Investigation of the stress-strain state of a prismatic damping element

Abstract

Problem. Among the main problems that arise when solving new problems there is the justification of choosing the calculation scheme of the object under consideration and the reliability of the obtained results. Goal. Often, the calculation of spatial prismatic structures is carried out within the framework of a flat design, which is due to the high complexity of solving a three-dimensional problem. Methodology. However, this simplification of the calculation scheme, based on the hypothesis of the constancy of the parameters of the stress-strain state along the length of the body, may lead to an incorrect assessment of the operating conditions of the structure. Results. This is especially dangerous for responsible highly loaded elements and parts, therefore, it is necessary to take into account all factors affecting the spatial nature of the stress-strain state of the structures under study. Originality. The substantiation of the reliability of solving new problems by the finite element method is carried out, first of all, by successive thickening of the calculation grid area. Practical value. It should continue until a slight change in the results begins to be observed with a significant increase in the number of elements. It should be noted that the capabilities of the traditional version of the FEM in this regard are quite limited, and when it is used, this requirement is basically not fulfilled. Practical meaning. The purpose of this study is to determine the spatial picture of the stress-strain state of the damping element during operation and to compare the spatial solution with the flat one. Comparing the parameters of the stress-strain state of the workpiece during work, obtained in flat and spatial settings, allows us to conclude that the research must be carried out on the basis of spatial calculation.