Modal analysis of bionic convex teeth rolling component composed of different materials

To investigate effects of bionic convex teeth rolling component composed of different materials, on adhesion-reducing and micro-basin processing performance, with the assist of Autodesk Algor Simulation software, modal analysis of rolling components made from cast iron material and UHMWPE-cast iron combinatorial material was performed. Using the anterior 8 ranks of modals, the natural frequency and maximum amplitude of the two types of rolling components were compared. It was found that at the anterior eight ranks of modal, the maximum amplitude at each ranks of UHMWPE-cast iron combinatorial material rolling component was higher than that of cast iron material, the increment was between 5.716 and 30.077 mm. Moreover, combinatorial material rolling component could reach higher amplitude at relatively lower natural frequency. Furthermore, near the center of the wheel disk, the average amplitude was 0.213 mm less than that of cast iron rolling component. The results show that compare with cast iron material rolling component, UHMWPE-cast iron combinatorial material rolling component can acquire the better adhesion reduction ability on the convex teeth, ensure the structural strength of the depressions on soil surface and have enhanced stability at the center of the wheel disk. These findings can give indications to the choice of materials for bionic convex teeth rolling component, speed setting for tractor and design of the excitation device on rolling components.