1. Material fatigue

Depending on the nature of the operating conditions, fatigue cracks can be classified into two mechanisms: Thermo-Mechanical Fatigue and High Cycle Fatigue. Wöhler curves or S-N curves (Stress – Number of cycles) are used to design parts for fatigue loading. These curves are defined for each type of material.

For example, a cylindrical specimen of a given material is rotated around its axis of revolution...

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Material fatigue

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page Fatigue design by simulation - Application example

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Bibliography

(1) - WÖHLER (A.) - Versuche zur Ermittlung der auf die Eisenbahnwagenachsen einwirkenden Kräfte und die Widerstandsfähigkeit der Wagen-Achsen. - Zeitschrift für Bauwesen, X, p. 583-616 (1860).
(2) - NICHOLAS (T.) - High cycle fatigue – A mechanics of materials...

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