prEN 17149-3

Railway applications - Strength assessment of rail vehicle structures - Part 3: Fatigue strength assessment based on cumulative damage

This document describes a procedure for fatigue strength assessment based on cumulative damage of rail vehicle structures that are manufactured, operated and maintained in accordance with standards valid for rail system applications.
This document is applicable for variable amplitude load data with total number of cycles higher than 10 000 cycles.
An endurance limit approach is outside the scope of this document.
The assessment procedure is restricted to ferrous materials and aluminium.
This document does not define design load cases.
This document is not applicable for corrosive conditions or elevated temperature operation in the creep range.
This document is applicable to all kinds of rail vehicles; however it does not define in which cases a fatigue strength assessment using cumulative damage is to be applied.

Bahnanwendungen - Festigkeitsnachweis von Schienenfahrzeugstrukturen - Teil 3: Betriebsfestigkeitsnachweis

Applications ferroviaires - Évaluation de la résistance des structures de véhicule ferroviaire - Partie 3 : Évaluation de la résistance à la fatigue basée sur la méthode des dommages cumulés

Železniške naprave - Ocenjevanje odpornosti konstrukcije železniških vozil - 3. del: Ocena odpornosti proti utrujenosti na podlagi kumulativne škode

General Information

• Status: Not Published
• Publication Date: 13-Nov-2024
• ICS: 45.060.01 - Railway rolling stock in general
• Technical Committee: CEN/TC 256 - Railway applications
• Drafting Committee: CEN/TC 256/WG 2 - Structural requirements
• Current Stage: 4599 - Dispatch of FV draft to CMC - Finalization for Vote
• Start Date: 11-Mar-2024
• Due Date: 31-Jan-2024
• Completion Date: 11-Mar-2024
• Ref Project: oSIST prEN 17149-3:2023 - Railway applications - Strength assessment of rail vehicle structures - Part 3: Fatigue strength assessment based on cumulative damage

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 17149-3:2023
01-maj-2023
Železniške naprave - Ocenjevanje odpornosti konstrukcije železniških vozil - 3.
del: Ocena odpornosti proti utrujenosti na podlagi kumulativne škode
Railway applications - Strength assessment of rail vehicle structures - Part 3: Fatigue
strength assessment based on cumulative damage
Bahnanwendungen - Festigkeitsnachweis von Schienenfahrzeugstrukturen - Teil 3:
Betriebsfestigkeitsnachweis
Applications ferroviaires - Évaluation de la résistance des structures de véhicule
ferroviaire - Partie 3 : Évaluation de la résistance à la fatigue basée sur la méthode des
dommages cumulés
Ta slovenski standard je istoveten z: prEN 17149-3
ICS:
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
oSIST prEN 17149-3:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 17149-3:2023
prEN 17149-3:2023 (E)
Contents Page

European foreword . 6
Introduction . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 Stress determination . 9
4.1 General. 9
4.2 Parent material . 9
4.3 Welded joints . 9
4.3.1 Modified nominal stresses . 9
4.3.2 Structural stresses and notch stresses . 9
5 Fatigue strength . 9
5.1 Parent material . 9
5.1.1 General. 9
5.1.2 Component fatigue strength Δσ and Δτ . 10
R R
5.1.3 Material properties . 10
5.1.4 Design Parameters . 11
5.1.5 Fatigue strength factors for direct stresses f and for shear stresses f . 13
R,σ R,τ
5.1.6 Correction factor for casting fR,C . 14
5.1.7 S-N curves and methods of cumulative damage rule . 15
5.2 Welded joints . 16
5.2.1 General. 16
5.2.2 Fatigue classes Δσ and Δτ . 16
C C
5.2.3 Component fatigue strength Δσ and Δτ . 17
R R
5.2.4 Influence of thickness f and bending . 17
thick
5.2.5 Residual stress factors f and f . 18
res,σ res,τ
5.2.6 Enhancement factor for post-weld improvemen
...