Hysteretic behaviour of high strength S690 steel materials under low cycle high strain tests

Ho, H. C.; Liu, X.; Chung, Kwok Fai; Elghazouli, A.Y.; Xiao, Meng

doi:10.1016/j.engstruct.2018.03.041

Cited by 28 publications

(20 citation statements)

References 9 publications

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“…In order to assess mechanical properties of the high strength S690 steels under cyclic actions, it is essential to adopt suitable loading protocols with specific ranges of strain amplitudes which vary in a format with relevant magnitudes and frequencies [8,9,23,24]. According to the existing testing standards, there are many loading protocols for cyclic tests proposed by various researchers for a wide range of engineering disciplines [10][11][12][13][14][15].…”

Section: Common Loading Protocols For Cyclic Testsmentioning

confidence: 99%

“…As a pilot study into the hysteretic behavior of the high strength S690 steels, a systematic experimental investigation was conducted by the authors [8] in which a total of 36 monotonic and cyclic tests on specially designed coupons, namely, funnel-shaped coupons, of the S690 steels were conducted. Both the geometry and the dimensions of these coupons are illustrated in Figure 2.…”

Section: Previous Research By the Authorsmentioning

confidence: 99%

“…It is generally recognized that the high strength S690 steels behave differently from those S235 and S460 steels, owing to their different forms of microstructures produced to different manufacturing methods and delivery conditions [3][4][5][6][7]. Moreover, the mechanical properties of these steels obtained from the monotonic tensile tests are often found to be very different [8,9] to those obtained from cyclic tests. Therefore, there is a need to investigate simultaneously the structural responses of both the S355 and the S690 steels directly from monotonic tensile tests as well as cyclic tests in order to establish whether the concern on reduced ductility in the high strength S690 steels is justified.…”

Section: Introductionmentioning

confidence: 99%

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Cyclic deformation characteristics of S355 and S690 steels under different loading protocols

Guo

Chung

et al. 2020

Engineering Structures

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Despite of excellent high strength to self-weight ratios of the S690 steels, when compared with the S355 steels, there is a widespread concern regarding the ductility of the S690 steels. It is generally considered that the ductility of the S690 steels is significantly lower than that of the S355 steels -this is the general understandings the authors attempt to investigate. This paper presents an experimental investigation into cyclic deformation characteristics of both S355 and S690 steels through low-cycle high-strain cyclic tests with two different loading protocols. A detailed account of the results of 32 cyclic tests on both the S355 and the S690 funnel-shaped coupons is presented. Effects of four different target strains and two different loading frequencies are also examined in details. For the ranges of loading protocols, strain amplitudes, and frequencies considered, the hysteretic responses of these coupons of the two steels are compared directly in terms of engineering stress-strain curves based on their nominal diameters. Microstructures of the fractured coupons of the two steels are also identified for comparison.Contrary to the general understandings, it is demonstrated that the high strength S690 steels do have a good ductility under both monotonic and cyclic actions. Moreover, depending on specific loading protocols and target strains, the cyclic deformation characteristics of the S690 steels are demonstrated to be superior to those of the S355 steels in terms of the number of cycles completed prior to failure and their corresponding energy dissipation characteristic under various target strains up to ±10.0%.The findings of this experimental investigation highlight the importance of establishing ductility requirements and cyclic deformation characteristics for the high strength S690 steels in accordance with specifically designed cyclic tests rather than relying solely on conventional monotonic tensile tests.

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Section: Common Loading Protocols For Cyclic Testsmentioning

confidence: 99%

Section: Previous Research By the Authorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cyclic deformation characteristics of S355 and S690 steels under different loading protocols

Guo

Chung

et al. 2020

Engineering Structures

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“…For example, the ultimate strain (i.e. the engineering strain at the tensile strength) of S690 steel material is approximately 6-8%, and the ratio of the tensile strength to the yield stress is close to unity [20,21]. The lower ductility of HSS material compared with NS material (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…The load demand on foundations can also be reduced by using a lighter superstructure constructed of HSS members. The attractiveness of HSS construction has stimulated research on HSS material properties [17][18][19][20], HSS-based connections/components [21][22][23][24],…”

Section: Introductionmentioning

confidence: 99%

Block shear failure of S275 and S690 steel angles with single-line bolted connections

Jiang

Yam

et al. 2020

Journal of Constructional Steel Research

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Structural Responses of High Strength S690 Welded Sections Under Different Cyclic Actions

Guo

Xiao

et al. 2020

Lecture Notes in Civil Engineering

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Hysteretic behaviour of high strength S690 steel materials under low cycle high strain tests

Cited by 28 publications

References 9 publications

Cyclic deformation characteristics of S355 and S690 steels under different loading protocols

Cyclic deformation characteristics of S355 and S690 steels under different loading protocols

Block shear failure of S275 and S690 steel angles with single-line bolted connections

Structural Responses of High Strength S690 Welded Sections Under Different Cyclic Actions

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