Proceedings of the 2000 ASME/IEEE Joint Railroad Conference (Cat. No.00CH37110)最新文献

Effect of self-steering locomotive trucks in improving adhesion on curved tracks 自转向机车车辆改善弯曲轨道附着力的效果

Proceedings of the 2000 ASME/IEEE Joint Railroad Conference (Cat. No.00CH37110) Pub Date : 2000-04-06 DOI: 10.1109/RRCON.2000.869987

M. Ahmadian, Wei Huang

{"title":"Effect of self-steering locomotive trucks in improving adhesion on curved tracks","authors":"M. Ahmadian, Wei Huang","doi":"10.1109/RRCON.2000.869987","DOIUrl":"https://doi.org/10.1109/RRCON.2000.869987","url":null,"abstract":"The primary purpose of this study is to provide a qualitative analysis of the effects of the self-steering trucks that are commonly used by the US Railroads-namely, EMD's radial truck and GE's steerable truck-on increasing adhesion in curves. Although there exists a number of anecdotal statements about the ability of steerable trucks in general, and self-steering trucks in particular, in increasing adhesion on curves, to the best of the authors' knowledge, there exists no study that provides a qualitative or quantitative analysis of this aspect of steerable trucks. Two aspects of locomotive trucks are essential for their ability to deliver high adhesion in curves. First, the ability to allow the axles to yaw sufficiently relative to the truck frames, such that they can hold a small angle of attack with the rail. Second, providing sufficiently large longitudinal stiffness between the axles and the truck frame, to accommodate the high adhesions. An equivalent stiffness analysis is used to show that the two steerable trucks that are considered for this study are far superior to the conventional, three-axle, straight trucks in providing both a smaller angle of attack and a higher longitudinal stiffness for better adhesion characteristics. The qualitative analysis of this study agrees with the experience of the US Railroads with the adhesion performance of their self-steering trucks. Although not aware of any adhesion data published in the open literature, the authors are familiar with several attempts by the original equipment manufacturers and railroads to collect adhesion data for self-steering trucks. Similar to the findings of this study, the results of such experiments have often indicated the ability to deliver higher adhesion by self-steering trucks as compared to straight trucks. Further, the railroads have experienced that in their operation they can get higher adhesion in curves from steerable trucks than conventional straight trucks.","PeriodicalId":261468,"journal":{"name":"Proceedings of the 2000 ASME/IEEE Joint Railroad Conference (Cat. No.00CH37110)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126630887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A technology alternative to the VAL system on the O'Hare airport transit system (OATS) (or: converting OATS to CORN) 奥黑尔机场运输系统(OATS)上VAL系统的替代技术(或:将OATS转换为CORN)

Proceedings of the 2000 ASME/IEEE Joint Railroad Conference (Cat. No.00CH37110) Pub Date : 2000-04-06 DOI: 10.1109/RRCON.2000.870001

D. Gary, A. Peterson

引用次数: 0

Recent improvements in wrought railroad wheel production at Standard Steel 标准钢铁公司铁路锻造车轮生产的最新改进

Proceedings of the 2000 ASME/IEEE Joint Railroad Conference (Cat. No.00CH37110) Pub Date : 2000-04-06 DOI: 10.1109/RRCON.2000.869988

C. Lonsdale, R.D. Swarzell

引用次数: 2

A curving simulation for a monorail car 单轨车的弯曲仿真

Proceedings of the 2000 ASME/IEEE Joint Railroad Conference (Cat. No.00CH37110) Pub Date : 2000-04-06 DOI: 10.1109/RRCON.2000.869998

K. Goda, T. Nishigaito, M. Hiraishi, K. Iwasaki

引用次数: 21

Influence of periodic irregularities on wheel climb derailment safety of a freight car running on a transition curve 周期性不规则度对转弯处货车车轮爬升脱轨安全性的影响

Proceedings of the 2000 ASME/IEEE Joint Railroad Conference (Cat. No.00CH37110) Pub Date : 2000-04-06 DOI: 10.1109/RRCON.2000.869985

Chen Guangxiong, Jin Xincan, Bao Weiqian

引用次数: 3

NYCT's communications based train control standard: a look at the leader's system NYCT基于通信的列车控制标准:领导者系统

Proceedings of the 2000 ASME/IEEE Joint Railroad Conference (Cat. No.00CH37110) Pub Date : 2000-04-04 DOI: 10.1109/RRCON.2000.869994

G. Hubbs, E.A. Mortlock

引用次数: 1

A new public address system for a renovated Grand Central Terminal 为翻新的中央车站设计的新公共广播系统

Proceedings of the 2000 ASME/IEEE Joint Railroad Conference (Cat. No.00CH37110) Pub Date : 2000-04-04 DOI: 10.1109/RRCON.2000.869999

M. Savchak, M. Grossman, R. E. Woods, W. Burdick, R. S. Lee

引用次数: 0

A step forward or backward? Sound Transit opts for 1500 VDC traction electrification 前进还是后退?1500 VDC牵引电气化的良好交通选择

Proceedings of the 2000 ASME/IEEE Joint Railroad Conference (Cat. No.00CH37110) Pub Date : 2000-04-04 DOI: 10.1109/RRCON.2000.869989

K. Pham, R. Eacker, M. Burnett, M. Bardslkey

{"title":"A step forward or backward? Sound Transit opts for 1500 VDC traction electrification","authors":"K. Pham, R. Eacker, M. Burnett, M. Bardslkey","doi":"10.1109/RRCON.2000.869989","DOIUrl":"https://doi.org/10.1109/RRCON.2000.869989","url":null,"abstract":"The Central Puget Sound Regional Transit Authority (or Sound Transit) faces some interesting tradeoffs for their new light rail system in Seattle. The number of cars per train and train frequency are high enough to suggest a heavy rail system to meet predicted ridership. Since one-third of the 21-mile route is surface-running on city streets, third rail was eliminated as a possible power collection method. Heavy traction loads and close spacing of the four-car trains would result in excessive voltage drop in the overhead contact conductors and running rails with a conventional 750 VDC system, as verified by the system simulations. The design team also had a mandate to reduce the number of substations to minimize capital and maintenance costs. The agency and its systems engineering consultant found that 750 VDC traction electrification was not an economically practical solution. The project team considered a number of alternatives. Thyristor-controlled rectifier substations made it possible to stretch substation spacing but this provided only, a 10% reduction in the total number of substations and posed other challenges. Battery-energy storage or flywheel-energy storage violated another agency mandate-that of staying with proven technology. 1500 VDC traction electrification met all requirements and is widely accepted worldwide, but is rare in the United States. Only two operating US transit properties use 1500 VDC for street running transit, and those systems, both in the Chicago area, date back to the turn of the last century. After conducting a study that included feedback from traction electrification equipment suppliers, vehicle and propulsion system manufacturers and other agencies, Sound Transit has made a choice to develop a 1500 VDC system. This paper summarizes the process that the design team went through in making this decision. System sectionalizing, fault detection, voltage regulation, overhead contact system (OCS) clearances, hardware availability and other issues are discussed.","PeriodicalId":261468,"journal":{"name":"Proceedings of the 2000 ASME/IEEE Joint Railroad Conference (Cat. No.00CH37110)","volume":"88 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126830284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Vertical dynamic response of railroad track induced by high speed trains 高速列车引起的铁路轨道垂直动力响应

Proceedings of the 2000 ASME/IEEE Joint Railroad Conference (Cat. No.00CH37110) Pub Date : 2000-04-04 DOI: 10.1109/RRCON.2000.869995

G. Can, R. Greif

引用次数: 5

A modulized train performance simulator for rapid transit DC analysis 用于快速交通直流分析的模块化列车性能模拟器

Proceedings of the 2000 ASME/IEEE Joint Railroad Conference (Cat. No.00CH37110) Pub Date : 2000-04-04 DOI: 10.1109/RRCON.2000.870002

Bih‐Yuan Ku, J. Jang, S. Ho

引用次数: 13