Faculté des Sciences appliquées
Faculté des Sciences appliquées

Development of a race car simulationmodel for performance optimisation

Ledent, Nicolas ULiège
Promotor(s) : Duysinx, Pierre ULiège
Date of defense : 6-Sep-2018/7-Sep-2018 • Permalink :
Title : Development of a race car simulationmodel for performance optimisation
Translated title : [fr] Développement d'un modèle de simulation pour voiture de course en vue d'optimiser la performance
Author : Ledent, Nicolas ULiège
Date of defense  : 6-Sep-2018/7-Sep-2018
Advisor(s) : Duysinx, Pierre ULiège
Committee's member(s) : Bruls, Olivier ULiège
Collette, Christophe ULiège
Collès, Jean-Hubert 
Language : English
Number of pages : 112
Discipline(s) : Engineering, computing & technology > Mechanical engineering
Engineering, computing & technology > Electrical & electronics engineering
Institution(s) : Université de Liège, Liège, Belgique
Degree: Master en ingénieur civil mécanicien, à finalité spécialisée en technologies durables en automobile
Faculty: Master thesis of the Faculté des Sciences appliquées


[en] This master's thesis threats the subject of simulation in the automotive industry and especially
in motorsport. Indeed, simulation is very important in motorsport for the teams to prepare races,
for the drivers to train and during races to take all of the performance out of the car. It is not
developed in GT racing and, thus, not in Team WRT. The goal of this project was, thus, to start
the development of a model as general as possible that could be re fined afterwards to become closer and closer to the real car.
Different software products can be used to simulate cars but the one chosen by the team was
Matlab/Simulink. Some models based on the equations of motion coming from different books
have been developed but the decision was then made to shift to Simscape, and especially Simscape Multibody, with the ability of modelling physical systems in the Simulink environment. This shift was pushed by the desire of the team to follow the trend in mortorsport of using the physical modelling features of the simulation software packages.
Based on data provided by the manufacturer, a single suspension model was built in Simscape
Multibody by forming an assembly of elements linking the different suspension points. The focus
was made on building a model as general as possible to be able to follow the evolutions on the car or to use the model for an other car. This was done by relying on the suspension fixation points giving a model that can be adapted easily by changing those points. As the results matched the manufacturer's data, a model of a whole axle could be developed by using two single suspension models, one for each side, and a chassis linking the suspensions. This model also proved to match the manufacturer's data.
Eventually, following the logical evolution of the models, a complete model was built using two
axle models and a chassis part linking the axles. In this model, some features able to set auto-
matically different settings on the car such as camber angle or ride height were developed with the aim of building a complete set-up tool that could give advices on set-up changes to the mechanics. Unfortunately, a complete, usable, and trustful set-up tool wasn't achieved because of the necessity to put some more effort in different areas that are crucial to obtain an accurate representation of the car.
In conclusion, a general model of the car run by Team WRT based on the suspension fixation points was developed using the physical modelling software Simscape Multibody. This model matches the data provided by the manufacturer but some more efforts are still needed in crucial areas to represent the car in an accurate way.



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  • Ledent, Nicolas ULiège Université de Liège > Master ing. civ. méc., à fin.


Committee's member(s)

  • Bruls, Olivier ULiège Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire des Systèmes Multicorps et Mécatroniques
    ORBi View his publications on ORBi
  • Collette, Christophe ULiège Université de Liège - ULiège > Département d'aérospatiale et mécanique > Active aerospace struct. and adv. mecha. systems
    ORBi View his publications on ORBi
  • Collès, Jean-Hubert WRT W-Racing Team
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