Simulation Research on Cotton Stalk Cutting and Crushing Based on ANSYS/LS-DYNA and Field Experiments

In order to solve the problem of high straw content in recovered residual film and low rate qualified crushing combination with a front-mounted cotton-straw-crushing device, cutting mechanisms cotton stalks were studied based on ANSYS/LS-DYNA. The height h dip angle α fixed blade determined be 30 mm 75° through finite element analysis. On basis device design, explicit dynamic models single stalk established results analysis revealed mechanism stalk, influences edge γ front baffle h1 by using single-factor simulation tests. An = 45° 265 determined. Meanwhile, was revealed, motion states at different times. experiments influence cutter shaft’s rotational speed showed that an increase speed, removal both increased. At design n 1800 RPM, 84.6%, 95.1%. Then, field carried out. test as follows: stubble 8.0 cm, 91.8%, clearance film-surface impurities 92.3%, 3.6%, which met working quality requirements (not less than 85%) NYT 500-2015: “Operating for straw-smashing machines”.