VIBRATION AND STRAIN SIGNAL ACQUISITION FOR NUMERICAL SIMULATION OF A COFFEE HARVESTER

Coffee harvesters utilize vibration systems to dislodge coffee beans. The system is usually coupled the end of an axis (rod cylinder). This cylinder can fail in field, which occurs by means cracks close its flange region that promotes vibration. Numerical simulations are typically used predict strains and stresses based on signals machines general. work acquired strain a harvester rod prototype compared results using finite element analysis. To this end, was prototyped reduced scale (1:3) recreate frequency data, were for numerical simulation comparisons. showed predicted von Mises stress analyzed zone 16.47 MPa (below material yield strength, 250 MPa) 14.2 Hz applied cylinder. confirmed found cylinders field not generated high stresses, as reported literature. demonstrated potential analysis prediction when agricultural machine components.