Residual stresses in steel members: a review of available analytical expressions

Abambres, Miguel; Quach, Wai-Meng

doi:10.1108/ijsi-12-2014-0070

Cited by 50 publications

(22 citation statements)

References 53 publications

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“…The manufacturing process of steel sections plays an important role in the formation of residual stresses and hence the residual stress patterns are different for hot-rolled and welded I-sections. Clarin [10] and Abambres and Quach [11] provided in-depth reviews of a number of previous experimental and analytical work on residual stresses. The residual stresses in hot-rolled as well as welded doubly symmetric and monosymmetric I-sections will be discussed in this section.…”

Section: Residual Stressesmentioning

confidence: 99%

“…Residual stresses in welded I-sections are caused mainly by locally concentrated heating which results in uneven cooling in the cross-section. The welding speed, heat input, number of passes and the technique used in cutting the plates (mill-cut or flame-cut technique) also affect the residual stress pattern and magnitude in welded sections [11]. The significant difference in residual stresses between mill-cut (mechanically cut) and flame-cut (oxygen-cut) plates is observed at the flange tips.…”

Section: Bisymmetric Sectionsmentioning

confidence: 99%

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Influence of Imperfections on the Flexural Resistance of Steel Delta Girders

Masri

Lui²

2019

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Residual stresses and geometrical imperfections are important factors that affect the inelastic lateral-torsional buckling (LTB) capacity of flexural members. In this paper, the influence of the magnitudes of residual stresses and initial geometrical imperfections in the form of member out-of-straightness on the flexural resistance of steel delta girders (SDG) is investigated. Based on test data reported for welded plates and monosymmetric welded I -sections, a residual stress pattern for SDG is proposed. Six different combinations of residual stress and geometrical imperfection magnitudes are then used in a finite element simulation study of a series of SDG under uniform bending and simply -supported boundary conditions. The flexural resistance curves computed for these SDG are compared with one another to demonstrate that both residual stresses and initial member out-of-straightness have a noticeable influence on the moment capacity of SDG, especially in the inelastic LTB region. These curves are also compared against the fle xural strength equations provided in the current AISC specifications. The comparison reveals that the AISC equations often over -predict the flexural strength of SDG. An SDG flexural strength reduction factor is then proposed to allow for the design of th ese SDG using the AISC design equations.

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Section: Residual Stressesmentioning

confidence: 99%

Section: Bisymmetric Sectionsmentioning

confidence: 99%

Influence of Imperfections on the Flexural Resistance of Steel Delta Girders

Masri

Lui²

2019

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“…In addition, M Abambres et al. [10] mentioned that this matter is neglected in the literature due to the lack of studies (Experimental and Numerical) for verification. Therefore, the main motivation of this research paper was to perform 3D-FE to investigate peak longitudinal residual strains of a thin-walled steel plate with large bending angle (≈90°) along member length.…”

Section: Introductionmentioning

confidence: 99%

An investigation on longitudinal residual strains distribution of thin-walled press-braked cold formed steel sections using 3D FEM technique

Mutafi

Yidris

Ishak

et al. 2018

Heliyon

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Steel sections are normally shaped via cold work manufacturing processes. The extent of cold work to shape the steel sections might induce residual stresses in the region of bending. Previously, researchers had performed studies on the influences of local buckling on the failure behavior of steel compression members which shown that failure will happen when most of the yielding has extended to the middle surface in the bend region of the sections. Therefore, these cold work methods may have major effect on the behavior of the steel section and also its load-bearing capability. In addition, another factor may play significant role in formed section's load-bearing capacity which is the longitudinal residual strain. The longitudinal residual strain raised during forming procedure can be used to define the section imperfection of the formed section and its relation to the existence of defects. Therefore, the main motivation of this research paper is to perform three-dimensional finite element (3D-FE) to investigate peak longitudinal residual strains of a thin-walled steel plate with large bending angle along member length. A 3D finite element simulation in ABAQUS has been employed to simulate this forming process. The study concluded that the longitudinal residual strain at the section corner edge was higher than those at the rest of the corner region. These strains at the edge were higher than the yield strain true(εytrue) of the formed section which occurred due to the lack of transverse restraint. This made the plate edge tended to bend toward the normal direction when it was under a high transverse bending. This causes a significant difference in longitudinal strain at the plate edge.

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“…Residual stresses of hot-rolled and cold-formed crosssections, which are caused by uneven cooling and differential plastic deformations respectively, have been investigated in numerous experimental studies [10][11][12][13][14][15][16]. The available analytical expressions used to estimate the locked-in stress distributions for several types of cross-sections have been summarized in a recent review article [17]. However, when an initially straight member made of a hotrolled or cold-formed profile is curved into the desired shape, most of the section exhibits yielding.…”

Section: Introductionmentioning

confidence: 99%

Influence of roller-bending on RHS steel arches: Experimental and numerical investigation

Thanasoulas

Douthe

Gantes

et al. 2018

Thin-Walled Structures

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An experimental and numerical investigation of the influence of residual stresses due to curving in rectangular hollow section steel arches on the overall structural behaviour is presented. Twelve circular arch specimens, grouped in two sets of curvatures, are tested under tension and compression loading. Detailed finite element models are used to simulate in detail the curving procedure as well as the experimental tests and implicit static analyses accounting for geometric and material nonlinearities are carried out. Experimental and numerical results are compared in terms of load-displacement equilibrium paths, strain-gauge measurements and deformed shapes. Overall, a quite good quantitative and qualitative agreement is achieved between FEA and experimental results, demonstrating the capability of the developed finite element models to reliably estimate the residual stress distribution caused by the forming process. The numerically estimated residual stresses are presented for the two sets of specimens, providing good agreement with the models proposed in the literature. Extended plastification at the bottom flange edges of the arches is observed, reducing significantly the member's remaining ductility; the developed accumulated plastic strains are found to be remarkably larger than the longitudinal strains that are expected according to the classic beam theory. Maximum discrepancies of approximately 10% are reported in the structural response of the arches depending on whether the estimated locked-in stress distributions are taken into account or not.

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Residual stresses in steel members: a review of available analytical expressions

Cited by 50 publications

References 53 publications

Influence of Imperfections on the Flexural Resistance of Steel Delta Girders

Influence of Imperfections on the Flexural Resistance of Steel Delta Girders

An investigation on longitudinal residual strains distribution of thin-walled press-braked cold formed steel sections using 3D FEM technique

Influence of roller-bending on RHS steel arches: Experimental and numerical investigation

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