SIMULATION OF VEHICLE–BRIDGE COUPLING VIBRATION CONSIDERING THE TRANSIENT JUMP OF THE WHEEL

The transient jump of the wheel is a possible phenomenon in the actual running of light transit. But it is seldom considered in the analysis of vehicle–bridge coupling vibration. In this paper, the so-called alterable element method (AEM) is employed to deal with the coupling interaction of vehicle and bridge considering the actual transient jump of the wheel, and so the classical "contact all along" assumption, which regards wheels and lower structures as being always in contact with each other, is abandoned. In the numerical study, different moving vehicle models where the effects of random and abrupt corrugation are taken into consideration are presented. Also, the effect of velocity on the transient jump is investigated. The numerical solutions compare favorably with the results obtained by alternative methods when no jump phenomenon exists. By using the present method, the transient jump of the wheel with abrupt irregularity is studied. Compared with results of the semianalytical method, the validity of the simulation is confirmed.

[1]  Chuan Wu,et al.  Alterable-element method for vehicle-bridge interaction considering the transient jump of wheel , 2008 .

[2]  Martin W. Trethewey,et al.  Finite element analysis of an elastic beam structure subjected to a moving distributed mass train , 1999 .

[3]  Xing-chun Huang,et al.  Semi-analytical solution of vehicle-bridge interaction on transient jump of wheel , 2008 .

[4]  Yeong-Bin Yang,et al.  DYNAMIC RESPONSE OF A HORIZONTALLY CURVED BEAM SUBJECTED TO VERTICAL AND HORIZONTAL MOVING LOADS , 2001 .

[5]  Z. Abduljabbar,et al.  A DYNAMIC GREEN FUNCTION FORMULATION FOR THE RESPONSE OF A BEAM STRUCTURE TO A MOVING MASS , 1998 .

[6]  Yeong-Bin Yang,et al.  IMPACT RESPONSE OF BRIDGES WITH ELASTIC BEARINGS TO MOVING LOADS , 2001 .

[7]  Stephen P. Timoshenko,et al.  Stresses in Railroad Track , 1932, Journal of Fluids Engineering.

[8]  Yeong-Bin Yang,et al.  Vehicle-Bridge Interaction Element for Dynamic Analysis , 1997 .

[9]  L Frýba,et al.  A rough assessment of railway bridges for high speed trains , 2001 .

[10]  Anthony N. Kounadis,et al.  THE EFFECT OF A MOVING MASS AND OTHER PARAMETERS ON THE DYNAMIC RESPONSE OF A SIMPLY SUPPORTED BEAM , 1996 .

[11]  H. P. Lee.  DYNAMIC RESPONSE OF A BEAM WITH A MOVING MASS , 1996 .

[12]  E. C. Ting,et al.  A general algorithm for moving mass problems , 1974 .

[13]  Guirong Liu,et al.  A point interpolation method for two-dimensional solids , 2001 .

[14]  A. Matsuda,et al.  VIBRATION ANALYSIS OF THE CONTINUOUS BEAM SUBJECTED TO A MOVING MASS , 2000 .

[15]  Yeong-Bin Yang,et al.  Steady-state response and riding comfort of trains moving over a series of simply supported bridges , 2003 .

[16]  Yeong-Bin Yang,et al.  Vibration of simple beams due to trains moving at high speeds , 1997 .