The two-dimensional contact numerical simulation of smooth and concave bionic spur gears is carried out by using the finite element analysis software ANSYS, and the comparative analysis of contact equivalent stress and contact stress is carried out.
Using CAXA electronic drawing board, the two-dimensional contact contour model of large and small gears is established, and the line body model is imported into ANSYS. Using the function of generating surface from line in Boolean operation, the two-dimensional contact solid modeling of spur gears is completed, and the two-dimensional contact finite element analysis models of smooth and concave spur gears are established respectively; The contact type is defined as line to line contact, using two-dimensional target unit targe169 and two-dimensional contact unit conta172; The two-dimensional contact numerical simulation of smooth and concave bionic spur gears is carried out.
Using the graphic display function of ANSYS general post processor, the two-dimensional contact equivalent stress and contact stress distribution nephogram of smooth spur gear are obtained, and the stress variation in the contact area is analyzed; Using the same method, the two-dimensional contact equivalent stress and contact stress distribution nephogram of concave spur gear are obtained, and the stress of concave spur gear and smooth spur gear are compared and analyzed; The maximum values of equivalent stress and contact stress appear at the contact position between the top of the big gear and the root of the pinion, and the stress distribution range of the contact area of the big and small gears is obtained.