Prediction of forming limit curve at fracture for sheet metal using new ductile fracture criterion

被引：14
|
作者：
Dizaji, Shahram Abbasnejad [1 ,4 ]
Darendeliler, Haluk [2 ]
Kaftanoglu, Bilgin [3 ]
机构：
[1] TED Univ, Dept Mech Engn, TR-06420 Ankara, Turkey
[2] Middle East Tech Univ, Dept Mech Engn, TR-06800 Ankara, Turkey
[3] Atilim Univ, Dept Mfg Engn, TR-06836 Ankara, Turkey
[4] Middle East Tech Univ, Ankara, Turkey
来源：
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS | 2018年 / 69卷
关键词：
Fracture; Anisotropic material; Constitutive behavior; Energy methods; Finite elements; PLASTIC INSTABILITY; PATH;
D O I：
10.1016/j.euromechsol.2018.01.003
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The application of ductile fracture criteria (DFCs) in numerical analysis of sheet metal forming processes can lead to the accurate determination of the fracture initiation. In this study, a new uncoupled ductile fracture criterion (DFC) has been developed which considers the effects of material parameters on the forming limit curves (FLCs) and can be easily implemented in the finite element codes. Two different constitutive models have been employed with the new DFC in order to evaluate the results obtained for fracture prediction. Various experimental tests have been utilized to validate the new criterion and its results are also compared with other well-known uncoupled DFCs. It is observed that the new criterion predicts the ductile fracture for all aluminum, steel and stainless steel materials better than the former criteria.
引用
收藏
页码：255 / 265
页数：11
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