This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Finite Element Modeling and Analysis of Hydro Gas Suspension System for Temperature Rise Behavior
Technical Paper
2007-01-0141
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Hydro gas suspension system is extensively used in armoured fighting vehicle due to excellent ride characteristics, non-linear spring and effective damping characteristics. The suspensions have to withstand high loads and temperatures encountered during a typical vehicle mission. The suspension units are subjected to extensive testing for its performance before fitment into the vehicle. The tests involve measurement of spring characteristics and damping behavior. The damping behavior i.e. energy dissipation as heat is measured by observing the temperature rise pattern in the unit. During the experimental testing it is observed that the temperature rise is very severe in some units and mild in the others. Heat generation in a suspension unit is caused by gas compression, viscous energy dissipation and seal friction. Heat dissipation takes place by various modes of heat transfer. In this paper a Finite Element model of the unit is created to study the thermal behavior of suspension unit. The steady state and transient thermal analysis at various ambient conditions would help to understand the chief mode of heat transfer involved and suggest optimizing the design of the suspension unit. The analysis has indicated that inevitable temperature rise is chiefly due to damping energy dissipation and irreversible polytropic gas compression; and conduction is the chief source of heat dissipation.
Recommended Content
| Technical Paper | Self-Energizing Hydropneumatic Levelling Systems |
| Technical Paper | Numerical Modeling of Vane Oil Pump with Variable Displacement |
| Technical Paper | Failure Mode Analysis of Automotive Exhaust System Hot End |
Authors
Citation
Rabibunnisa, H. and Akilandeswari, P., "Finite Element Modeling and Analysis of Hydro Gas Suspension System for Temperature Rise Behavior," SAE Technical Paper 2007-01-0141, 2007, https://doi.org/10.4271/2007-01-0141.Also In
References
- Els P S Grobbelar B Time and Temperature Dependency of Hydropneumatic Suspension Systems SAE Technical Paper Series no. 930265 Vehicle Suspension and Steering Systems SAE SP- 256 1993 55 65
- Els P S Grobbelar B Heat transfer effects on hydropneumatic suspension systems Journal of Terramechanics 36 4 October 1999 197 205
- Giliomee C L Analysis of a four state switchable hydropneumatic spring and damper system Department of Mechanical and Aeronautical Engineering University of Pretoria 2003
- Ramesh Swarna Sundaresh S Singaperumal M Investigations into the Hysteretic Characteristics of Hydrogas Suspension System used in Armoured Tracked Vehicles, Fluid Power Technology Proceedings of International Conference EMCHAFT 2005 Nov 2005 India
- Akilandeswari P Rabibunnisa, H Ramesh Swarna Ramesh, S Thermal Behaviour of Hydro gas Suspension Unit, Fluid Power Technology Proceedings of International Conference EMCHAFT 2005 Nov 2005 India
- Kothandaraman, C P Subramanyan, S Heat and Mass Transfer Data Book Third 1986 95
- Warring R H Seal Friction, Seals and Sealing Handbook 1 2 First 11 19
- Adams Vince Askenazi Abraham Heat Transfer Analysis of solids Finite Element Multidisciplinary analysis Onward Press USA First 1999
- Choi, S B Park D W Lee D Y Optimal control of an electrorheological fluid suspension system for tracked vehicles IMechE 2005 Proceedings of ImechE 219 Journal of automobile Engineering 843 855
- Spencer B F Dyke, S J Sain, M K Carlson, J D Phenomenological model for magneto rheological Dampers Jounrnal of Engineering mechanics March 1997 230 238