Print Email Facebook Twitter The effect of the yield to tensile strength ratio on stress/strain concentrations around holes in high-strength steels Title The effect of the yield to tensile strength ratio on stress/strain concentrations around holes in high-strength steels Author Obers, Siemen F.P.M. (Student TU Delft; Huisman Equipment BV) Overal, Jaap J. (Huisman Equipment BV) Wong, W.J. (TU Delft Ship Hydromechanics and Structures) Walters, C.L. (TU Delft Ship Hydromechanics and Structures) Date 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 σnom/σy. Subject Elasto-plasticSCFUltra high-strength steelsY/T To reference this document use: http://resolver.tudelft.nl/uuid:d1e1ccd3-0145-4053-bc7c-8ead2cc29b9b DOI https://doi.org/10.1016/j.marstruc.2022.103205 ISSN 0951-8339 Source Marine Structures, 84 Part of collection Institutional Repository Document type journal article Rights © 2022 Siemen F.P.M. Obers, Jaap J. Overal, W.J. Wong, C.L. Walters Files PDF 1_s2.0_S0951833922000442_main.pdf 3.08 MB Close viewer /islandora/object/uuid:d1e1ccd3-0145-4053-bc7c-8ead2cc29b9b/datastream/OBJ/view