On the hydrodynamic deep-drawing process

Tirosh, J.; Konvalina, Peter

doi:10.1016/0020-7403(85)90075-x

Cited by 35 publications

(15 citation statements)

References 4 publications

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“…Yossifon and Tirosh [47][48][49] proposed the concept of maximum drawing ratio (MDR). It was confirmed that the liquid pressure in the die cavity is very important for preventing the instability of the sheet.…”

Section: Theoretical Analysis and Basic Experimentsmentioning

confidence: 99%

Hydroforming highlights: sheet hydroforming and tube hydroforming

Lang

Wang

Kang

et al. 2004

Journal of Materials Processing Technology

228

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Section: Theoretical Analysis and Basic Experimentsmentioning

confidence: 99%

Hydroforming highlights: sheet hydroforming and tube hydroforming

Lang

Wang

Kang

et al. 2004

Journal of Materials Processing Technology

228

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“…Tirosh and Konvalina [12] have proposed the following analytical method to estimate the limiting draw ratio theoretically in case of hydro-mechanical deep drawing:…”

Section: Simulated and Experimental Ldr In Conventional (Cdd) And Hydmentioning

confidence: 99%

“…Through this gap, hydrodynamic flow takes place. So the analysis of the hydrodynamic flow [12] was used in the formulation of the above analytical method. It is important to note that this is the upper bound analysis of calculating LDR.…”

Section: Simulated and Experimental Ldr In Conventional (Cdd) And Hydmentioning

confidence: 99%

Application of a neural network to predict thickness strains and finite element simulation of hydro-mechanical deep drawing

Singh

Kumar

2004

AMT

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In this paper an artificial neural network (ANN) is used to predict the thickness along a cup wall in hydromechanical deep drawing. This model uses a feed-forward backprorogation neural network. After using the experimental results to train and test the network, the model was applied to new data for the prediction of thickness strains in hydro-mechanical deep drawing. The results are promising. In the present work, we also attempt to perform a finite element simulation of the process for the two dimensional axi-symmetric case using explicit finite element code LS-DYNA 2D. Counter pressure on the blank is applied by specifying the pressure boundary conditions. A comparison was made between simulated, experimental and ANN results of hydro-mechanical deep drawing using low carbon extra deep drawing grade steel sheets of 0.96 mm thickness. It was also found that by hydro-mechanical deep drawing, a higher drawability and a more uniform thickness distribution were obtained when compared to conventional deep drawing.

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“…However, still many black boxes exist in the sheet hydroforming, especially for the quality of the formed parts there is no definitive rules to determine according to the certain process parameters [4,5]. This paper investigated the innovative hydromechanical deep drawing with uniform pressure onto the blank, which has a very clear boundary condition for the pressure in the die cavity that makes it much easier to simulate than in the other HDD processes [6].…”

Section: Introductionmentioning

confidence: 99%