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The effect of the yield to tensile strength ratio on stress/strain concentrations around holes in high-strength steels
https://orcid.org/0000-0002-9165-3757
https://orcid.org/0000-0002-2818-9533
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 .
Highlights An analytical relation between Y/T and the elasto-plastic stress field is developed. Increasing Y/T decreases the plastic SCF and increases the local peak strain. Varying Y/T has no discernible effect on the plastic zone’s extent for 0.87 < Y/T < 1.
The effect of the yield to tensile strength ratio on stress/strain concentrations around holes in high-strength steels
https://orcid.org/0000-0002-9165-3757
https://orcid.org/0000-0002-2818-9533
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 .
Highlights An analytical relation between Y/T and the elasto-plastic stress field is developed. Increasing Y/T decreases the plastic SCF and increases the local peak strain. Varying Y/T has no discernible effect on the plastic zone’s extent for 0.87 < Y/T < 1.
The effect of the yield to tensile strength ratio on stress/strain concentrations around holes in high-strength steels
https://orcid.org/0000-0002-9165-3757
https://orcid.org/0000-0002-2818-9533
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 .
Highlights An analytical relation between Y/T and the elasto-plastic stress field is developed. Increasing Y/T decreases the plastic SCF and increases the local peak strain. Varying Y/T has no discernible effect on the plastic zone’s extent for 0.87 < Y/T < 1.
The effect of the yield to tensile strength ratio on stress/strain concentrations around holes in high-strength steels
Obers, Siemen F.P.M. (author) / Overal, Jaap J. (author) / Wong, Wei Jun (author) / Walters, Carey L. (author)
Marine Structures ; 84
2022-03-04
Article (Journal)
Electronic Resource
English
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