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Numerical Methodology for Evaluating Side Impact Effects in Rally Car
Technical Paper
2007-01-0950
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In rally competition cars, the safety of vehicle occupants is currently projected without precise regulations. In order to reduce design time and control testing costs, finite element approaches and numerical comparisons between different solutions are used to reduce costs and improve performance.
Within, a methodology and case study for attainting this goal are proposed. Using a numerical model of a rally car, different materials are compared and design indications are noted.
A numerical non-linear model of half of a competition car roll-cage and its related door parts is built, in order to simulate the dynamics of lateral impact with a tree. Several numerical tests are conducted with the different absorbent materials and with different design solutions. Based on the deformation energy and acceleration of the roll-cage structure, an evaluation criterion is proposed.
The presented methodology allows finding the best compromise of lightness and energy absorption in designing the lateral part of car chassis.
Authors
Citation
Bonisoli, E., Rosso, C., and Delprete, C., "Numerical Methodology for Evaluating Side Impact Effects in Rally Car," SAE Technical Paper 2007-01-0950, 2007, https://doi.org/10.4271/2007-01-0950.Also In
CAD/CAM/CAE Technology, Digital Modeling, Virtual Development and Engineering
Number: SP-2072; Published: 2007-04-16
Number: SP-2072; Published: 2007-04-16
References
- Nakagawa K. Ootsubo T. “Crash Simulation of a Passenger Car” SAE Paper No. 900464
- Ando K. Nakagawa K. Araki T. “Impact Simulation of the Cfrp Structure for a Gt-Car” SAE Paper No. 2003-01-2768
- Kirkpatrick S. W. “Development and Validation of High Fidelity Vehicle Crash Simulation Models” SAE Paper No. 2000-01-0627
- European New Car Assessment Program,“Pole Side Impact Testing Protocol” Version 4.1 March 2004
- FIA Sport Technical Department,“Homologation regulations for SUPER 2000 KIT-variant (RALLIES) ” FIA 2006
- ASTM D 3574-03, “Standard test method for flexible cellular materials-slab, bonded, and molded urethane foams” test C “Compression force deflection test”