期刊
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
卷 100, 期 -, 页码 270-285出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijsolstr.2016.08.023
关键词
Reverse deep drawing; Tools deformation; Finite element analysis; Material flow; DD3IMP
类别
资金
- Portuguese Foundation for Science and Technology (FCT) by UE/FEDER through the program COMPETE2020 [UID/EMS/00285/2013, P2020-PTDC/EMS-TEC/0702/2014 (POCI-01-0145-FEDER-016779), P2020-PTDC/EMS-TEC/6400/2014 (POCI-01-0145-FEDER-016876)]
- FCT [SFRH/BPD/101334/2014]
- Fundação para a Ciência e a Tecnologia [UID/EMS/00285/2013] Funding Source: FCT
The forming tools are commonly assumed as rigid in the finite element simulation of sheet metal forming processes. This assumption allows to simplify the numerical model and, subsequently, reduce the required computational cost. Nevertheless, the elastic deformation of the tools can influence considerably the material flow, specifically the distribution of the blank-holder pressure over the flange area. This study presents the finite element analysis of the reverse deep drawing of a cylindrical cup, where the forming tools are modelled either as rigid or as deformable bodies. Additionally, the numerical results are compared with the experimental ones, in order to assess the accuracy of the proposed finite element model. Considering the elastic deformation of the tools, the numerical results are in better agreement with the experimental measurements, namely the cup wall thickness distribution. On the other hand, the computational time of the simulation increases significantly in comparison with the classical approach (rigid tools). (C) 2016 Elsevier Ltd. All rights reserved.
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