COMPARISON OF THE ANALYTICAL APPROACH WITH THE FINITE ELEMENT METHOD FOR DETERMINING THE NATURAL OSCILLATION FREQUENCIES OF A CYLINDRICAL SHELL

The article explores the possibility of using the Ansys software package to model slabs designed as beams manufactured using a 3D printer. To evaluate the effectiveness of this model, a numerical experiment was conducted, during which the beam structure was subjected to a destructive load. The simulation results were compared with the results of a physical experiment to verify the accuracy of the model. The input data for the calculation were based on parameters similar to those of an experiment conducted by Diego Veloso at the University of São Paulo, where a truss beam was studied. The model was built using both solid and beam elements, with loads applied to the nodes of the model as distributed forces over the area, replicating the conditions of the full-scale experiment. The calculation results revealed that the failure of the beam begins when the load on the nodes reaches 500 kg. In a full-scale experiment, the destruction occurred when a load of 700 kg was reached.These data coincide with the results of the full-scale experiment, confirming the accuracy of the chosen modeling method. Thus, the proposed calculation method can be successfully applied to the design of load-bearing elements of buildings constructed using layer-by-layer 3D printing with construction printers.