Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Effects on the Washboarding Phenomenon Based on the Size of the Rotating Body Using a Discrete Element Method

이산요소법을 이용한 회전체의 크기에 따른 Washboarding 현상에 대한 영향 분석

  • 이승준 (금오공과대학교 기계설계공학과) ;
  • 박준영 (금오공과대학교 기계설계공학과)
  • Received : 2021.05.24
  • Accepted : 2021.07.23
  • Published : 2021.08.31
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Abstract

Washboarding is a crucial problem occurring on unpaved roads. This phenomenon involves the formation of ripples on the surface of the unpaved road and causes a critical problem to vehicles and riders. The phenomenon is affected by several parameters, but we focused on the velocity and the size of the rotating body. In the precedent research, we observed that a critical velocity existed for the occurrence of the phenomenon, and the phenomenon's grade was related to the velocity. Therefore, this study, using a discrete element method, aimed to analyze the relation between the velocity and the size of the rotating body for the occurrence of the phenomenon and perform a fast Fourier transform (FFT) analysis to determine the correlation between the phenomenon and the period. The study observed that the critical velocity could vary from the velocity and the size of the rotating body, and there was a certain range of frequency for the occurrence of the Washboarding phenomenon.

Keywords

Acknowledgement

이 논문은 금오공과대학교 학술연구비 지원에 의하여 연구되었음 (2019-104-011).

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