The significance of high-order dynamics in lap time simulations
The significance of high-order dynamics in lap time simulations
This work aims to study which level of detail should be preserved in the multi-body modelling of a racing car in order to obtain reliable results without excessive model complexity. Three multibody models have been developed and compared through optimal control simulations. The models differ from each other for the order of dynamics comprised: starting from a 14 degrees of freedom (dof) car which includes chassis and wheels motion, a 10 dof model model is obtained by neglecting the wheels hop dynamics, finally a 7 dof model is derived by completely eliminating the suspension motion. Optimal control problem simulations, including parametric analyses varying the center of mass position and suspensions stiffness, have been executed on a full lap on the International circuit of Adria. Simulations results show that the 10 dof model gives almost the same results of the 14 dof one, while significantly reducing the computing time. On the contrary, the basic 7 dof model highlights remarkable differences in both the parametric analysis, suggesting the dynamics has been over-simplified.
Lot, Roberto
ceb0ca9c-6211-4051-a7b8-90fd6f0a6d78
Dal Bianco, Nicola
8bd1d29c-cce5-407d-82c5-e88504417658
17 August 2015
Lot, Roberto
ceb0ca9c-6211-4051-a7b8-90fd6f0a6d78
Dal Bianco, Nicola
8bd1d29c-cce5-407d-82c5-e88504417658
Lot, Roberto and Dal Bianco, Nicola
(2015)
The significance of high-order dynamics in lap time simulations.
IAVSD 2015: 24th International Symposium on Dynamics of Vehicles on Roads and Tracks, Graz, Austria.
17 - 21 Aug 2015.
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Conference or Workshop Item
(Paper)
Abstract
This work aims to study which level of detail should be preserved in the multi-body modelling of a racing car in order to obtain reliable results without excessive model complexity. Three multibody models have been developed and compared through optimal control simulations. The models differ from each other for the order of dynamics comprised: starting from a 14 degrees of freedom (dof) car which includes chassis and wheels motion, a 10 dof model model is obtained by neglecting the wheels hop dynamics, finally a 7 dof model is derived by completely eliminating the suspension motion. Optimal control problem simulations, including parametric analyses varying the center of mass position and suspensions stiffness, have been executed on a full lap on the International circuit of Adria. Simulations results show that the 10 dof model gives almost the same results of the 14 dof one, while significantly reducing the computing time. On the contrary, the basic 7 dof model highlights remarkable differences in both the parametric analysis, suggesting the dynamics has been over-simplified.
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ConferencePaper - The significance of high-order dynamics in lap time simulations.pdf
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Published date: 17 August 2015
Venue - Dates:
IAVSD 2015: 24th International Symposium on Dynamics of Vehicles on Roads and Tracks, Graz, Austria, 2015-08-17 - 2015-08-21
Organisations:
Energy Technology Group
Identifiers
Local EPrints ID: 379472
URI: http://eprints.soton.ac.uk/id/eprint/379472
PURE UUID: 1e7346a7-d9fa-4df8-ad7c-fb7d8aea6921
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Date deposited: 30 Jul 2015 13:18
Last modified: 14 Mar 2024 20:42
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Contributors
Author:
Roberto Lot
Author:
Nicola Dal Bianco
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