EN 14531-6:2009

Foreword
Introduction
1 Scope
2 Normative references
3 Definitions, symbols and abbreviations
   3.1 Terms and definitions
   3.2 Symbols and indices
4 General algorithms
   4.1 General algorithm to calculate stopping and slowing
        distances
   4.2 General algorithm to calculate immobilization brake
5 Stopping and slowing distances calculation
   5.1 Accuracy of input values
   5.2 General characteristics
   5.3 Brake equipment characteristics
   5.4 Initial and operating characteristics
   5.5 Sharing, proportioning of the brake forces - achieved
        forces
   5.6 Braking force per axle
   5.7 Total force on train level
   5.8 Time step integration loop
   5.9 Other decelerations
   5.10 Time
   5.11 Distance calculations
   5.12 Other calculations
6 Immobilization brake calculation
   6.1 General
   6.2 General characteristics
   6.3 Characteristics of the immobilization brake equipment
   6.4 Train and operating characteristics
   6.5 Immobilization force provided by each equipment type
   6.6 Immobilization force
   6.7 External forces
   6.8 Final results
Annex A (normative) - Workflow of kinetic and static
        calculations
Annex B (informative) - Example of time step integration
        loop
Annex C (informative) - Example of distance and other
        dynamic calculations
  C.1 Input data
       C.1.1 Mass data
       C.1.2 Wheel data
       C.1.3 Train resistance
       C.1.4 Data for brake equipment types
       C.1.5 Characteristics and settings of the brake
              equipment
       C.1.6 Initial and final speed
       C.1.7 Gradient
  C.2 Calculation results
       C.2.1 Braking force of single equipments and train
              resistance
       C.2.2 Total braking force per equipment type and
              train resistance
       C.2.3 Distances
       C.2.4 Stopping time
       C.2.5 Equivalent response time
       C.2.6 Equivalent deceleration
       C.2.7 Decelerations
       C.2.8 Required adhesion
Annex D (informative) - Example of immobilisation calculations
  D.1 Input data
       D.1.1 Mass data
       D.1.2 Wheel data
       D.1.3 Train resistance
       D.1.4 Wind force on the train
       D.1.5 Data for axle related disc brake equipment
       D.1.6 Gradient
       D.1.7 Available adhesion
       D.1.8 Brake equipment in use
  D.2 Calculation results of the immobilisation calculation
       D.2.1 Immobilisation force
       D.2.2 Immobilisation safety factor
       D.2.3 Required adhesion per axle
       D.2.4 Maximum achievable gradient
Annex ZA (informative) Relationship between this European
         Standard and the Essential Requirements of EC
         Directive 2008/27/EC
Bibliography

This European Standard describes a general algorithm that may be used in all types of high speedand conventional vehicle applications, including self-propelling thermal or electric trains, thermal orelectric traction units; passenger carriages, mobile railway infrastructure construction andmaintenance equipment and freight wagons. This standard does not specify the performancerequirements. It enables the calculation of the various aspects of the performance: stopping orslowing distances, dissipated energy, force calculations and immobilization braking.This standard enables the verification by calculation of the stopping, slowing and immobilizationperformance requirements for high speed and conventional trains operating on high speed andconventional infrastructure.This standard presents:a) example of distance and other dynamic calculations, see Annex C;b) example of immobilisation calculations, see Annex D.