The virtual load case definition for off-road vehicles: Methodology based on multibody system simulation

The methodology for setting up a multibody system for a tractor, incorporating an advanced tire model is presented and discussed. The goal is to obtain precise load and boundary conditions for the finite element analysis, which in turn aids in predicting fatigue life. Additionally, the generated loads and boundary conditions are used to define a test procedure with hydraulic actuators, aiming to replicate field damage values for the relevant components as precisely as possible. As a result, a consistent simulation process extended from the early design stage to the prototype test phase is presented in this contribution. Furthermore, all the results achieved with this methodology are confirmed by measurements.

REFERENCES (12)

Abaqus. Version: V2021FP2346. Retrieved July 13, 2025, from https://www.3ds.com/products/s....

Google Scholar

Adams. Version: v2021.0.1. Retrieved July 13, 2025, from https://hexagon.com/products/p....

Google Scholar

Bayerische Transformations- und Forschungsstiftung (2021). Traction on demand (in German). https://www.forschungsstiftung....

Google Scholar

FEMFAT. Version: 2022.1. Retrieved July 13, 2025, from https://femfat.magna.com.

Google Scholar

FTire. Version: 2021-1. Retrieved July 13, 2025, from https://www.cosin.eu.

Google Scholar

Fuchs, W., & Pauschenwein, G. (2019). From field path profile detection to component testing. ATZheavy duty worldwide, 12 (2), 50–55. https://doi.org/10.1007/s41321....

CrossRef

Google Scholar

Gipser, M. (2007). FTire – the tire simulation model for all applications related to vehicle dynamics. Vehicle System Dynamics, 45 (sup 1), 139–151. https://doi.org/10.1080/004231....

CrossRef

Google Scholar

Jedinger-Pauschenwein, G., Fuchs, W., & Holl, H. (2024, September 24–27). Virtual load case definition for off-road vehicles: Methodology based on multibody system simulation [Conference presentation]. 40th Danubia-Adria Symposium on Advances in Experimental Mechanics, Gdańsk, Poland.

Google Scholar

Popp, K., & Schiehlen, W. (2010). Ground vehicle dynamics. Springer.

Google Scholar

10.

Renius, K.T. (2020). Fundamentals of tractor design. Springer.

Google Scholar

11.

Schiller, S. (2018). Tractor global loading, method optimization [Master's thesis, University of Applied Sciences]. Upper Austria.

Google Scholar

12.

Shabana, A.A. (2013). Dynamics of multibody systems (4th ed.). Cambridge University Press.

Google Scholar