Dynamic Simulation for PrISUm Solar Car using CATIA V5 and Dymola
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Date
2019-12
Authors
Suiter, Elliot
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Steward, Brian
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Abstract
Computer simulation is useful in the iterative design process for saving time and producing accurate results. CAD design software coupled with simulation software can be useful in determining the characteristics of a dynamic system such as a vehicle suspension, before any physical models are constructed. PrISUm Solar Car is a team of students at Iowa State University which designs suspension systems for a new solar car every two years. The main objective of the project was understanding how Dassault Systems products would integrate and handle the CAD and dynamic simulation needs of PrISUm Solar Car. CATIA V5 solid modeling and Dymola simulation software were used in this project and compare to Autodesk Inventor 2020 currently used by the team. The dynamic system analyzed the suspension of Eliana, a solar car which will race in 2020 and 2021. Through this project, the process for using Modelica and Dymola was learned and applied to the suspension system of Eliana. It was found that the current CAD platform (Autodesk Inventor) performed better than CATIA V5 for the needs of PrISUm Solar Car. Dymola proved quite useful in calculating spring and damping rates needed for the vehicle, a process which is currently analytically solved. Following simulation, spring and damper recommendations can be made to the team and parts may be specked out for purchase. Recommendations were also made for expanding the dynamic quarter car model to a full vehicle model to determine vehicle ride characteristics.
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