Tailored work hardening descriptions in simulation of sheet metal forming

2013 ◽  
Author(s):  
Henk Vegter ◽  
Hans. Mulder ◽  
Peter van Liempt ◽  
Jan Heijne
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Work Hardening ◽  
Metal Forming

scholarly journals Modeling of Cross Work Hardening and Apparent Normality Loss after Biaxial–Shear Loading Path Change

Symmetry ◽  
2022 ◽  
Vol 14 (1) ◽  
pp. 142
Author(s):  
Yanfeng Yang ◽  
Cyrille Baudouin ◽  
Tudor Balan
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Work Hardening ◽  
Metal Forming ◽  
Material Model ◽  
Shear Loading ◽  
Loading Path ◽  
Forming Simulation ◽  
Apparent Loss ◽  
Specific Loading

The specific loading-path change during sheet metal forming may lead to some abnormal deformation phenomena. Two-stage orthogonal loading paths without elastic unloading have revealed a phenomenon of apparent loss of normality, further modeled in the literature by non-normality theories. In this paper, a particular orthogonal strain-path change is investigated using the Teodosiu–Hu hardening rule within an associated plasticity framework. The results indicate that cross work-hardening has a significant contribution to the apparent loss of normality and subsequent asymmetric yield surface evolution. Detailed contributions of the model’s ingredients and features are clarified. The developed material model is intended for sheet metal forming simulation applications.

Springback Analysis in Sheet Metal Forming of Non-linear Work-Hardening material Under Pure Bending

2016 ◽  
Vol 98 (2) ◽  
pp. 155-170 ◽  
Author(s):  
Radha Krishna Lal ◽  
Jai Prakash Dwivedi ◽  
Manish Kumar Bhagat ◽  
Virendra Pratap Singh
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Work Hardening ◽  
Metal Forming ◽  
Pure Bending ◽  
Hardening Material ◽  
Non Linear

ИССЛЕДОВАНИЕ ТОЧНОСТИ ДЕТАЛЕЙ, ПОЛУЧАЕМЫХ ПРИ РАЗДЕЛИТЕЛЬНЫХ ОПЕРАЦИЯХ В ПЕРЕНАЛАЖИВАЕМЫХ ШТАМПАХ

2018 ◽  
pp. 52-63
Author(s):  
Е. А. Фролов ◽  
В. В. Агарков ◽  
С. И. Кравченко ◽  
С. Г. Ясько
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Balance Method ◽  
Experiment Planning ◽  
Practical Recommendations

To determine the accuracy of the readjustable punches for separating operations (perforation + punching out) of sheet-metal forming, the accuracy parameters were analyzed using the random balance method using the method of experiment planning. Analytical dependencies are obtained to determine the values of deviation of the outer and inner contour dimensions of perforated and punched out sheet parts. From the dependencies obtained, it is possible to estimate and predict the value of deviation in the dimensions of the resulting part at any time during the operation of the punch. Practical recommendations on the calculation of the actuating dimensions of the working elements (stamping punch, matrix) of readjustable punches are offered.

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