My Subject
AIMS
This research proposal concern the development of computer based tools which could be used by tyre and anti-lock braking system (ABS) designers in the development of new vehicles. Simulations will be carried out using the ADAMS program. The overall aim will be to generate a full vehicle simulation model, which includes a tyre model, which can handle combined cornering and braking. The ABS system will be simulated by developing subroutines and linking these with the ADAMS full vehicle simulation model. The full vehicle model must be able to handle changes in road conditions and provide a means of investigating the influence of suspension and tyre models on the ABS performance.
RELATIONSHIP TO PREVIOUS WORK
It is not intended to write software for solving the equations of motion of the vehicle as there is already a range of software available (1) The software to be used in this project will be the ADAMS (Automatic Dynamic Analysis of Mechanical Systems) program which is used extensively within the automotive industry. This work links into current research programmes by M. Blundell (2) and A. Mackie (3) within the School of Engineering. These studies are based on the Rover 800 vehicle. The work by M. Blundell will have an input to this programme in terms of the methods used to model the suspension systems and tyre characteristics. A variety of tyre models and computational methods have been developed and it is envisaged that the Pacejka tyre model (4) will be investigated and if necessary adapted for the simulations involved in this study. This work will extend the current study by A. Mackie which is based on quarter vehicle modelling and developing simulation tools for ABS. modified such that they are applicable to the type of simulations involved in this study. In this study the work will go on to develop a full vehicle model and simulate combined braking and cornering with ABS systems.
METHODOLOGY
The project will involve theoretical study of the mechanics of tyres. The method of operation of ABS and the use of computer software for handling simulations. A full vehicle model based on data for the Peugeot 605 will be developed and used to simulate the braking manoeuvres carried out with a test vehicle. It will also be necessary to carry out rig testing in order to acquire vehicle data.
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