In this thesis work, we want to cascade vehicle targets to tire characteristics and create a design space of feasible tire characteristics.
Thesis Worker at Volvo Cars
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Handling and steering performances characterizes the driving DNA of a vehicle. It comprises of a complex vehicle performance matrix that describes the agility, predictability, controllability, steerability and stability.
When designing the chassis systems from the overall planned characteristics of the car, it is important to consider all the involved vehicle performance matrix simultaneously . The planned characteristics of the car are also called key performance indicators (KPI), the target of which constitute the DNA of an automotive brand. Several KPI requirements are contradictory and identifying these factors and their functional region is a critical task. The synthesis can be performed using simple models to choose wheel suspensions, steering and braking systems .
The same concept can be cascaded to tyres. Tyres play a critical role for passenger cars, as they are the sole interface between the vehicle and the road. They have direct impact on vehicle performance, including ride quality and handling behaviour. The dimension choice, the design construction, the rubber compound all influence the force-moment characteristics of the tyre. The tyre properties that satisfy the vehicle KPI target are considered feasible. These set of tyre properties constitute the tyre design space.
Cascading the vehicle KPI to tyre KPI in early phase of vehicle design allows for an interactive chassis-tyre development in the early phase, create synergy across vehicle platforms and reduce complexity. In this thesis work, we want to cascade vehicle targets to tire characteristics and create a design space of feasible tire characteristics.
The thesis will include:
1. Literature survey
2. Understanding and deriving vehicle KPI
3. Analytical cascading vehicle KPI to tyre design space
4. Performing sensitivity study on vehicle KPI with respect to tyre properties using stochastic approach
5. Compute tyre design space using multi-disciplinary multi-objective optimization tool
6. Verify the analytically derived tyre design space with that from optimization tool
Cascading vehicle targets to feasible tire characteristics
Your contribution is our future
The successful candidates are expected to be master students from mathematics, engineer, mechanical engineering and/or vehicle engineering. You should be self-motivated and explorative. You have a strong mathematical and analytical background and an interest in vehicle dynamics. The thesis requires the students to be physically presented in Gothenburg, Volvo Cars Corporation
• The work will start January 2023 and continue 20 weeks.
• 1 to 2 students. This diploma work gives 30 points/student.
Be part of the change – apply today!
Selection will be ongoing during the application period, so do not hesitate to send in your application. Attach your CV and personal letter stating your interests within the given area and your thoughts and credentials.
Apply as soon as possible but no later than 17th of October.
Please note that due to GDPR, applications via email will not be accepted.
 Wedlin, J., Tillback, L., and Bane, O., ”Combining Properties for Driving Pleasure and Driving Safety: A Challenge for the Chassis Engineer,” SAE Technical Paper 921595, 1992, https://doi.org/10.4271/921595.
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