Title
The effect of the yield to tensile strength ratio on stress/strain concentrations around holes in high-strength steels
Author
Obers, S.F.P.M.
Overal, J.J.
Wong, W.J.
Walters, C.L.
Publication year
2022
Abstract
Application of high-strength steels in the maritime and offshore industry is currently limited by rules governing the ratio of the yield to tensile strength (the Y/T ratio). To better understand the physical basis for these rules, the nature and extent of the plastic stress/strain field in the vicinity of a stress concentration (a circular hole) in a structure made from high-strength steel are analyzed. This is done through analytical models of the stress field and the extent of plasticity in the vicinity of a hole based on classical methods. These analytical methods are validated through FEA models that are in turn validated by published experimental data. This paper concludes that a high Y/T ratio leads to a lower plastic SCF and a higher local strain in the vicinity of a hole. The extent of the plastic zone is not affected by different values of Y/T ratio for different values of
Subject
SCF
Elasto-plastic
Ultra high-strength steels
Y/T
Maritime & Offshore
Energy
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http://resolver.tudelft.nl/uuid:0c61f152-02df-4be6-aaed-09c07f73e246
TNO identifier
977988
Source
Marine Structures, 84 (84), 1-12
Document type
article