FIELD-MEASUREMENTS OF DRIVELINE TORQUES IMPOSED ON PTO DRIVEN MACHINERY

The torque loading patterns of 21 p.t.o. driven machines were measured in normal field conditions. Torque was analysed by calculating amplitude distributions and power spectral density curves in order to provide information on both the amplitude and frequency components in the driveline. The vastly different characteristics shown by various machines are discussed, and driveline components which cause forcing inputs at particular frequencies are identified. An attempt is made to show how the results can be used in machine design and development for the identification and analysis of forcing frequencies, laboratory simulation of field loading and prediction of component fatigue damage. © 1979.