Improvement of Passengers Ride Comfort in Rail Vehicles Equipped with Air Springs
In rail vehicles, air springs are very important isolating component, which guarantee good ride comfort for passengers during their trip. In the most new rail–vehicle models, developed by researchers, the thermo–dynamical effects of air springs are ignored and secondary suspension is modeled by simple springs and dampers. As the performance of suspension components have significant effects on rail–vehicle dynamics and ride comfort of passengers, a complete nonlinear thermo–dynamical air spring model, which is a combination of two different models, is introduced. Result from field test shows remarkable agreement between proposed model and experimental data. Effects of air suspension parameters on the system performances are investigated here and then these parameters are tuned to minimize Sperling ride comfort index during the trip. Results showed that by modification of air suspension parameters, passengers comfort is improved and ride comfort index is reduced about 10%.
[1] Sun Y.Q., Dhanasekar M. (2002), "A dynamic model for the vertical
interaction of the rail track and wagon system", International Journal of
Solids and Structures; 39: 1337-1359.
[2] Hou K., Kalousek J., Dong R. (2003), "A dynamic model for an
asymmetrical vehicle/track system", Journal of Sound and Vibration;
267: 591-604.
[3] Tanabe M., et al. (2003), "Computational model of a Shinkansen train
running on the railway structure and the industrial applications", Journal
of Materials Processing Technology; 140: 705-710.
[4] Durali M., Bahabadi M.M.J. (2004), "Investigation of train dynamics in
passing through curves using a full model", Rail Conference,
Proceedings of the ASME/IEEE Joint: 83 - 88.
[5] Li P., Goodall R., et al. (2007), "Estimation of railway vehicle
suspension parameters for condition monitoring", Journal article,
Control Engineering Practice; 15: 43-55.
[6] Zhang N., Xia H., et al (2008), "Vehicle-bridge interaction analysis
under high-speed trains", Journal of Sound and Vibration; 309: 407-425.
[7] Banerjee N., et al (2008), "Bond graph modeling of a railway truck on
curved track", Journal article, Simulation Modeling Practice and Theory,
Available online.
[8] Boast D., Fellows S., Hale M. (2002), "Effects of temperature, frequency
and amplitude on the dynamic properties of elastomers", conference
paper, AVON Automotive; 03.
[9] Haupt P., Sedlan K. (2001), "Viscoplasticity of elastomeric materials:
experimental facts and constitutive modeling", Journal article, Archive
of Applied Mechanics; 71: 89-109.
[10] Berg M. (1998), "A non-linear rubber spring model for rail vehicle
dynamics analysis", Journal of Vehicle system dynamics; 30: 197-212.
[11] Turner D. M. (1988), "A triboelastic model for the mechanical behaviour
of rubber", Journal of Plastics and rubber processing and applications; 9:
197-201.
[12] Coveney V. A., Johnson D. E., Turner D. M. (1995), "A triboelastic
model for the cyclic mechanical behaviour of filled vulcanizates",
Journal of Rubber Chemistry and technology; 68: 660-670.
[13] Coveney V. A., Johnson D. E. (2000), "Rate-dependent modelling of a
highly filled vucanizate", Journal of Rubber Chemistry and technology;
73(4): 565-577.
[14] Bergstrom J. S., Boyce M. C. (2000), "Large strain time-dependent
behavior of filled elastomers", Journal of Mechanics of materials; 32:
627-644.
[15] Miehe C., Keck J. (2000), "Superimposed finite elastic-viscoelasticplastoelastic
stress response with damage in filled rubbery polymers
Experiments, modelling and algorithmic implementation", Journal of
Mechanics and physics of solids; 48: 323-365.
[16] Lion A. (1996), "A constitutive model for carbon black filled rubber:
Experimental investigation and mathematical representation", Journal of
Continuum Mechanics and Thermodynamics; 8: 153-169.
[17] Berg M. (1999), "A three-dimensional airspring model with friction and
orifice damping", Journal of Vehicle System Dynamics; 33: 528-539.
[18] Presthus M. (2002), "Derivation of Air Spring Model Parameters for
Train Simulation", Master dissertation, Department of applied physics
and mechanical engineering, Division of fluid mechanics, LULEA
University.
[19] Docquier N., Fisette P., Jeanmart H. (2007), "Multiphysic modelling of
railway vehicles equipped with pneumatic suspensions", Journal of
Vehicle System Dynamics; 45(6): 505-524.
[20] Sayyaadi H., Shokouhi N. (2009), "A New Model in Rail-Vehicles
Dynamics Considering Nonlinear Suspension Components Behavior",
Elsevier, International Journal of Mechanical Sciences; 51; 222-232.
[21] Dukkipati R. V., Harg V. K., (1984), "Dynamics of railway vehicle
systems", Academic press, Harcourt Brace Jovanovich, Publishers.
[1] Sun Y.Q., Dhanasekar M. (2002), "A dynamic model for the vertical
interaction of the rail track and wagon system", International Journal of
Solids and Structures; 39: 1337-1359.
[2] Hou K., Kalousek J., Dong R. (2003), "A dynamic model for an
asymmetrical vehicle/track system", Journal of Sound and Vibration;
267: 591-604.
[3] Tanabe M., et al. (2003), "Computational model of a Shinkansen train
running on the railway structure and the industrial applications", Journal
of Materials Processing Technology; 140: 705-710.
[4] Durali M., Bahabadi M.M.J. (2004), "Investigation of train dynamics in
passing through curves using a full model", Rail Conference,
Proceedings of the ASME/IEEE Joint: 83 - 88.
[5] Li P., Goodall R., et al. (2007), "Estimation of railway vehicle
suspension parameters for condition monitoring", Journal article,
Control Engineering Practice; 15: 43-55.
[6] Zhang N., Xia H., et al (2008), "Vehicle-bridge interaction analysis
under high-speed trains", Journal of Sound and Vibration; 309: 407-425.
[7] Banerjee N., et al (2008), "Bond graph modeling of a railway truck on
curved track", Journal article, Simulation Modeling Practice and Theory,
Available online.
[8] Boast D., Fellows S., Hale M. (2002), "Effects of temperature, frequency
and amplitude on the dynamic properties of elastomers", conference
paper, AVON Automotive; 03.
[9] Haupt P., Sedlan K. (2001), "Viscoplasticity of elastomeric materials:
experimental facts and constitutive modeling", Journal article, Archive
of Applied Mechanics; 71: 89-109.
[10] Berg M. (1998), "A non-linear rubber spring model for rail vehicle
dynamics analysis", Journal of Vehicle system dynamics; 30: 197-212.
[11] Turner D. M. (1988), "A triboelastic model for the mechanical behaviour
of rubber", Journal of Plastics and rubber processing and applications; 9:
197-201.
[12] Coveney V. A., Johnson D. E., Turner D. M. (1995), "A triboelastic
model for the cyclic mechanical behaviour of filled vulcanizates",
Journal of Rubber Chemistry and technology; 68: 660-670.
[13] Coveney V. A., Johnson D. E. (2000), "Rate-dependent modelling of a
highly filled vucanizate", Journal of Rubber Chemistry and technology;
73(4): 565-577.
[14] Bergstrom J. S., Boyce M. C. (2000), "Large strain time-dependent
behavior of filled elastomers", Journal of Mechanics of materials; 32:
627-644.
[15] Miehe C., Keck J. (2000), "Superimposed finite elastic-viscoelasticplastoelastic
stress response with damage in filled rubbery polymers
Experiments, modelling and algorithmic implementation", Journal of
Mechanics and physics of solids; 48: 323-365.
[16] Lion A. (1996), "A constitutive model for carbon black filled rubber:
Experimental investigation and mathematical representation", Journal of
Continuum Mechanics and Thermodynamics; 8: 153-169.
[17] Berg M. (1999), "A three-dimensional airspring model with friction and
orifice damping", Journal of Vehicle System Dynamics; 33: 528-539.
[18] Presthus M. (2002), "Derivation of Air Spring Model Parameters for
Train Simulation", Master dissertation, Department of applied physics
and mechanical engineering, Division of fluid mechanics, LULEA
University.
[19] Docquier N., Fisette P., Jeanmart H. (2007), "Multiphysic modelling of
railway vehicles equipped with pneumatic suspensions", Journal of
Vehicle System Dynamics; 45(6): 505-524.
[20] Sayyaadi H., Shokouhi N. (2009), "A New Model in Rail-Vehicles
Dynamics Considering Nonlinear Suspension Components Behavior",
Elsevier, International Journal of Mechanical Sciences; 51; 222-232.
[21] Dukkipati R. V., Harg V. K., (1984), "Dynamics of railway vehicle
systems", Academic press, Harcourt Brace Jovanovich, Publishers.
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:57779", author = "H. Sayyaadi and N. Shokouhi", title = "Improvement of Passengers Ride Comfort in Rail Vehicles Equipped with Air Springs", abstract = "In rail vehicles, air springs are very important isolating component, which guarantee good ride comfort for passengers during their trip. In the most new rail–vehicle models, developed by researchers, the thermo–dynamical effects of air springs are ignored and secondary suspension is modeled by simple springs and dampers. As the performance of suspension components have significant effects on rail–vehicle dynamics and ride comfort of passengers, a complete nonlinear thermo–dynamical air spring model, which is a combination of two different models, is introduced. Result from field test shows remarkable agreement between proposed model and experimental data. Effects of air suspension parameters on the system performances are investigated here and then these parameters are tuned to minimize Sperling ride comfort index during the trip. Results showed that by modification of air suspension parameters, passengers comfort is improved and ride comfort index is reduced about 10%.
", keywords = "Air spring, Ride comfort improvement, Thermo–
dynamical effects.", volume = "3", number = "5", pages = "532-7", }
