Chosen properties of a dynamic model of crankshaft assembly with three degrees of freedom

In the work presented herein the dynamic model of the crankshaft assembly with three degrees of freedom has been presented. On the basis of the physical model analysis (with the static mass reduction) the simulation model of the crankshaft assembly using Matlab&Simulink programme, has been designed. On the basis of the derived equations of motion, the authors have analysed the influence of chosen parameters, among others: the moment of flywheel inertia, loading torque, different crankshaft rigidity values, on the operation of the simulation model, whose input parameters reflect the real-life crankshaft assembly employed as the working mechanism in the Stirling engine. As a result of the performed simulations, displacement curves, piston velocity and acceleration values, as well as adequate crankshaft angular displacement, the angular velocity and angular acceleration have been additionally presented. The presented results provide information about the dynamic performance of the simulated real-life object.