A New Method for Representation of Pipe Bending Process Using Wire Mandrel

علوم کاربردی و محاسباتی در مکانیک

Article 10, Volume 29, Issue 2 - Serial Number 18, December 2017, Pages 119-128   

Document Type: مقاله کوتاه

DOI: 10.22067/fum-mech.v28i1.37810

Authors

mohamadreza rajabi^{* 1}; M. rezaei zadeh²; seyed uosof ahmadi brooghani³

¹Birjand university

²Hi-tech university of kerman

³university of birjand

Abstract

Bent pipes have been widely used in industrial usage. In this work different materials have been used as mandrel and it is realized that a bunch of flexible wire is more preferable to optimize bending parameters. This way doesn’t need laborious adjustments and because common flexible wires have plastic deformation even during excessive bending angles, they can be used so many times and also they are easy to remove after bending process. Cross section distortion, cracking at the extrados, wrinkling at the intrados, spring back phenomenon and wall thickness change are issues associated with pipe bending. In this work the effect of flexible wires on bending parameters has been analyzed and the results are confirmed with finite element simulation..

Keywords

pipe bending; wire mandrel; cross section distortion; spring back; wall thickness change

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