Análise numérica via método dos elementos finitos de uma gancheira de bicicleta em liga memória de forma

Abstract

This work aims to perform a numerical analysis through the finite element method of a bicycle derailleur hanger prototype made of shape memory alloy. The hanger is a connecting element between the rear derailleur and the bicycle frame, being responsible for absorbing impacts and being sacrificed in case of excessive stress, saving the higher value components that attaches. A similar geometry prototype was developed for the analysis and through the ANSYS® 2019 R3 Workbench, a commercial finite element software with integrated shape memory alloy support, conditions were simulated to the component so that it suffered a deformation that compromised the bicycle gear shift system. The results showed that with warming up of this component it will have its pre-set shape again, free of residual stress, making the component suitable again for use without compromising athlete performance and gear shifting.