STUDY OF STRESSES AND DEFORMATIONS OF THE TRUNNION OF THE SUPPORT UNIT USING THE NUMERICAL METHOD

The article presents the analysis of the main characteristics of mechanical properties of solids - deformations and stresses arising under the influence of temperature on the internal and external working surfaces of the journal of the support unit of a ball tube mill. The article considers the thermal properties of the journal, which characterize the behavior of this part under the action of thermal fields. It is established that a change in the stress-strain state of the journal of the support unit affects the performance of the mill unit during its operation, therefore, this problem is important in terms of increasing the efficiency of material production. Using numerical methods, the deformation process of the journal of the support unit, steel 35L GOST 977-88, was studied taking into account the variation of the temperature field in the mating zone, and the stresses of the mating surfaces were investigated. Equations are given that describe stress changes in different directions with the adopted variation of the temperature parameters of the external and internal surfaces of the journal. Graphical results of the modeling are presented. It was found that the journal is affected by the gravity forces of the rotating drum with grinding bodies and material loading, and the temperature in the working area changes, and its state is characterized as complex stress-strain, equivalent stresses and strains were determined using intensity. Calculations of the strain intensity were performed based on the difference in the main strains.