Numerical study on the influence of suspended equipments on the ride comfort in high speed railway vehicles

To study how the suspended equipments impact the carbody flexible vibrations in railway vehicle and the ride comfort, a rigid flexible general model is required. The numerical simulations rely on three models, derived from the general model - a reference model with no equipment, a simplified model with one equipment mounted at the carbody centre and another model considering four equipments mounted along the carbody. The intent of this paper arises from the observation that the literature review does not feature any study to highlight the change in the ride comfort, exclusively due to the equipments. Similarly, there is no mention on contrasting the ride comfort results obtained from the simplified model versus the ones coming from the model with more equipments. The main characteristics of the flexible vibrations behaviour in the carbody due to the suspended equipments are made visible by comparing the frequency response functions of the carbody between the no equipment and the one equipment models. The influence of the suspended equipments on the ride comfort is established by a contrastive examination of the ride comfort index calculated in the carbody fitted with one/four equipment/s models with the ride comfort index from the no equipment model.

[1]  Tadao Takigami,et al.  Reduction of Carbody Flexural Vibration by the High-damping Elastic Support of Under-floor Equipment , 2015 .

[2]  Huailong Shi,et al.  Flexible vibration analysis for car body of high-speed EMU , 2016 .

[3]  Roger M. Goodall,et al.  Influences of car body vertical flexibility on ride quality of passenger railway vehicles , 2009 .

[4]  Jing Zeng,et al.  Application of DVA theory in vibration reduction of carbody with suspended equipment for high-speed EMU , 2014 .

[5]  Dao Gong,et al.  Analysis of modal frequency optimization of railway vehicle car body , 2016 .

[6]  Jing Zeng,et al.  Influence of equipment excitation on flexible carbody vibration of EMU , 2014 .

[7]  Gong Dao.  Analysis on Geometric Filtering Phenomenon and Flexible Car Body Resonant Vibration of Railway Vehicles , 2009 .

[8]  Andrea Collina,et al.  The Development of a Numerical Model for Railway Vehicles Comfort Assessment Through Comparison With Experimental Measurements , 2002 .

[9]  Jinsong Zhou,et al.  On the resonant vibration of a flexible railway car body and its suppression with a dynamic vibration absorber , 2013 .

[10]  Dao Gong,et al.  Study on Geometry Filtering Phenomenon and Flexible Car Body Resonant Vibration of Articulated Trains , 2013 .

[11]  Jing Zeng,et al.  Study on Carbody Flexible Vibration Considering Layout of underneath Equipment and Doors , 2016 .

[12]  Shan Yong-lin,et al.  Influence of equipment under car on carbody vibration , 2012 .

[13]  Caihong Huang,et al.  Numerical and experimental studies on the car body flexible vibration reduction due to the effect of car body-mounted equipment , 2018 .

[14]  Tadao Takigami,et al.  Numerical analysis of three-dimensional flexural vibration of railway vehicle car body , 2006 .

[15]  Shoune Xiao,et al.  Effect of train carbody’s parameters on vertical bending stiffness performance , 2016 .

[16]  Dao Gong,et al.  Influences of Suspended Equipment under Car Body on High-speed Train Ride Quality , 2011 .

[17]  Jing Zeng,et al.  Identifying the relationship between suspension parameters of underframe equipment and carbody modal frequency , 2014 .

[18]  Huailong Shi,et al.  Suspension Parameters Designing of Equipment for Electric Multiple Units Based on Dynamic Vibration Absorber Theory , 2014 .

[19]  Nie Yizhao,et al.  Research on resonance vibration simulation method of high-speed railway vehicle carbody , 2015 .