Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Field Measurement of the Center of Gravity and the Moment of Inertia of Railway Vehicles Using Vibration

진동을 이용한 철도차량의 무게중심과 관성모멘트 현장 측정

  • Song, Ki-Seok (Mechanical Engineering, SungKyunKwan University) ;
  • Choi, Yeon-Sun (School of Mechanical Engineering, SungKyunKwan University)
  • Received : 2013.06.25
  • Accepted : 2013.10.01
  • Published : 2013.10.20
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Abstract

The center of gravity and the moment of inertia of railway vehicles are important parameters for running safety and stability in railway vehicle design. However, the exact measurement of those is difficult in manufacturing field. The weight measurement of a railway vehicle beneath the wheel using a weight scale is off by a large amount. This paper suggests a measurement method for the center of gravity and the moment of inertia of railway vehicles using vibration. For the measurement a railway vehicle is suspended using four wires. Direct measurement of the tension of the wires and the period of swinging motion of the suspended railway vehicle with calculations give the exact location of the center of gravity and the moment of inertia in x, y, and z directions, respectively. This implementation was demonstrated using an experimental device and verified numerically.

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References

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