ISO 20138-2:2019 - Railway applications. Calculation of braking performance (stopping, slowing and stationary braking). General algorithms utilizing step by step calculation

ISO 20138-2:2019

Railway applications. Calculation of braking performance (stopping, slowing and stationary braking). General algorithms utilizing step by step calculation

Status : Current, Under review   Published : November 2019

Format
PDF

Format
HARDCOPY



This document specifies the methodologies for calculation of braking performance for railway rolling stock.

This document describes the general algorithms/formulae using instantaneous value inputs to perform calculations of brake equipment and braking performance, in terms of stopping/slowing distances, braking power and energy for all types of rolling stock, either as vehicles or units.

The calculations can be performed at any stage of the assessment process (design, manufacture, testing, verification, investigation, etc.) of railway rolling stock. This document does not set out specific acceptance criteria (pass/fail).

This document is not intended to be used as a design guide for the selection of brake systems and does not specify performance requirements. This document does not provide a method to calculate the extension of stopping distances when the level of demanded adhesion exceeds the available adhesion (wheel slide activity).

This document contains examples of the calculation of brake forces for different brake equipment types and examples of the calculation of stopping distance for vehicles or units.




Standard NumberISO 20138-2:2019
TitleRailway applications. Calculation of braking performance (stopping, slowing and stationary braking). General algorithms utilizing step by step calculation
StatusCurrent, Under review
Publication Date15 November 2019
Normative References(Required to achieve compliance to this standard)ISO 20138-1:2018
Informative References(Provided for Information)EN 16185, EN 15734-2, EN 14478, EN 15734-1, EN 13452-1, EN 13452-2, EN 15663, EN 14067-1, ISO/TR 22131
Draft Superseded ByISO/DIS 20138-2
DescriptorsStopping, Calculations (mathematics), Algorithms, Trains, Mechanical testing, Control of specific variables, Braking tests, Dynamic testing, Brakes, Testing
ICS45.020
Title in FrenchApplications ferroviaires -- Calcul des performances de freinage (freinage d'arrêt, de ralentissement et d'immobilisation) Partie 2: Algorithmes généraux utilisant le calcul pas à pas
CommitteeRAE/4/-/1
PublisherISO
FormatA4
DeliveryYes
Pages40
File Size2.965 MB
Price£111.00


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