Plate slenderness limits for high strength steel sections

Rasmussen, Kim J.R.; Hancock, Gregory J.

doi:10.1016/0143-974x(92)90037-f

Cited by 219 publications

(88 citation statements)

References 4 publications

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“…While the patterns and magnitudes of residual stresses in structural carbon steel cross-sections have been studied extensively [12,13], those in stainless steel sections [5,14,15], particularly welded sections [16][17][18][19] have received less attention.…”

Section: Residual Stress Measurementsmentioning

confidence: 99%

Laser-welded stainless steel I-sections: Residual stress measurements and column buckling tests

Gardner

Theofanous

2016

Engineering Structures

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Laser-welding is a high precision fabrication process suitable for joining a wide range of steels and stainless steels. Laser-welded structural stainless steel members, for which there are currently little experimental data owing to their recent introduction to the construction industry, are the focus of the present study. To address the lack of test data and to investigate their structural response, a total of 9 stub column tests and 22 flexural buckling tests (14 buckling about the minor axis and 8 about the major axis) have been performed on laserwelded austenitic stainless steel I-section members. Complementary tensile coupon tests, initial geometric imperfection measurements, and residual stress measurements have also been carried out and are reported herein. Based on the results obtained, a representative residual stress pattern is proposed, the design provisions of Eurocode 3 Part 1.4 and the continuous strength method are assessed, and column buckling curves for laser-welded stainless steel I-section members are recommended. Gardner, L., Bu, Y. and Theofanous, M. (2016). Laser-welded stainless steel I-sections: residual stress measurements and column buckling tests. Engineering Structures. 127, 536-548. 2

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Section: Residual Stress Measurementsmentioning

confidence: 99%

Laser-welded stainless steel I-sections: Residual stress measurements and column buckling tests

Gardner

Theofanous

2016

Engineering Structures

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“…Observing a similar trend in the carbon steel data assembled herein, εu was also considered to depend on the ratio of yield stress fy to ultimate tensile stress fu. The experimental ultimate strains εu are plotted against the corresponding fy/fu ratios for the data from 537 hot-rolled and 272 cold-formed [41,43,45,[71][72][73][74][75][76][77][78][79][80][81][82][83][84][85][86][87] carbon steel tensile coupon tests, as shown in Fig. 5.…”

Section: Predictive Expressions For εU and εShmentioning

confidence: 99%

Stress-strain curves for hot-rolled steels

Yun

Gardner

2017

Journal of Constructional Steel Research

335

177

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The use of advanced analytical and numerical modelling in structural engineering has increased rapidly in recent years. A key feature of these models is an accurate description of the material stress-strain behaviour. Development of standardised constitutive equations for the full engineering stress-strain response of hot-rolled carbon steels is the subject of the present paper.The proposed models, which offer different options for the representation of the strain hardening region, feature an elastic response up to the yield point, followed by a yield plateau and strain hardening up to the ultimate tensile stress. The Young's modulus E, the yield stress fy and the ultimate stress fu are generally readily available to the engineer, but other key parameters, including the strains at the onset of strain hardening and at the ultimate stress, are not, and hence require predictive expressions. These expressions have been developed herein and calibrated against material stress-strain data collected from the literature. Unlike the widely used ECCS model, which has a constant length of yield plateau and constant strain hardening slope, the proposed models, reflecting the collected test data, have a yield plateau length and strain hardening characteristics which vary with the ratio of yield to ultimate stress (i.e. with material grade). The proposed models require three basic input parameters (E, fy and fu), are simple to implement in analytical or numerical models, and are shown herein to be more accurate than the widely employed ECCS model. The proposed models are based on and hence representative of modern hot-rolled steels from around the world.

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“…고강도 강재는 일반 강도의 강재와 기계 및 물리 적 특성의 차이가 있으므로 고강도 강재의 현행 설계 기준에 의 적용성에 대한 검토가 반드시 필요하다 [4], [5], [6] . 고강도강에 대한 연구는 미국에서는 1960년부터 진행되 어, ASTM에 A514(항복강도 690MPa, 평판두께 150mm 까지)와 A709 Grade 100W(항복강도 690MPa, 평판두께 64mm, 교량용)의 강종이 개발되어 구조물에 사용되고 있고, 일본에서도 1970년대 초부터 관심을 갖기 시작하여 HT80 (인장강도 780MPa), HT100(인장강도 950MPa), H-SA700 (인장강도 780MPa) 등의 강종이 개발되어 시범적으로 사용 되고 있다 [7] .…”

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