DYNAMICAL ANALAYSIS OF THE CONTACT FORCES FOR HIGH SPEED TRAIN WHICH MOVING ON THE FLEXIBLE STRUCTURES
Mehmet Akif Koç Mustafa Eroğlu İsmail Esen Yusuf Cay
AbstractIn this paper, ten DOF half car train model was examined to determine time dependent dynamical contact forces between train wheel and flexible structure likewise a bridge. The train model which used in this study consist of train front and rear bogies, train wheels I train body and spring and damping element which represent primary and secondary suspension systems for high speed train. The equation of motion for Train Bridge Interaction (TBI) is defined by Lagrange equation using kinetic and potential energies of contact points between high speed train wheel and bridge structure. After the equation of motion stated first order state-space representation, the equations of motion of the entire system were solved in time domain using fourth order Runge-Kutta algorithm with special a software that papered in MATLAB environment. Then, the contact forces between train wheels and bridge structure have been evaluated in terms of train velocity, train body mass and bridge flexibility. Consequently, it was observed that the contact forces are very influenced by the train and bridge parameters.