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The dynamic response of the structure subjected to vehicular load is an emerging research topic in the field of transportation and structural dynamics problem. A moving or transit has significant effects on the responses of the structure due to its inertial effects. The responses of the structure may be affected due to the change in the moving masses, speed and presence of cracks on the structure. Due to the presence of cracks on the structure produces local flexibility which is the function of crack depth that directs alteration in dynamic behaviour of structure and the stabilities. In the present analogy, the dynamic behaviour of cracked beam subjected to a transit mass has been focused. The structural component considered for the analysis is a simply-supported beam. The beam is a single cracked beam having inclined edge crack. The crack is present at the middle of the structure. The inclined edge crack is that type of crack which is the combination of both internal and open transverse cracks. So the inclined edge cracked beam behaves like a beam with multiple cracks. The governing equation of motion of the structure under transit mass has been formulated by assuming Euler-Bernoulli’s beam theory. The solution of the governing equation has also been formulated and consequently solved by fourth order Runge-Kutta method. Thus the responses of the inclined edge cracked beam subjected to transit mass are determined by using a numerical method (Runge-Kutta method) by considering various crack parameters and moving load parameters. To verify the exactness and accuracy of the proposed fourth order Runge-Kutta method, finite element analyses (FEA) has been also carried out. The FEA has been carried out in the domain of ANSYS WORKBENCH 2015 software. The full method, transient dynamic analysis, is adopted in the present study. The numerical method incorporated in the transient dynamic analysis is Newmark-β integration method. The results observed form both the numerical and FEA analyses are compared with each other and found to be well convergent. The effect of the cracks parameters and moving load parameters on the dynamic behaviour of the cracked structure are also discussed.
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