Aerodynamic Bicycle

As part of a group project for Georgia Tech’s senior-level CAD course, an aerodynamic bicycle was designed, modelled, and analyzed using various FEA models. Everything was modelled and analyzed in Siemens NX. A priority in this project was taking advantage of NX’s powerful surface modelling tools to create a design that limits drag in the frame and handlebars of the bike, while maintaining structural integrity.​

​

Finite element analysis was used to validate structural integrity and optimize drag performance. When simulating various load cases, such as when a rider is standing on the pedals or when a rider is applying pressure (~15% of bodyweight) on the handlebars, the designed frame never deformed more than 0.05 mm, and the handlebars had a max deformation of 9 mm (when torsion is applied directly on the handlebars). CFD was used to determine airflow throughout the frame and handlebars, and determine the drag coefficient the bike would experience when used in races. The design had a drag coefficient of around 0.17. Most aerodynamic bicycles have a drag coefficient of around 0.15-0.16.