Simplified models for residual stresses and equivalent plastic strains in cold-formed steel elliptical hollow sections

Yao, Ye; Quach, Wai-Meng; Young, Ben

doi:10.1016/j.tws.2020.106835

Cited by 13 publications

(3 citation statements)

References 33 publications

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“… The manufacturing process of CF CHS: ( a ) coiling [ 4 , 22 ]; ( b ) uncoiling including flattening [ 4 , 22 ]; ( c ) transverse bending and welding operations [ 4 , 22 ]; and ( d ) shaping operation. (Reprinted from Engineering Structures , Vol 188, Yao Y., Quach W.M., Young B., Finite element-based method for residual stresses and plastic strains in cold-formed steel hollow sections, Figure 1, Pages No.…”

Section: Figurementioning

confidence: 99%

Numerical Study on Residual Stresses and Plastic Strains in Cold-Formed High-Strength Steel Circular Hollow Sections

Yao,

Quach

2023

Materials

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This paper presents a numerical investigation on the residual stresses and co-existent equivalent plastic strains in cold-formed high-strength steel (CFHSS) circular hollow sections (CHS) by using an advanced finite element (FE)-based method. In this method, the entire manufacturing process of the CFHSS CHS was modeled numerically. The accuracy of the numerical predictions of equivalent plastic strains and residual stresses in the CFHSS CHS was verified by comparing the predictions with the existing test results of both the residual stress measurement and load-end shortening response of the stub column. By using the FE-based method, the effects of high-frequency electric resistance welding on the residual stresses and the stub column response were investigated. The through-thickness variations of both the equivalent plastic strains and residual stresses in CFHSS CHS, which are difficult to measure in the laboratory, were explored numerically. Finally, the effect of cold work (which is quantified by the equivalent plastic strains and residual stresses) on the stub column response of CFHSS CHS tubes was evaluated. It can be found that the equivalent plastic strains and longitudinal residual stresses are generally uniform around the cross-section of CFHSS CHS. The transverse and longitudinal residual stresses are generally uniform across each half-thickness, with the inner half-thickness under compression and the outer half-thickness under tension. The results also demonstrate that both the plastic strains and residual stresses may significantly affect the cross-section capacities of CFHSS CHS.

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Section: Figurementioning

confidence: 99%

Numerical Study on Residual Stresses and Plastic Strains in Cold-Formed High-Strength Steel Circular Hollow Sections

Yao,

Quach

2023

Materials

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“…(2020) [236] for elliptical hollow sections (EHS). Similarly, strength enhancement and local geometric can be predicted considering this FE modelling framework for continuous forming [237].…”

Section: Roll Forming Simulationsmentioning

confidence: 99%

Residual stresses in cold-formed steel members: Review of measurement methods and numerical modelling

Díaz

Cuesta

Alegre

et al. 2021

Thin-Walled Structures

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“…The prediction of the residual stresses is also very important for metal forming processes. However, the majority of authors, e.g., [ 39 , 40 , 41 , 42 , 43 , 44 , 45 ], studied this phenomenon as only welding problems or metal forming problems, thus separately and not as two consecutive steps. Some authors [ 46 , 47 , 48 ] dealt with the determination of residual stress in formed members and predicted results were compared with the experiments (sectioning, hole drilling method and X-ray diffraction).…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Analysis of the Residual Stresses in Seamed Pipe in Dependence on Welding and Metal Forming

et al. 2023

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Concerning the increasingly widespread utilization of the finite element method (FEM), the concept of the so-called virtual factory is also gaining ground, and not only in the engineering industry. This approach does not use numerical simulations of individual production technologies separately but treats the entire production process as a chain of interrelated technologies. Thus, the output data from one technology is taken as input data for the following technology. The resulting thermal and mechanical effects are then not only dealt with within one technology but always comprehensively within the production process. In the consideration of the loading and subsequent service lives of manufactured components, values of residual stresses are one of the very important characteristics. For these reasons, this paper deals with the effect of residual stresses’ magnitude and distribution during the formation and the final springback of the seamed pipe end section with and without respect to the influence of the preceding welding. The resulting residual stress values from numerical simulations are subsequently compared with the actual values of residual stresses experimentally measured using X-ray diffraction.

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Simplified models for residual stresses and equivalent plastic strains in cold-formed steel elliptical hollow sections

Cited by 13 publications

References 33 publications

Numerical Study on Residual Stresses and Plastic Strains in Cold-Formed High-Strength Steel Circular Hollow Sections

Numerical Study on Residual Stresses and Plastic Strains in Cold-Formed High-Strength Steel Circular Hollow Sections

Residual stresses in cold-formed steel members: Review of measurement methods and numerical modelling

Experimental and Numerical Analysis of the Residual Stresses in Seamed Pipe in Dependence on Welding and Metal Forming

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