학 모델링 및 검증

Modeling and Verification of Multibody Dynamics Model of Military Vehicle Using Measured Data

  • Ryu, Chi Young (School of Mechanical Engineering, Pusan Nat'l Univ.) ;
  • Jang, Jin Seok (School of Mechanical Engineering, Pusan Nat'l Univ.) ;
  • Yoo, Wan Suk (School of Mechanical Engineering, Pusan Nat'l Univ.) ;
  • Cho, Jin Woo (Agency for Defense Development) ;
  • Kang, E-Sok (Department of Mechanical Design Engineering, Chungnam Nat'l Univ.)
  • 투고 : 2014.03.10
  • 심사 : 2014.08.01
  • 발행 : 2014.11.01

초록

군용 차량의 경우 야지 주행에 대한 성능 시험이 필수적인데 실차 시험의 경우 비용과 시간에 의한 제약을 받게 되므로, 시뮬레이션을 통한 성능 분석이 효율적이다. 본 연구에서는 상용 다물체 해석프로그램인 MSC.ADAMS 를 이용하여 차량 모델을 개발한다. 타이어 수직 강성 시험을 수행하고 FTire 모델에 반영하여 타이어 모델을 생성한다. 댐퍼의 경우 비선형 특성 시험을 통해 얻은 결과를 반영하여 댐퍼를 모델링 하였으며, 겹판 스프링은 빔 요소 모델로 차량 모델을 구성한다. 단순 장애물 통과 시험 및 파형로 통과 시험을 수행하고 가속도 응답 및 휠 하중 응답 분석을 통해 차량 모델의 신뢰성을 검증하였다.

It is essential to perform driving performance tests of military vehicles on rough terrain. A full car test is limited by cost and time constraints, because of which a dynamic analysis via computer simulation is preferred. In this study, a vehicle model is developed using MSC.ADAMS, a commercial multibody analysis program, and compared via experiments. FTire is modeled using the results of a tire performance test to obtain the vertical stiffness. A nonlinear damper is modeled by a characteristic experiment. Leaf springs are modeled with beam force elements and consisted to a vehicle model. The vertical force and acceleration response of the wheel are identified when vehicle is passing over a simple bump as well as a sinusoidal road. The developed vehicle model is verified with the results of a full car test.

키워드

참고문헌

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피인용 문헌

  1. Development of a 3D road profile measuring system for unpaved road severity analysis vol.18, pp.2, 2017, https://doi.org/10.1007/s12541-017-0021-8