TY - JOUR
T1 - A full-scale experimental investigation on ride comfort and rolling motion of high-speed train equipped with MR dampers
AU - Ni, Yiqing
AU - Sajjadi Alehashem, Seyed Masoud
AU - Liu, Xiaozhou
N1 - Funding Information:
This work was supported in part by the Research Grants Council of Hong Kong Special Administrative Region (SAR) under Grant R-5020-18, in part by the National Natural Science Foundation of China under Grant U1934209, in part by the Wuyi University's Hong Kong and Macao Joint Research and Development Fund under Grant 2019WGALH15 and Grant 2019WGALH17, and in part by the Innovation and Technology Commission of Hong Kong SAR Government under Grant K-BBY1.
Funding Information:
This work was supported in part by the Research Grants Council of Hong Kong Special Administrative Region (SAR) under Grant R-5020-18, in part by the National Natural Science Foundation of China under Grant U1934209, in part by the Wuyi University’s Hong Kong and Macao Joint Research and Development Fund under Grant 2019WGALH15 and Grant 2019WGALH17, and in part by the Innovation and Technology Commission of Hong Kong SAR Government under Grant K-BBY1.
Publisher Copyright:
© 2013 IEEE.
PY - 2021/8/24
Y1 - 2021/8/24
N2 - Achieving higher operation speeds safely and comfortably is yet a significant challenge in the railway industry. The rail irregularities and wheel-rail interactions in a train running at high speeds may result in large-amplitude vibration in the train's car body and affect passengers by reducing ride comfort. The train suspension systems have a crucial role in reducing the vibration and improving ride comfort to an acceptable level. In this context, an exclusive semi-active magneto-rheological (MR) damper with a favorable dynamic range was designed and fabricated. The MR dampers were installed in a high-speed train's secondary lateral suspension system in replacement of original passive hydraulic dampers, with intent to mitigate vibration of the car body and keep the ride comfort in a proper level at low and high running speeds. A unique full-scale experimental investigation on the high-speed train equipped with MR dampers was carried out to evaluate the MR damper functionality in a real operating situation. The full-scale roller experiments were conducted in a vast range of speeds from 80 to 350 km/hr. At each speed, different currents were applied to the MR dampers. The car body dynamic responses were collected to evaluate the ride quality of the train. Ride comfort indices under various train operating conditions are calculated through Sperling and UIC513 rules. This study reveals that the designed MR dampers effectively reduce the car body's rolling motion. According to Sperling ride comfort index, the car body vibration was 'clearly noticeable' at some running speeds when adopting the MR dampers, but it was not unpleasant. Besides, a 'very good comfort' was achieved according to the UIC513 criterion. Also, no train instability was whatsoever observed at high speeds. This experimental investigation bears out the capability of the devised MR damper to achieve desirable ride comfort under high running speeds.
AB - Achieving higher operation speeds safely and comfortably is yet a significant challenge in the railway industry. The rail irregularities and wheel-rail interactions in a train running at high speeds may result in large-amplitude vibration in the train's car body and affect passengers by reducing ride comfort. The train suspension systems have a crucial role in reducing the vibration and improving ride comfort to an acceptable level. In this context, an exclusive semi-active magneto-rheological (MR) damper with a favorable dynamic range was designed and fabricated. The MR dampers were installed in a high-speed train's secondary lateral suspension system in replacement of original passive hydraulic dampers, with intent to mitigate vibration of the car body and keep the ride comfort in a proper level at low and high running speeds. A unique full-scale experimental investigation on the high-speed train equipped with MR dampers was carried out to evaluate the MR damper functionality in a real operating situation. The full-scale roller experiments were conducted in a vast range of speeds from 80 to 350 km/hr. At each speed, different currents were applied to the MR dampers. The car body dynamic responses were collected to evaluate the ride quality of the train. Ride comfort indices under various train operating conditions are calculated through Sperling and UIC513 rules. This study reveals that the designed MR dampers effectively reduce the car body's rolling motion. According to Sperling ride comfort index, the car body vibration was 'clearly noticeable' at some running speeds when adopting the MR dampers, but it was not unpleasant. Besides, a 'very good comfort' was achieved according to the UIC513 criterion. Also, no train instability was whatsoever observed at high speeds. This experimental investigation bears out the capability of the devised MR damper to achieve desirable ride comfort under high running speeds.
KW - High-speed train
KW - MR~damper
KW - full-scale experiment
KW - ride comfort index
KW - secondary suspension system
UR - http://www.scopus.com/inward/record.url?scp=85113859054&partnerID=8YFLogxK
U2 - 10.1109/ACCESS.2021.3106953
DO - 10.1109/ACCESS.2021.3106953
M3 - Journal article
SN - 2169-3536
VL - 9
SP - 118113
EP - 118123
JO - IEEE Access
JF - IEEE Access
M1 - 9521195
ER -