ДОСЛІДЖЕННЯ НАПРУЖЕНО-ДЕФОРМОВАНОГО СТАНУ ПРИЧАЛЬНОГО КОНТЕЙНЕРНОГО ПЕРЕВАНТАЖУВАЧА ЧИСЕЛЬНИМ МЕТОДОМ

Abstract

The paper considers the approach to the estimation of the stress-strain state of a lifting-transport machine, which has been in operation for a long time, with the introduction of mathematical modeling, namely, the introduction of the finite element method for determining the stress fields and the identification of the most dangerous zones during the operational load. Experimental data were used to obtain real loads occurring in the crane metalwork. A review of the sources shows that the elements of the metalwork of all cranes have a personal prior history of strength and deformation, which is difficult to overestimate, especially the cranes that have been in operation for decades. It is substantiated that the parameters of stiffness and strength determined in the material exceed the permissible error of linear and angular dimensions. Obviously, modern calculations of metal structures should be carried out with the obligatory application of numerical experiment and determination of mechanical parameters by computer methods to ensure the operation of cranes without damage. On the basis of the obtained results, conclusions were drawn about the current state of the crane's metalwork and the conditions for the possibility of further operation of its crane. Hazardous locations in the crane metal structure have been identified, which can be a source of destruction, for further measurements of the physical properties of the metal and the conclusion in the state of the Crane metal structure. The model of the mooring container reloader was created with the introduction of the Solid Works software package. The metal structure of the mooring container reloader was calculated numerically using CAD. The stressed and deformed state in accordance with the requirements for hoisting-and-transport machines were determined. Hazardous locations in the crane metal structure, which can be a source of destruction, have been determined to further measure the physical properties of the metal and to conclude on the state of the crane metal structure. The proposed method of solving the problem can be applied in most cases of trucks.