A Two Degree of Freedom Damped Fruit Tree Model
Keywords:fruit tree, modelling, mechanical shaking, shaker machine
A simple two degree of freedom fruit tree model was built and some of its behaviour was compared with real cherry trees. The model represented from one hand the rooting system with a certain amount of soil and of the trunk, from the other hand the main branches and limb. The calculated results for the model have shown good accordance with the test results of the measured real tree: in both cases two peaks in the amplitude and acceleration vs. frequency diagrams were clearly recognizable. Using the equation of the model the effect of shaker parameters and shaking frequency can be studied, which enables more accurate design of the shaker machine.
VI-Postharvest Technology and Process Engineering