Influence of creep forces on the risk of derailment of railway vehicles

The derailment mechanism in a railway vehicle is a complex mechanical phenomenon which has been, and still is, the subject of intense research activity due to the serious consequences it can entail. Since Nadal deduced his well-known formula, many researchers have put forward alternative equations which all attempt to move closer to the data obtained experimentally. This paper provides a summary of the best known and draws up a new formulation based on the theoretical 3-D study of creep forces emerging from the contact patch of the wheel likely to derail. It also provides an in-depth analysis of the role played by spin creepage, including its effect on obtaining theoretical derailment limits, which are more realistic than those obtained using Nadal's formula. Finally, a new derailment criterion is proposed. This new criterion leads to less conservative values than Nadal's equation for zero yaw angles. When the yaw angle is high enough, the results obtained are coincident with those predicted by Nadal's equation.

[1]  V K Garg,et al.  Dynamics of railway vehicle systems , 1984 .

[2]  E. G. Vadillo,et al.  A comprehensive method for the elastic calculation of the two-point wheel–rail contact , 2006 .

[3]  Jorge Ambrósio,et al.  Application of a wheel–rail contact model to railway dynamics in small radius curved tracks , 2008 .

[4]  D Parena,et al.  DERAILMENT SIMULATION, PARAMETRIC STUDY , 1999 .

[5]  A. H. Wickens,et al.  Fundamentals of Rail Vehicle Dynamics , 2003 .

[6]  Hiroaki Ishida,et al.  Safety Assessment for Flange Climb Derailment of Trains Running at Low Speeds on Sharp Curves , 2006 .

[7]  Jeremy Evans,et al.  The Use of Dynamic Simulation in the Investigation of Derailment Incidents , 2002 .

[8]  Ahmed A. Shabana,et al.  Modeling Two-Point Wheel/Rail Contacts Using Constraint and Elastic-Force Approaches , 2002 .

[9]  K. Johnson,et al.  Three-Dimensional Elastic Bodies in Rolling Contact , 1990 .

[10]  Herbert Weinstock,et al.  Wheel climb derailment criteria for evaluation of rail vehicle safety , 1984 .

[11]  J B Ayasse,et al.  Determination of the wheel rail contact patch in semi-Hertzian conditions , 2005 .

[12]  J. A. Elkins,et al.  Wheel forces during flange climb. I. Track loading vehicle tests , 1997, Proceedings of the 1997 IEEE/ASME Joint Railroad Conference.

[13]  William C Shust,et al.  WHEEL FORCES DURING FLANGE CLIMB.. , 1997 .

[14]  J. Rismantab-Sany.  Another look at the single wheel derailment criteria , 1996, Proceedings of the 1996 ASME/IEEE Joint Railroad Conference.

[15]  J. K. Hedrick,et al.  A Comparison of Alternative Creep Force Models for Rail Vehicle Dynamic Analysis , 1983 .

[16]  Nicholas Wilson,et al.  Track-Related Research: Volume 5: Flange Climb Derailment Criteria and Wheel/Rail Profile Management and Maintenance Guidelines for Transit Operations , 2005 .

[17]  Joao Pombo,et al.  A new wheel–rail contact model for railway dynamics , 2007 .

[18]  J. Santamaria,et al.  Equivalent Conicity and Curve Radius Influence on Dynamical Performance of Unconventional Bogies. Comparison Analysis , 2004 .

[19]  Oldrich Polach,et al.  A Fast Wheel-Rail Forces Calculation Computer Code , 2021, The Dynamics of Vehicles on Roads and on Tracks.

[20]  Xuesong Jin,et al.  Effect of Disabled Fastening Systems and Ballast on Vehicle Derailment , 2007 .

[21]  Simon Iwnicki,et al.  Simulation of wheel–rail contact forces , 2003 .

[22]  Roberto Spinola Barbosa.  A 3D Contact Force Safety Criterion for Flange Climb Derailment of a Railway Wheel , 2004 .

[23]  Simon Iwnicki,et al.  Handbook of railway vehicle dynamics , 2006 .

[24]  Ahmed A. Shabana,et al.  Numerical Procedure for the Simulation of Wheel/Rail Contact Dynamics , 2001 .

[25]  Giorgio Diana,et al.  Experimental and numerical investigation on the derailment of a railway wheelset with solid axle , 2006 .

[26]  Vincent,et al.  Comparison of Results of Calculations and Measurements of DYSAF-tests, a research project to investigate safety limits of Derailment at High Speeds , 2002 .

[27]  John A. Elkins,et al.  Testing and Analysis Techniques for Safety Assessment of Rail Vehicles: The State-of-the-Art , 1993 .

[28]  J. Elkins,et al.  New criteria for flange climb derailment , 2000, Proceedings of the 2000 ASME/IEEE Joint Railroad Conference (Cat. No.00CH37110).

[29]  John A. Elkins,et al.  ANGLE OF ATTACK AND DISTANCE-BASED CRITERIA FOR FLANGE CLIMB DERAILMENT , 1999 .

[30]  D J Thompson,et al.  Fundamentals of Rail Vehicle Dynamics: Guidance and Stability , 2004 .

[31]  X Jun,et al.  A study on mechanical mechanism of train derailment and preventive measures for derailment , 2005 .

[32]  Alan Facchinetti,et al.  Wheel-rail contact phenomena and derailment conditions in light urban vehicles , 2003 .

[33]  J. J. Kalker,et al.  A Fast Algorithm for the Simplified Theory of Rolling Contact , 1982 .