Full suspension mountain bike project

Identifier:  TFG:5932

Handle: https://hdl.handle.net/20.500.11797/TFG5932

Authors:  Escarihuela Alcoverro, Arnau

Abstract:
This project is developed within the framework of the realization of the final degree work of Mechanical Engineering at the Rovira i Virgili University, Tarragona, and deals with the design of a double-suspension bicycle frame focused on the enduro discipline. The design process of the frame is based on the study of ergonomic and biomechanical factors related to the requirements of enduro, a cycling discipline focused primarily on descends but which needs to provide some climbing efficiency. From the previous study, a scheme is created with the main heights that define the dimensions of the frame and that provides a starting point for all the other design processes. The suspension system is the next large block of the project. In this case, aspects such as the position of the main joints or the dimensions of the suspension mechanism link are determined on the basis of dynamic behavioral criteria. For this purpose, the generation of a Matlab-language script allows the automatic design of the system just by the introduction of a series of inputs. To complete the design process, the joint junctions of the suspension system are calculated and designed, and from this process the volumetric design of all the components of the frame is carried out with a three-dimensional design program. The same design program is the one that allows the virtual resistance tests to be carried out using the finite elements method, according to the requirements of the rules applied to bicycle frames. Finally, the project includes a temporary planning of the manufacture of a single frame, which can later be related to serial production, and it also includes a financial assessment to verify the economic viability of the project.