• Title/Summary/Keyword: wheel-rail two point contact

Search Result 5, Processing Time 0.025 seconds

Contact Point Analysis for Wheel/Rail Contact Force Calculation (차륜/레일간의 접촉력 계산을 위한 접촉점 해석 알고리즘)

  • 박정훈;임진수;황요하;김창호
    • Journal of the Korean Society for Railway
    • /
    • v.2 no.3
    • /
    • pp.1-8
    • /
    • 1999
  • In this paper, descibed was the derived algorithm for calculating contact point between wheel and rail and the developed method for rail modeling. The proposed methods use travelling distance to represent rail center line position vector and rail orientation with respect to Newtonian reference frame. The methods call be easily used ill multibody dynamic analysis. Two numerical examples are shown to verify the validity of the proposed methods.

  • PDF

A Three Dimensional Wheelset Dynamic Analysis considering Wheel-rail Two Point Contact (차륜-레일 2점 접촉을 고려한 3차원 윤축 동역학 해석)

  • Kang, Ju-Seok
    • Journal of the Korean Society for Railway
    • /
    • v.15 no.1
    • /
    • pp.1-8
    • /
    • 2012
  • Wheelset dynamic analysis is a key element to determine the degree of accuracy of railway vehicle dynamics. In this study, a three-dimensional wheelset dynamic analysis is presented in such a way that the precise wheel-rail contact analysis in three-dimension is implemented into the dynamic equations of a wheelset. A numerical procedure that can be used for the analysis of a wheelset dynamics when the wheel-rail two point contact occurs in a cornering maneuver is developed. Numerical solutions of the constraint equations and the dynamics equations of a wheelset are achieved by using Runge-Kutta method. The proposed wheelset dynamic analysis is validated by comparison against results obtained from VI-RAIL analysis.

Contact point analysis for wheel/rail contact force calculation (휠/레일간의 접촉력 계산을 위한 접촉점 해석 알고리즘)

  • 박정훈;임진수;황요하;김창호
    • Proceedings of the KSR Conference
    • /
    • 1998.11a
    • /
    • pp.429-436
    • /
    • 1998
  • In this paper, we derive the algorithm for calculating contact point between wheel and rail and develop the method for track modeling. The proposed methods use travelling distance to represent track center line poistion vector and track orientation with respect to Newtonian reference frame. The proposed methods can be easily used in multibody dynamic analysis. Two numerical examples are given to verify the validity of the proposed methods.

  • PDF

A Study of Dynamic Characteristic Analysis Algorithm for Running Safety Assessment (주행안전성 평가를 위한 동특성 해석알고리즘 연구)

  • Chung J.D.;Han S.Y.;Chun H.J.;Pyun J.S.
    • Proceedings of the Korean Society of Precision Engineering Conference
    • /
    • 2006.05a
    • /
    • pp.411-412
    • /
    • 2006
  • It is very difficult to analyze the dynamic characteristic because railway vehicle is a very complex system which are connected various mass element with railway vehicle system. To realize and analyze actual phenomenon has restriction that usual commercial software calculates creep force under creep theory about wheel-rail contact mechanism as basic analyzing, and approach about contact point are based on two dimensional non-linear contact theory and simplified Hertzian contact which considers just displacement change on the YZ plain. Therefore, to solve these problems there should be a new approach difference with existing one. In this research, a new algorithm for finding wheel-rail contact position, calculation method of contact force and applied force will be presented.

  • PDF

A New Algorithm of Dynamic Characteristic Analysis for Running Safety of Tilting Vehicle (틸팅차량 주행안전성을 위한 동특성 해석 알고리즘에 관한 연구)

  • Chung Jong-Duk;Chun Hong-Jung;Kim Sun-Cheol;Han Seok-Yoon
    • Proceedings of the KSR Conference
    • /
    • 2005.11a
    • /
    • pp.131-139
    • /
    • 2005
  • It is very difficult to analyze the dynamic characteristic because tilting vehicle is a very complex system which are connected various mass element with tilting system. To realize and analyze actual phenomenon has restriction that usual commercial software calculates creep force under creep theory about wheel -rail contact mechanism as basic analyzing, and approach about contact point are based on two dimensional non-linear contact theory and simplified Hertzian contact which considers just displacement change on the YZ plain. Therefore, to solve these problems there should be a new approach difference with existing one. In this research, a new algorithm for finding wheel-rail contact position, calculation method of contact force and applied force will be presented.

  • PDF