Analysis of the Deflection of Aluminum Profiles for Special Applications Using FEM

The study presents a numerical analysis and experimental verification of deflection of the elements of the band that forms the superstructure of a medium-sized fire-fighting and rescue vehicle. The conducted tests were aimed at the selection of the FEM numerical model enabling the identification of the strain of the structure and the determination of the state of deformation under operational loads. The numerical tool used for the analysis was the Ansys software. Based on the conducted tests, it was possible to identify the key areas of the band in which the occurrence of the highest loads is predicted. The use of a numerical solution allows for determining the safe performance level of the designed element before putting it into production. It allows, among other things, to estimate the maximum deflection of a cross-section of a given length loaded perpendicularly and parallel to the direction of extrusion. The cases analyzed in the work are important from the point of view of their application in the construction of a medium rescue and firefighting vehicle.