유한요소해석을 통한 도시철도차량 궤도의 구조특성 분석
A study on the Structural Characteristics of Urban Rail Tracks using Finite Element Analysis
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In this study, a finite element analysis was used to analyze the stress state and vibration characteristics generated by continuous contact between wheels and rails when driving urban railway vehicles. The rails applied to the analysis were divided into straight and curved shapes, and three-dimensional modeling was performed to analyze the changes in structural characteristics of wheels and rails when driving on straight and curved rails. As a result of the analysis, the stress characteristics were up to 6.5 MPa on a straight rail and 9.81 MPa on a curved rail, and it is believed that this increase in stress will increase noise due to an increase in friction at the interface. The vibration characteristics of the wheels and rails showed similar behavior from the 3rd mode to the 9th mode of the rail to the intrinsic vibration characteristics from the 4th mode to the 6th mode of the wheel.
Abstract
In this study, a finite element analysis was used to analyze the stress state and vibration characteristics generated by continuous contact between wheels and rails when driving urban railway vehicles. The rails applied to the analysis were divided into straight and curved shapes, and three-dimensional modeling was performed to analyze the changes in structural characteristics of wheels and rails when driving on straight and curved rails. As a result of the analysis, the stress characteristics were up to 6.5 MPa on a straight rail and 9.81 MPa on a curved rail, and it is believed that this increase in stress will increase noise due to an increase in friction at the interface. The vibration characteristics of the wheels and rails showed similar behavior from the 3rd mode to the 9th mode of the rail to the intrinsic vibration characteristics from the 4th mode to the 6th mode of the wheel.
참고문헌 (4)
- David Thompson, "Railway Noise and Vibration" (2009), Elsevier Science
- 김병삼, "도시철도 실내소음에 관한 주관적 평가", 한국기계기술학회지, 14(4), pp.35~40 (2012), 한국기계기술학회[DOI]
- William Riley, "Mechanics of Materials", pp.1~26 (2015), WILEY Publishing
- Singiresu S. Rao, "Mechanical vibrations", pp.575~587 (2021), Pearson