Establishment and Validation of a Structural Dynamics Model with Power Take-Off Driveline for Agricultural Tractors

As off-road vehicles, in addition to field transportation, another vital function of agricultural tractors is provide power for machinery. Therefore, the dynamic performance take-off (PTO) driveline directly affects reliability tractors. Firstly, a torsional vibration coupled spatial dynamics model proposed according classical machine and gear theory. In model, interactions among vertical, lateral, rotational motions parts are fully included. The coupling vibrations from internal excitations (such as tooth surface friction, time-varying mesh, engine pulse) external machinery load) also considered. Secondly, simulation results obtained using numerical solving algorithm ode15s. actual experiment carried out on indoor Tractor PTO Test Bench. Then, verified by comparing test with results. Finally, characteristics whole revealed under different drive modes, especially strong between low-speed heavy-load mode. mesh forces root mean square (RMS) values acceleration amplitude main generally decrease gradually increase rotation speed torque. Furthermore, can be applied assessment, instance, vibration, damage, fatigue vehicles considering transmissions, particularly working environment.