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Effect of Tie Rod Length Variation on Bump Steer
Technical Paper
2016-28-0201
ISSN: 0148-7191, e-ISSN: 2688-3627
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Language:
English
Abstract
Steering and suspension system has to be designed properly to achieve improved handling characteristics. Improper design of steering systems will result in steering errors such as bump steer and roll steer. These steering errors results in reduced steering performance. During the design of steering system the tie rod length has to be properly selected to reduce these steering errors. The purpose of the work is to analyze the effects of tie rod length variation on bump steer. Multi body dynamic model of the selected vehicle was created using MSC ADAMS Car software. Ideal design of steering system to achieve zero bump steer was created. The tie rod length was later varied up to 10% to study the effect of varying length on bump steer. Parallel wheel travel analysis was conducted to study the tie rod length variation on bump steer. Acceleration test was conducted on a flat road having bump to analyze the effect of changing tie rod length on steering performance of the vehicle. The test results were obtained for toe, bump steer, steer force and assist angle with 5% and 10% length variations. For 5% variation, steer assist angle was lower with 0.007deg./mm bump steer. For 10% length variation, bump steer exceeded up to 0.03 deg. /mm with greater steer assist. The results with 5% variation indicated lower bump steer as well as lesser steer assist within the acceptable range. With 10% variation, bump steer and steer assist was much higher with increased steering efforts.
Authors
Citation
Kulkarni, U., Gowda, M., and Venna, H., "Effect of Tie Rod Length Variation on Bump Steer," SAE Technical Paper 2016-28-0201, 2016, https://doi.org/10.4271/2016-28-0201.Also In
References
- Heibing , B. and Ersoy , M. 2011 Chassis Handbook First ATZ, ZF, Springer Fachmedien Wiesbaden GmbH 18 April 2015
- Rajvardhan , R. P. , Shankapal , S. R. and Vijaykumar , S. M. 2010 Effect If Wheel Geometry Parameters on Vehicle Sastech Journal 9 2 18 Feb 2015
- Allen , R. , Klyde , D. , Rosenthal , T. , and Smith , D. Estimation of Passenger Vehicle Inertial Properties and Their Effect on Stability and Handling SAE Technical Paper 2003-01-0966 2003 10.4271/2003-01-0966
- Jadhav , C. and Gautam , J. 2014 Multibody Dynamic Analysis of The Suspension System Using Adams International Journal for Scientific Research & Development 2 03 www.ijsrd.com/articles/IJSRDV2I3632.pdf 18 March 2015
- Cho , Y. and Lee , U. Simulation of Steering Kickback Using Component Load Method SAE Technical Paper 2004-01-1097 2004 10.4271/2004-01-1097
- Burnham , P. 2007 Simulating the suspension response of high performance sport car Altair engineering, McLaren Technology Centre www.altairuniversity.com/wp-content/uploads/2012/08/McLaren-MVMSHSt-4.pdf 14 Feb 2015
- Vivekanandan , N. 2014 Design Analysis and Simulation of Double Wishbone System International journal of mechanical engineering (IIJME) 2 6 www.ipasj.org/IIJME/V2I6.htm 22 Feb 2015
- Pahwa , G. S. 2011 MBD Modeling and Analysis of Front Suspension, Mahindra and Mahindra Auto Sector www.altairatc.com/india/previous-events/2008/04_MBD_Modelling_and_Analysis_of_SUV_Front_Suspension_Mahindra_Mahindra_Auto_Sector.pdf 14 March 2015