Experimental Evaluation of Cutting Dynamic Models in Soil Bin Facility

Computer Aided Engineering methods in earthmoving machines design and their automation require the developrnent of soil cutting models. These models both in two or three dimension, static or dynamic, fitted for frictional and cohesive soils, must be mutually compatible and must accomplish with soil transportation models and with machine locomotion characteristic models. In this work two different methods of soil cutting have been evaluated, both of them based on the classical wedge method, in order to verify their applicability to test conditions in the new soil bin facility of CEMOTER. From experimental results we try to point out the possibility of using dynamic models of soil cutting in frequency domain to improvee earthmoving machinery performance by automation and implements open and closed-loop centrol. After a preliminary analysis of some plane blades under different test conditions and in sandy soil with different cohesion factors, soil cutting theoretical models of some simple implements are compared with respective scale models by tests performed in soil bin facilit;y at various operating speed and depths.