Geometric Constraints on the Forming Path in Roll Forming Channel Sections

Panton, S.M.; Zhu, Shengxin; Duncan, J.L.

doi:10.1243/pime_proc_1992_206_063_02

Cited by 28 publications

(8 citation statements)

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“…Their results showed that product quality is achievable by control of forming parameters. Panton et al [4] proposed a new design method that described the variation of bend angle with distance along the strip both within the roll gap and in the unsupported region. They indicated that forming happened in three regions for asymmetry channel section.…”

Section: Introductionmentioning

confidence: 99%

“…Their results showed that severity of forming related to the maximum longitudinal strain in the strip, and this was a function of the maximum slope of the bend angle curve. As mentioned by Panton et al [4] longitudinal strain is a useful parameters for forming severity and maximum longitudinal strain can be used as a limitation of forming in every stand of roll forming. Panton et al [5] in another study investigated longitudinal, transverse and shear strains in the roll forming of channel section.…”

Section: Introductionmentioning

confidence: 99%

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The effects of forming parameters on the cold roll forming of channel section

Safdarian¹,

Naeini

2015

Thin-Walled Structures

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The effects of forming parameters on the cold roll forming of channel section

Safdarian¹,

Naeini

2015

Thin-Walled Structures

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“…The correlation between the theoretical and experimental bend angle curves was discussed in reference (1) and was shown to be good, as in Fig. 4.…”

Section: Model Of the Roll Forming Of Channel Sectionsmentioning

confidence: 55%

The Effects of Geometric Variables in Roll Forming a Channel Section

Zhu

Panton

Duncan

1996

Proceedings of the Institution of Mechanical Engineers, Part B:

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A model of the roll forming process developed previously by the authors was used to examine the effect of geometric variables such as flange length, thickness, bend angle, bend angle increment and roll diameter on the longitudinal strain developed in the roll forming of channel sections. The peak longitudinal strain was found to increase withjange length and then drop when theflange length reaches a critical value. The peak longitudinal strain was found to increase with thickness. In general, increasing the bend angle increment was found to increase the peak longitudinal strain despite the fact that the deformation length also increases. Increasing the roll diameter was found to decrease the peak longitudinal strain. The results from the study explain several roll forming phenomena observed in previous experimental studies.

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“…As mentioned by Panton et al (1992) and Azizi Tafti et al (2012), the peak longitudinal strain is higher for smaller flange lengths. Since the flange lengths in Figures 9 and 10 are relatively small, the elastic deformation is significantly smaller compared to the plastic deformation and the proposed deformation lengths are very close to those of Bhattacharyya.…”

Section: Figure 11mentioning

confidence: 57%

Theoretical extension of elastic-perfectly plastic deformation length in roll forming of a channel section

Tafti

Naeini

Tehrani

et al. 2013

IJMPT

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In this paper, the Young's modulus and the yield strength of the strip are considered in order to modify the deformation length analysis proposed by Bhattacharyya et al. New analytical equations are developed assuming an elastic-perfectly plastic material behaviour and the deformation length analysed for the simple case of roll forming a U-channel; the analytical results are verified by comparison with experimental data found in the literature. The proposed elastic-plastic deformation length is shorter than Bhattacharyya's which is rigid-perfectly plastic. It is observed that the influence of elastic properties on the deformation length is not as significant as the plastic properties; however, the authors believe that the elastic effects become more important under conditions where a major area of the strip is under elastic deformation such as when the flange length is long. 34 R.A. Tafti et al.Reference to this paper should be made as follows: Tafti, R.A., Naeini, H.M., Tehrani, M.S., Rolfe, B.F. and Weiss, M. (2013) 'Theoretical extension of elastic-perfectly plastic deformation length in roll forming of a channel section', Int. J. Materials and Product Technology, Vol. 47, Nos. 1/2/3/4, pp.33-45. Biographical notes: Roohollah Azizi Tafti is a PhD candidate of Manufacturing Engineering at the Tarbiat Modares University where he also received his Master's degree in 2007. His research interests include deformation analysis in sheet metal forming processes and finite element simulation. He has been working on the roll forming process since 2005. Hassan Moslemi Naeini received his PhD in 2000 from the University of Tokyo in Japan, in Manufacturing Engineering. He is currently a faculty member at the Tarbiat Modares University, IR Iran. His research interests include sheet metal forming analysis focusing on roll forming process, hydroforming, and laser forming processes. Mehdi Salmani Tehrani received his PhD in 2007 from the Isfahan University of Technology in Iran, in Mechanical Engineering. He is currently a faculty member at the Isfahan University of Technology. His research interests mostly include stress and deformation analysis in solids and structures (especially in metal forming processes) and finite element simulation. Bernard F. Rolfe received his PhD in 2002 from the Australian National University in Australia on Inverse Modelling Metal Forming Processes. Currently, he is an Associate Professor at the Deakin University in Australia. He has published over 100 refereed articles. His current research focus is the forming of light weight structures, which includes the development of better material models for metal forming. He is the project leader of the AutoCRC's visionary project on lightweight automotive structures.Matthias Weiss received his PhD in 2007 from the Deakin University in Australia, in Material Sciences and Manufacturing. His current research focus is the development of advanced material models and testing methods to understand the effect of microstructure on formability, and to improve the r...

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Geometric Constraints on the Forming Path in Roll Forming Channel Sections

Cited by 28 publications

References 1 publication

The effects of forming parameters on the cold roll forming of channel section

The effects of forming parameters on the cold roll forming of channel section

The Effects of Geometric Variables in Roll Forming a Channel Section

Theoretical extension of elastic-perfectly plastic deformation length in roll forming of a channel section

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