Foreword
Introduction
1 Scope
2 Normative references
3 Parameters for the definition of the application covered
3.1 Parameters for geometrical interchangeability
3.1.1 Functional requirements
3.1.2 Assembly requirements
3.1.3 Maintenance requirements
3.2 Parameters for thermomechanical assessment
3.3 Parameters for mechanical assessment
3.4 Parameters for acoustic assessment
4 Description of the wheel to be approved
5 Assessment of the geometrical interchangeability
6 Assessment of the thermomechanical behaviour
6.1 General procedure
6.2 First stage - Braking bench test
6.2.1 Test procedure
6.2.2 Decision criteria
6.3 Second stage - Wheel fracture bench test
6.3.1 General
6.3.2 Test procedure
6.3.3 Decision criterion
6.4 Third stage - Field braking test
6.4.1 General
6.4.2 Test procedure
6.4.3 Decision criteria
7 Assessment of the mechanical behaviour
7.1 General procedure
7.2 First stage - Calculation
7.2.1 Applied forces
7.2.2 Calculation procedure
7.2.3 Decision criteria
7.3 Second stage - Bench test
7.3.1 General
7.3.2 Definition of bench loading and of the test procedure
7.3.3 Decision criteria
8 Assessment of the acoustical behaviour
8.1 General procedure
8.2 Calculation procedure
8.3 Field measurements
8.4 Decision criteria
9 Technical approval documents
Annex A (normative) Assessment of the thermomechanical behaviour
A.1 Assessment organigram
A.2 Braking bench test procedure
A.2.1 Principle of the test
A.2.2 Definition of braking
A.2.3 Method of measuring the decision criteria
A.2.4 Tests and measurements
A.2.5 Anomalies
A.3 Wheel fracture bench test procedure
A.3.1 Principle of the test
A.3.2 Definition of drag braking
A.3.3 Pre-cracking of the rim
A.3.4 Special measurement methods required for this test
A.3.5 Tests and measurements
A.3.6 Anomalies
A.4 Field braking test procedure
A.4.1 Principle of the test
A.4.2 Definition of braking
A.4.3 Method of measurement of the decision criteria
A.4.4 Standard test run
A.4.5 Tests and measurements
A.4.6 Anomalies
Annex B (normative) Organigram of the mechanical behaviour
assessment
Annex C (informative) Mechanical behaviour - Finite element code
assessment
Annex D (informative) Mechanical behaviour - Bench loading and test
procedure
D.1 Principle of bench loading and test procedure
D.2 Definition of loading
D.2.1 General
D.2.2 Measurement of the stresses during field tests
D.3 Fatigue bench test
D.3.1 Method 1 - Random fatigue test
D.3.2 Method 2 - Single-stage fatigue test
Annex E (informative) Assessment of the acoustical behaviour
E.1 Assessment organigram
E.2 Calculation procedure
E.2.1 Preliminary comment
E.2.2 Calculation of the wheel modal basis
E.2.3 Selection of the reference track model
E.2.4 Definition of the calculation parameters
E.2.5 Power calculation
E.2.6 Insertion
E.2.7 Calculations of the decision criteria for
acoustical technical approval of the wheel
E.2.8 Optional calculations
E.3 Field measurement procedure
E.3.1 Objective and preliminary remark
E.3.2 Recommendations for the operating conditions
E.3.3 Measurement procedure
E.3.4 Analysis of results
Bibliography