Diagnostics of the airless wheel by the combined method

Abstract

For construction and road machinery, tubeless tires made on the basis of elastic polyurethanes are being used more often. The diagnosis of airless tires made of elastic polymer materials in order to determine the conditions of their safe operation is becoming more and more relevant. The use of roller stands does not give accurate results, because the round support surface of the rollers introduces distortion. A method of obtaining basic parameters and characteristics on simple stands is proposed. Use their values for tire research and diagnostics in software environments such as Ansys, Solidworks, AutoCad. For the designed and manufactured sample of an airless wheel on the stands, the dependences of the change in the static radius of the wheel depending on the load and the change in the deflection of the wheel depending on the lateral force at different loads on the wheel were obtained. They became the basis for the initial parameters and characteristics of the wheel modeled in the Solidworks environment. Its properties were simulated for three cases of wheel rolling: “driven wheel”, “driving wheel” and “free wheel”. The obtained results show that the most difficult mode is the movement of the wheel on the deformable support base. In this mode, the opposite sides of the spokes work in tension and compression when blowing the spokes to a vertical state. The values of stress do not exceed the critical allowable ones during rupture or during compression for polyurethane. Therefore, it can be diagnosed that the wheel is in satisfactory condition.