Abstract
In this study, dynamic behaviour of size dependant Timoshenko microbeams under the influence of moving loads is modelled and investigated using FEM method. Firstly, the stiffness and mass property matrices of small-scale size-dependant two-node finite element are obtained by using new shape functions derived from the static state of motion equations created using classical Timoshenko beam theory (TBT) and modified couple stress theory (MCST). Subsequently, the load-beam interaction is modelled and integrated with beam motion equations without neglecting the mass inertia effects of the moving load. The effects of different load velocities, mass of the load and material size parameter on the beam dynamics have been investigated in a wide context.
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