Cross-section deformation behaviors of a thin-walled rectangular tube of continuous varying radii in the free bending technology

Cheng, Xinyue; Hui, Wang; El-Aty, Ali Abd; Tao, Jie; Wei, Wenbin; Qin, Yuan; Guo, Xunzhong

doi:10.1016/j.tws.2020.106670

Cited by 23 publications

(7 citation statements)

References 30 publications

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“…A parametric investigation was carried out by experiment and numerical modelling on aluminium tubes under dynamic three-point bending by Bilston et al [56]. Cheng et al [57] conducted an investigation on a tubular with a rectangular thin-walled cross-section having a continuously different radius based on the 'simple bending technique' and the influence of the cross-section deformation behaviours. Guo et al [58] examined the wall thickness distribution of Cu-Al bimetallic tubes based on the free-bending process.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on Plastic Strain Distributions and Mechanical Behaviour of a Tube under Bending

et al. 2022

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Tubular pipe structures have been used in various applications—domestic, aviation, marine, manufacturing and material testing. The applications of tubular pipes have been considered greatly in the installation of tubular pipes, marine risers and pipe bending. For the investigation of plastic strains and the mechanical behaviour of a tube under bending, considerations were made utilising an exponent model with assumptions on the plane strain. The bending moment, wall thickness effect, cross-sectional distribution, stresses during bending and neutral layer boundaries were all presented as necessary theoretical formulations on the physics of tubular pipe bending. This model was based on the analytical and numerical investigation. In principle, the application can be observed as the spooling of pipes, bending of pipes and reeling. Comparisons were made on two models developed on the finite element analysis in Simscale OpenFEA, namely the linear-elastic and the elasto-plastic models. This study presents visualization profiles using plastic strain to assess its effect on the tubular pipes. This can increase due to the limitation of plastic deformation on the composite materials selected.

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Section: Introductionmentioning

confidence: 99%

Numerical Study on Plastic Strain Distributions and Mechanical Behaviour of a Tube under Bending

et al. 2022

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“…Additionally, they estimated the equivalent stress and distribution of strain. These findings indicate that the deformation ratio of the cross-section increases as the feeding speed decreases [19]. After comparing the results of the deformation of the double-ridged rectangular tubes using different yield criteria with experimental data, it was concluded that the Barlat/Lian yield criterion is applicable [20].…”

Section: Figure2 Illustration Of Fe Model For the Rdbpmentioning

confidence: 90%

Research Overview on Rectangular Tube Cross-Section Deformation in Rotary-Draw Bending Process

Liu,

Zhang,

Guo

et al. 2024

J. Phys.: Conf. Ser.

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Rectangular tube bending process forming quality is not only affected by the tube material but also geometric dimensions will also be affected by bending mold and related process parameters. Cross-section deformation produced by the tube during the forming process becomes a major constraint to heightening the quality of the tube. The research work and process of cross-section deformation in the rotary-draw bending process (RDBP) of rectangular tubes in theory analysis, experiment research, and finite-element (FE) simulation in recent years is reviewed in this paper. The development trend of research in this field is also proposed.

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“…Additionally, achieving a bending coefficient of 1.7 is possible by optimizing the approach distance and bending die deflection [13]. Ovality of bent pipes increases with feeding speed [1]. Maintaining a 0.05 mm gap between the pipe and bending die has been shown to improve the quality of the pipe's forming [6].…”

Section: Refined Paragraphmentioning

confidence: 99%

Investigating Ovality and Wall-Thinning Behaviors in Free-Form Bending of Thin Pipe Bends with Varying Guider Length and Roller Die Diameter

Periasamy

2023

Preprint

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This study investigates the influence of guider length and roller die diameter on the ovality and thickness reduction of pipe bends formed using the freeform bending method. Finite element simulation is employed to analyze a three-segment pipe bend. The analysis reveals that the beginning of the third bending segment exhibits the highest ovality, which directly correlates with circumferential strain. Optimal values for roller die diameter and guider length are determined for the given geometry, and a spatial bend design is proposed to minimize the percentage of ovality. The findings provide valuable insights for optimizing the bending process and achieving reduced ovality in pipe bends.

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Cross-section deformation behaviors of a thin-walled rectangular tube of continuous varying radii in the free bending technology

Cited by 23 publications

References 30 publications

Numerical Study on Plastic Strain Distributions and Mechanical Behaviour of a Tube under Bending

Numerical Study on Plastic Strain Distributions and Mechanical Behaviour of a Tube under Bending

Research Overview on Rectangular Tube Cross-Section Deformation in Rotary-Draw Bending Process

Investigating Ovality and Wall-Thinning Behaviors in Free-Form Bending of Thin Pipe Bends with Varying Guider Length and Roller Die Diameter

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