NDLI: Simplified representation of rigging efficiency in brake force calculation

Content Provider	IEEE Xplore Digital Library
Author	Booth, G. Prabhakaran, A. Punwani, S.K. Stewart, M.
Copyright Year	2006
Description	Author affiliation: Sharma & Associates Inc., IL (Booth, G.; Prabhakaran, A.)
Abstract	A method is presented for predicting brake shoe force of a rail vehicle as a linear function of effective brake cylinder pressure. Historically, the braking force has been calculated as the product of cylinder pressure, cylinder area, rigging leverage ratio, and an overall system efficiency factor. The efficiency factor, which takes into account frictional forces and other losses, is a non-linear function of brake cylinder pressure. The method presented here uses a modified formulation for braking force that does not require a non-linear representation of efficiency. Instead, the braking force is represented as a linear function of effective (or net) cylinder pressure. Effective cylinder pressure is the actual cylinder pressure reduced by the initial cylinder pressure required to set the brake shoes against the wheels with no net force transmitted to the wheels. This method of determining the braking force allows a clearer understanding of the role of rigging efficiency, breaking it into fixed losses (such as return spring force) and purely frictional losses that are directly proportional to load (such as pin friction). This approach for calculating brake shoe force as a function of effective cylinder pressure has several advantages over the conventional method (as described above) using nonlinear rigging efficiency: the mathematical formulation is a more appropriate representation of the pertinent physical aspects of the brake cylinder and rigging; complex curve-fit representations of efficiency for different rigging types are avoided; shoe force as a function of cylinder pressure is characterized (for a given vehicle) by just two parameters, each of which has a clear physical meaning and may be readily determined for any particular car using common brake system measurement techniques. Published discussions of efficiency and its approximation to measured data for various types of car rigging are compared with predictions from the subject method and show close correlation
Sponsorship	Rail Transportation Division, ASME
Starting Page	61
Ending Page	71
File Size	2844181
Page Count	11
File Format	PDF
ISBN	0791842037
DOI	10.1109/RRCON.2006.215294
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-04-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	ASME
Subject Keyword	Footwear Vehicles Rails Force measurement US Department of Transportation Wheels Friction Business continuity Pistons Springs
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Simplified Representation of Rigging Efficiency in Brake Force Calculation

Self powered wireless brake shoe force measurement system for train brakes

Simulation on Pneumatic Brake Control of Train Based on Deceleration Feedback

Full Scale Friction and Durability Testing of Laser Glazed Rail

Electromagnetic brake with controllable torque

Sensor system of detecting defects in wheels of railway vehicles running at operational speed

Lateral stability performance in uni-directional rollingstock

Feedback Control of Pneumatic Brake of Urban Railway Train under ATO Mode

Electronic System of Measuring Locomotive Wheels Load and Defining Operations Necessary to Minimize Existing Differences

Simplified representation of rigging efficiency in brake force calculation

Similar Documents

Simplified Representation of Rigging Efficiency in Brake Force Calculation

Self powered wireless brake shoe force measurement system for train brakes

Simulation on Pneumatic Brake Control of Train Based on Deceleration Feedback

Full Scale Friction and Durability Testing of Laser Glazed Rail

Electromagnetic brake with controllable torque

Sensor system of detecting defects in wheels of railway vehicles running at operational speed

Lateral stability performance in uni-directional rollingstock

Feedback Control of Pneumatic Brake of Urban Railway Train under ATO Mode

Electronic System of Measuring Locomotive Wheels Load and Defining Operations Necessary to Minimize Existing Differences

Simplified representation of rigging efficiency in brake force calculation