Prediction of residual stresses in high-strength S690 cold-formed square hollow sections using integrated numerical simulations

Xiao, Meng; Hu, Yue; Jin, Hao; Chung, Kwok Fai; Nethercot, D.A.

doi:10.1016/j.engstruct.2021.113682

Cited by 10 publications

(2 citation statements)

References 30 publications

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“…The external corners of these profiles are rounded and not pointed [9,10]. High residual stress is observed at these corners [11][12][13], and both the yield stress and ultimate stress in the corner and adjacent areas are comparatively high [14,15]. In contrast, curtain wall keels produced by welding have sharp external corners and weld seams on the internal corners, leading to high residual stress at these corners.…”

Section: Introductionmentioning

confidence: 96%

Effect of Cold and Hot Compounds Forming on Microstructures and Mechanical Properties in the Deformation Zone of Sharp-Edged High-Strength Steel Sections

Yao,

Han,

et al. 2023

Materials

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We researched the cold and hot composite-forming process, setting the forming speed at 2 m/min, the induction heating frequency at 40 KHz, and the induction current at 3000 A, and manufactured curtain wall steel with sharp corners. We analyzed the microstructure and mechanical properties of the deformation zone of the sharp-edged section using a tensile test, impact test analysis, metallographic observation (OM), fracture morphology observation, and electron backscatter diffraction (EBSD) analysis. The results show that the formed profile had a 96% reduction in the radius of the outer fillet and a 76% increase in the thickness of the corner compared to the pre-formed shape. The tensile strength increased by 3.6%, and the elongation after break increased by 13%. A forming temperature of 850 °C and forming deformation of 70% were determined as the optimum process parameters.

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Section: Introductionmentioning

confidence: 96%

Effect of Cold and Hot Compounds Forming on Microstructures and Mechanical Properties in the Deformation Zone of Sharp-Edged High-Strength Steel Sections

Yao,

Han,

et al. 2023

Materials

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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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Compression tests on stocky and slender columns of high strength S690 cold-formed square tubes

Xiao

Shen

et al. 2022

Engineering Structures

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Prediction of residual stresses in high-strength S690 cold-formed square hollow sections using integrated numerical simulations

Cited by 10 publications

References 30 publications

Effect of Cold and Hot Compounds Forming on Microstructures and Mechanical Properties in the Deformation Zone of Sharp-Edged High-Strength Steel Sections

Effect of Cold and Hot Compounds Forming on Microstructures and Mechanical Properties in the Deformation Zone of Sharp-Edged High-Strength Steel Sections

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

Compression tests on stocky and slender columns of high strength S690 cold-formed square tubes

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