Suspension system calculation and design of the Formula Student ETR-04 single-seater

Abstract

The objective of this project is the study, calculations and design of the Formula Student ETR-04 single-seater suspension system. The ETR-04 is the fourth electric racing vehicle designed and built by the e-Tech Racing team from the Barcelona East School of Engineering and is the vehicle for which the suspension system described in this paperhas been designed and studied in this project. This car participated in the ninth edition (2018) of the Formula Student Spain (FSS). The Formula Student is an international competition in which several world universities design and manufacture a competition single-seater which presents different independent events, but within the same regulatory rules; either electric or combustion. To get the best possible score designs have to be made to optimizeperformance in all the tests in which each vehicle is scored. Single-seatersaredesigned to compete in Formula Student are evaluated in two test modes, static (in which each team is evaluated by the design of its vehicle, the ability to attract investors to the project and the economic aspects of the execution of this design) and dynamic (in which the performance of the car in different tests is evaluated). Throughout this design process, special consideration has been given to all the tests in which the vehicle will be evaluated, as well as the optimizationof the overall performance of the single-seater, with special consideration given to the balance between all the subsystems which are part of a vehicle with these characteristics.