Fatigue of Clip Connectors for Offshore Drilling Risers under the Combined Influence of High Mean Stress and Biaxial Tension

Abstract : Push-pull fatigue tests at various R ratios (σmin/σmax), as well as combined cyclic tension and internal pressure tests with various proportions of each loading were run on a 2.5%Cr-1%Mo steel to investigate separately the effects of a mean stress and of positive stress biaxiality. Fatigue lives were found to decrease with increasing mean stress at fixed biaxiality and a non-linear effect of stress biaxiality on fatigue lives was observed at a fixed R ratio. The damage mechanisms were found to change with both parameters and these modifications were analyzed. Many popular multiaxial fatigue criteria were unable to describe all the data. Thus, a new fatigue criterion based on Gerber’s parabola, has been proposed that captures the evolution of the endurance limit under the combined effect of mean stress and biaxial tension.
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-01821896
Contributor : Véronique Doquet <>
Submitted on : Saturday, June 23, 2018 - 9:09:46 AM
Last modification on : Wednesday, March 27, 2019 - 4:16:24 PM

Links full text

Identifiers

Citation

Vidit Gaur, Véronique Doquet, Emmanuel Persent, Eléonore Roguet. Fatigue of Clip Connectors for Offshore Drilling Risers under the Combined Influence of High Mean Stress and Biaxial Tension. Procedia Engineering, Elsevier, 2015, 133, pp.90 - 101. ⟨10.1016/j.proeng.2015.12.631⟩. ⟨hal-01821896⟩

Share

Metrics

Record views

120