Springback Simulation in Air Bending of Titanium Alloy Sheet Using Solid Shell Element

DOI

10.2991/icsmim-15.2016.111How to use a DOI?

Keywords

springback; air bending; solid shell element; mesh discretization; integration scheme.

Abstract

Accuracy improvement of springback prediction is a major concern in finite element simulation of sheet metal bending process, especially for the materials with high elastic recovery. This work adopts solid shell nite element for springback simulation and improves the simulation accuracy by means of rationalizing mesh discretization and through-thickness integration scheme. Meanwhile, air bending experiment of titanium alloy Ti-6Al-4V was carried out to examine the simulation result. Research results demonstrate that solid shell element has better performance than thick shell element in springback simulation. The accuracy can be improved evidently by extending the mesh refinement area to 2 times of sheet thickness from the bending corner. The optimal number of integration points varies with the bending radius and the limited error tolerance.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xuesong Fu
AU  - Kang Li
AU  - Wei Sun
AU  - Chengfang Liu
AU  - Guoqing Chen
AU  - Wenlong Zhou
PY  - 2016/01
DA  - 2016/01
TI  - Springback Simulation in Air Bending of Titanium Alloy Sheet Using Solid Shell Element
BT  - Proceedings of the 2015 4th International Conference on Sensors, Measurement and Intelligent Materials
PB  - Atlantis Press
SP  - 596
EP  - 602
SN  - 2352-538X
UR  - https://doi.org/10.2991/icsmim-15.2016.111
DO  - 10.2991/icsmim-15.2016.111
ID  - Fu2016/01
ER  -