Vol. 16, No. 5, 2021

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Determining the bending behavior of St-37 rectangular tubes with finite element validation

Emre Esener

Vol. 16 (2021), No. 5, 611–624
Abstract

Tube bending is one of the branches of the metal forming process used in different application areas like manufacturing sectors, automobile, energy, and construction industries. In engineering applications, the bending deformations of thin-walled tubes mostly are under three-point loading, and this is an important energy absorption mechanism, especially in crash events. In this study, the bending behavior of a St-37 thin-walled rectangular profile is investigated experimentally and numerically. Firstly, three-point bending tests are conducted with two different span distances between supports to investigate the effect of span distance. Dynaform – LsDyna commercial software is used for finite element validations. Prediction accuracy of plasticity modeling in simulations is evaluated by employing three different plasticity models: power law, Hill-48, and Yoshida–Uemori. Finite element results are analyzed by performing shape deviation analyses to compare the whole body of the experimental surfaces, including springback distribution.

Keywords
rectangular tube, bending, St-37 steel
Milestones
Received: 31 July 2021
Revised: 9 January 2022
Accepted: 16 January 2022
Published: 12 March 2022
Authors
Emre Esener
Department of Mechanical Engineering
Bilecik Seyh Edebali University
11210 Bilecik
Turkey