Study of an Optimized Mechanical Oscillator for the Forced Vibration of the Soil Cutting Blade

In the nursery sector, transport and planting of trees must occur with roots wrapped in a ball original earth. The cutting soil can be carried out semicircular vibrating blade moved by an oscillator mounted on self-propelled machine. produces excitation torque supplied to together torque. advantage is reduction up 70%. However, correctly design oscillator, we need investigate link between maximum displacement blade, oscillation velocity, dry friction, torque, elastic required power, energy, frequency. velocity ratio have right values minimize avoid springs reaching end stroke; otherwise, vibrations are transmitted machine operator. Therefore, starting from forced differential equation using approximate solution method developed Den Hartog, along some experimental data, mathematical model was constructed optimize design. After construction, it coupled blades various diameters (0.6, 0.9, 1.2 m) undergo tests. tests highlighted achievement above objectives and, at same time, confirmed validity Hartog equations used calculate phase lag displacement, resulting average error 4.4% 6.4%.