Limit analysis based on GM criterion for defect-free pipe elbow under internal pressure

Zhang, Shunhu; Wang, Xiaonan; Song, Binna; Zhao, Dewen

doi:10.1016/j.ijmecsci.2013.10.022

Cited by 15 publications

(1 citation statement)

References 20 publications

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“…Various yield criteria, such as Tresca, von Mises and twin shear stress can be employed. Attempts to include material hardening properties into limit load solutions have also started to appear in the literature [19]. However, the influence of chosen yield criterion is more significant then strain hardening exponent.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Application of failure assessment diagram methods to cracked straight pipes and elbows

Ainsworth

Gintalas

Sahu

et al. 2016

International Journal of Pressure Vessels and Piping

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This paper reports fracture assessments of large-scale straight pipes and elbows of various pipe diameters and crack sizes. The assessments estimate the load for ductile fracture initiation using the failure assessment diagram method. Recent solutions in the literature for stress intensity factor and limit load provide the analysis inputs. An assessment of constraint effects is also performed using recent solutions for elastic T-stress. It is found that predictions of initiation load are close to the experimental values for straight pipes under pure bending. For elbows, there is generally increased conservatism in the sense that the experimental loads are greater than those predicted. The effects of constraint are found not to be a major contributor to the initiation fracture assessments but may have some influence on the ductile crack extension.

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Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%