TY - JOUR
T1 - Dynamic response of a vehicle with flexible car body moving on a ballasted track
AU - Wang, Yingjie
AU - Dimitrovová, Zuzana
AU - Yau, Jong Dar
N1 - National Natural Science Foundation of China 51403680
UID/EMS/5200 2/2013
2017JB 108
PY - 2018/10/10
Y1 - 2018/10/10
N2 - In this study, the dynamic response of a vehicle with flexible car body moving on a ballasted track is investigated. The vehicle/track interaction model is divided into two sub-systems, namely the vehicle and the ballasted track sub-system. The vehicle sub-system is composed by one flexible car body, two bogies and four wheel sets. The car body is created using flexible multibody dynamics. The ballasted track consists of rail, sleeper, ballast and sub-grade. For its representation the simplified 2D discrete support model (DSM) is used and modelled by finite elements. The connection between the two sub-systems, i.e. between the moving wheels and the track is ensured by a linearized Hertzian spring. The dynamic response of the vehicle/track system is computed by the Newmark-β integration method. The effect of the car body flexibility on the dynamic response of this system is analyzed and evaluated based on the maximum car center acceleration. It is concluded that the increase in flexural stiffness of the car body can lead to a notable decrease of its maximum acceleration.
AB - In this study, the dynamic response of a vehicle with flexible car body moving on a ballasted track is investigated. The vehicle/track interaction model is divided into two sub-systems, namely the vehicle and the ballasted track sub-system. The vehicle sub-system is composed by one flexible car body, two bogies and four wheel sets. The car body is created using flexible multibody dynamics. The ballasted track consists of rail, sleeper, ballast and sub-grade. For its representation the simplified 2D discrete support model (DSM) is used and modelled by finite elements. The connection between the two sub-systems, i.e. between the moving wheels and the track is ensured by a linearized Hertzian spring. The dynamic response of the vehicle/track system is computed by the Newmark-β integration method. The effect of the car body flexibility on the dynamic response of this system is analyzed and evaluated based on the maximum car center acceleration. It is concluded that the increase in flexural stiffness of the car body can lead to a notable decrease of its maximum acceleration.
KW - Dynamic response
KW - Machinery
KW - Railroad cars
UR - http://www.scopus.com/inward/record.url?scp=85055523333&partnerID=8YFLogxK
U2 - 10.1051/matecconf/201821111003
DO - 10.1051/matecconf/201821111003
M3 - Conference article
AN - SCOPUS:85055523333
SN - 2101-6275
VL - 211
JO - MATEC Web of Conferences
JF - MATEC Web of Conferences
M1 - 11003
T2 - 14th International Conference on Vibration Engineering and Technology of Machinery, VETOMAC 2018
Y2 - 10 September 2018 through 13 September 2018
ER -