scholarly journals Measurement of the Noise Originating From Class 2 High Speed Rail Vehicles

2019 ◽  
pp. 93-98
Author(s):  
Polak, Krzysztof ◽  
Korzeb, Jarosław
Keyword(s):  
High Speed ◽  
High Speed Rail ◽  
Rail Vehicles

scholarly journals Field Measurements of Vibration on the Car Body-Suspended Equipment for High-Speed Rail Vehicles

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Jinying Guo ◽  
Huailong Shi ◽  
Fansong Li ◽  
Pingbo Wu
Keyword(s):  
High Speed ◽  
Field Measurements ◽  
Railway Vehicle ◽  
Elastic Suspension ◽  
High Speed Rail ◽  
Test Configuration ◽  
Car Body ◽  
Rail Vehicles ◽  
Frequency Domains ◽  
Low Pass

The vibrations in the flexible car bodies of the high-speed electric multiple units (EMUs) and their coupling effects with the bogies and other types of equipment vibrating have lead issues for railway operators and gained interest for researchers. Other than a numerical investigation, field measurements on the vibrating characteristics of the car body (CB) and its suspended equipment (CBSE) for a high-speed railway vehicle were performed to elaborate the vibrating characteristics on the CB and its CBSE. In this long-term tracking test, the running stability of vehicle and wheel-rail interaction were also examined with the increase of operation distance (OD), a total of 2,400,000 km. The test configuration and arrangements are introduced first, followed by the data analysis in time and frequency domains. It is seen that the wheelset conicity increases 0.008 per 10,000 km, which increases approximately linearly with the OD from 0.10 to 0.40. Two types of wheel treads, S1002CN and LMB10, have different ranges in conicity and reprofiling cycles. The lateral accelerations on CB in a downward-running case (0.5 g) are much greater than that in upward-running case (0.2 g) corresponding to the vehicle stability differences. The 15 Hz low-pass filtered acceleration on CB experiences a maximum of 0.10 g and an averaged amplitude around 0.05 g, whereas the frequency spectrum has peaks of 0.01 g on CB and 0.1 g on CBSE. It states that an elastic suspension between the CBSE and the CB prevents the high-frequency vibration from the CB.

scholarly journals Application of the Flame-Retardant Magnesium Alloy to High Speed Rail Vehicles

Materia Japan ◽  
2013 ◽  
Vol 52 (10) ◽  
pp. 484-490 ◽  
Author(s):  
Hisashi Mori ◽  
Kenji Fujino ◽  
Ken Kurita ◽  
Yasumasa Chino ◽  
Naobumi Saito ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Flame Retardant ◽  
High Speed ◽  
High Speed Rail ◽  
Rail Vehicles

Stability of Elasto-Damper–Coupled Wheelset for High-Speed Rail Vehicles

1996 ◽  
Vol 1531 (1) ◽  
pp. 20-26
Author(s):  
Junghsen Lieh ◽  
Jie Yin
Keyword(s):  
High Speed ◽  
Critical Speed ◽  
Vehicle Stability ◽  
Optimal Parameters ◽  
High Speed Rail ◽  
Stability Boundaries ◽  
Vehicle Performance ◽  
Suspension Parameters ◽  
Rail Vehicles ◽  
Stiffness And Damping

A symmetric wheelset with an elasto-damper coupling between the wheels is used to investigate the effect of coupling and primary stiffness and damping on the vehicle critical speed. Different suspension parameters are considered. Stability boundaries for various conditions are presented. The dynamic model of the elasto-damper–coupled wheelset is validated using published results. Both coupler and primary suspensions can dramatically affect the vehicle stability, and optimal parameters can be used to improve the vehicle performance over that of the conventional system.

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