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Технически университет - София

Abstract: The paper deals with the design and production processes of a velocity stack for the intake system of a racing car’s engine. The velocity stack was created using FDM 3D printing (additive manufacturing). This production technology, combined with the use of heat-resistant polymer materials, is gaining popularity in the automotive industry, because it saves significant amount of time and financial resources. In the paper firstly the advantages and disadvantages of the velocity stack are discussed, then its structural and production parameters are presented. In order to prevent resonance in the car and thus to prevent damage, it is important to know the natural frequencies of all its elements. For this reason, an analysis was made of the first two natural frequencies of the produced velocity stack, both in a simulation software environment and experimentally. As a conclusion the results from the studies are presented and compared.

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