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Multi-Physics Modeling of a Cab Suspension System with Fluid Filled Mounts
Technical Paper
2012-01-1912
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper presents a novel 6-DOF multi-physics model of a cab suspension system. The model consists of a cab with six degrees of freedom supported by four fluid filled viscous mounts. In the literature, to the best of the authors' knowledge, all 6-DOF cab models have simplified fluid filled mounts as spring damper combinations. In its best case, a nonlinear stiffness relationship is allowed in the simplified models to capture the nonlinear behavior of the mounts and include geometric constraints and hard-stops. The novel model presented in this paper, however, includes a multi-physics model of the mounts. Each mount is represented by a molded assembly, two fluid chambers, a fluid track that connects the two chambers, and a gas chamber. Each mount can be pressurized or vented. A simple cavitation model is also used as an indicator of fluid cavitation in each mount. Additionally, all acceleration terms including cross-coupled and normal component accelerations are included in the 6-DOF model. Therefore, all nonlinear effects in various translational and rotational directions can be studied. This comprehensive cab model allows design engineers to choose fluid filled mount design parameters and mounting locations using a global design tool. The effects of a few design parameters on the overall response of the cab are studied and presented.
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Citation
Farjoud, A., Marcu, F., and Schumann, E., "Multi-Physics Modeling of a Cab Suspension System with Fluid Filled Mounts," SAE Technical Paper 2012-01-1912, 2012, https://doi.org/10.4271/2012-01-1912.Also In
References
- Venkataraman, K. Sankar, S. Computer-aided free vibration analysis of cab suspensions in tracked vehicles Computers in Engineering Conference 1990 ASME International Boston, MA 85 93
- Ibrahim, I.M. A generally applicable 3D truck ride simulation with coupled rigid bodies and finite element models International Journal of Vehicle Design 2004 11 1 67 85
- Yang, C. Shi, W. Wang, K. Vibration Analysis of Commercial Vehicle Cab Suspension and DOE Optimization International Conference on Computer, Mechatronics, Control and Electronic Engineering (CMCE) 2010 430 433
- Potts, G.R. Walker, H.S. NONLINEAR TRUCK RIDE ANALYSIS American Society of Mechanical Engineers 1973
- ElMadany, M.M. NONLINEAR RIDE ANALYSIS OF HEAVY TRUCKS Computers and Structures 1987 25 1 69 82
- ElMadany, M.M. An analytical investigation of isolation systems for cab ride Computers and Structures 1987 27 5 679 88
- Ahmadian, M. The noise and vibration benefits of soft-mounted locomotive cabs Proceedings of the 2001 IEEE/ASME Joint Railroad Conference, 17-19 April 2001 2001 Piscataway, NJ, USA IEEE
- Ahmadian, M. Vahdati, N. Practical issues in quieting locomotive cab interior Proceedings of the 2006 Joint Rail Conference, 4-6 April 2006 2006 Piscataway, NJ, USA IEEE
- Ahmadian, M. Venezia, J.J. An experimental evaluation of noise and vibrations in modern locomotive cabs Proceedings of the 2000 ASME/IEEE Joint Railroad Conference, 4-6 April 2000 2000 Piscataway, NJ, USA IEEE
- Vahdati, N. Double-notch single-pumper fluid mounts Journal of Sound and Vibration 2005 285 3 697 710
- Nakhaie Jazar, G. Golnaraghi, F. Engine mounts for automotive applications: A survey Shock and Vibration Digest 2002 34 5 363 379
- Yunhe, Y. et al. Automotive vehicle engine mounting systems: a survey Transactions of the ASME. Journal of Dynamic Systems, Measurement and Control 2001 123 2 186 94
- White, F.M. Fluid Mechanics 2011 New York McGraw Hill 862