• Title/Summary/Keyword: 기구정역학 시험

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Vehicle Dynamics Modeling and Correlation Using the Kinematic and Compliance Test of the Suspension (현가장치 기구정역학 시험에 의한 차량동역학 모델링 및 시험검증)

  • Kim Sangsup;Jung Hongkyu
    • Transactions of the Korean Society of Automotive Engineers
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    • v.13 no.1
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    • pp.109-118
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    • 2005
  • A functional suspension model is proposed as a kinematic describing function of the suspension that represents the relative wheel displacement in polynomial form in terms of the vertical displacement of the wheel center and steering rack displacement. The relative velocity and acceleration of the wheel is represented in terms of first and second derivatives of the kinematic describing function. The system equations of motion for the full vehicle dynamic model are systematically derived by using velocity transformation method of multi-body dynamics. The comparison of field test results and simulation results of the ADAMS/Car demonstrates the validity of the proposed functional suspension modeling method. This model is suitable for real-time vehicle dynamics analysis.

A Study on the Development of the VTL Vehicle Dynamics Model to Analyze Vibration Characteristics (차량 진동특성 해석을 위한 VTL 차량 모델 개발에 관한 연구)

  • Kwon, Seong-Jin;Bae, Chul-Yong;Kim, Chan-Jung;Lee, Bong-Hyun;Koo, Byoung-Kook;Rho, Guck-Hee
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2007.11a
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    • pp.409-414
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    • 2007
  • Nowadays, with the advancement of computational mechanics, and vehicle dynamics simulation linked up with virtual testing laboratory(VTL) and virtual proving ground(VPG) technologies has become a useful method for analyzing numerous driving performances and diverse noise/vibration characteristics. In this paper, the analytical vehicle model based on multi-body dynamics theory was developed to investigate the vibration characteristics according to various road conditions. For the purpose, the whole vehicle parameters, each vehicle's part parameter, and part connecting elements such as spring, damper, and bush were measured by an experiment. Also, the vehicle dynamics model, which includes the front suspension, rear suspension, steering, front wheel, rear wheel, and body subsystems has been constructed for computer simulation. With the developed vehicle dynamics model, three forces and three moments measured at each wheel center were applied to evaluate and analyze dynamics and vibration characteristics for miscellaneous road conditions.

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