This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Modeling and Simulation Study of BAJA SAEINDIA All Terrain Vehicle (ATV) Using Integrated MBD-FEA Approach
Technical Paper
2015-26-0219
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Suspension and chassis play a vital role in the structural performance of an off-road vehicle. The paper focuses on Computer Aided Engineering (CAE) modeling and simulation study of an All Terrain Vehicle (ATV) structure to analyze its static and dynamic behavior. An integrated MBD-FEA approach used for analysis purpose has been presented.
In the study, a Multi Body Dynamic (MBD) model of the ATV suspension system is built using ADAMS/Car. The effect of change in suspension hardpoints on suspension characteristics has been analyzed by carrying out Design of Experiment (DOE) study using ADAMS/Insight. This is done to minimize roll, camber and kingpin angle variation during vertical wheel travel, thus increasing stability of the vehicle under rough road conditions. This helps in optimizing the front and rear suspension geometry of ATV.
The Finite Element (FE) model of ATV chassis is prepared to check its structural integrity. The input loads at body attachment points for FE model are taken from MBD suspension bench test analysis. The input loads for impact analysis are calculated analytically. Since safety of driver depends on structural strength and robustness of chassis, it is important to evaluate the design for all possible load cases (viz., bench and impact loads). Necessary countermeasures are taken in the structure based on stress response.
Finally, various tests like double lane change, constant radius cornering and sine input are performed on full vehicle MBD model to predict its handling characteristics. This includes the steady state (understeer/oversteer behavior and roll angle) and transient (vehicle response-time lag) response. Various road profiles generated virtually in ADAMS/Car are further helpful in understanding the dynamic behavior.
The process methodology depicted in this paper is useful in design and development of ATV for SAE BAJA event. It provides an important feedback regarding vehicle structure during design phase itself well before actual prototype is built.
Recommended Content
Authors
Topic
Citation
Kakria, S., SriHarsha, I., and Wagh, M., "Modeling and Simulation Study of BAJA SAEINDIA All Terrain Vehicle (ATV) Using Integrated MBD-FEA Approach," SAE Technical Paper 2015-26-0219, 2015, https://doi.org/10.4271/2015-26-0219.Also In
References
- Kenedi , P. , de Souza Xavier , L. , Amar de Aguiar , R. , de Oliveira Sampaio , R. et al. Modeling Different Configurations for a Front Suspension of an Off-Road Vehicle Mini-Baja SAE Technical Paper 2004-01-3437 2004 10.4271/2004-01-3437
- Noorbhasha N. Computational Analysis for Improved Design of an SAE BAJA Frame Structure Master of Science Thesis Howard R. Hughes College of Engineering, University of Nevada Las Vegas December 2010
- Oturkar S. , Gujarathi K. An Introduction to Computational Frontal Static Stress Analysis of a Baja Car International Journal of Scientific and Research Publications 3 8 August 2013 2250-3153
- Allen , R. , Szostak , H. , Rosenthal , T. , and Klyde , D. Steady State and Dynamic Properties of All Terrain Vehicles Related to Lateral Directional Handling and Stability SAE Technical Paper 891105 1989 10.4271/891105
- Gillespie , T. Fundamentals of Vehicle Dynamics 1 st Warrendale Society of Automotive Engineers 1992 978-156011999
- Wong , J. Y Theory of Ground Vehicles 4 th 2008 978-0-470-17038-0
- Jazar R. N. Vehicle Dynamics: Theory and Application 1 st 2008 978-0387742434
- Gokhale N. S. Practical Finite Element Analysis Finite to Infinite India 1 st 2008 978-81-906195-0-9
- MSC Software 2011 Documentation and User Guide
- Altair Hyperworks 11.0 Help and Documentation
- SAEINDIA Publication BAJA SAEINDIA 2012, Rulebook