Anisotropic characteristics of materials and basic selecting rules with different sheet metal forming processes

Hu, Weilong; Wang, Z.R.

doi:10.1016/s0924-0136(02)00410-7

Cited by 13 publications

(5 citation statements)

References 3 publications

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“…This figure gives a very clear description with respect to the tendency of the deformation type, i.e. elongation, compression or plane strain; and the forming defect, such as thinning, splitting, or wrinkling [14]. In quadrant I, σ θ > 0, σ ρ > 0, which denotes the stress state of the bulging or plunging process.…”

Section: Loading Loci and Dimensional Changes Of Metal Forming Procesmentioning

confidence: 99%

Uniform principle on stress, strain and yield locus for analysing metal forming processes: the contribution of Prof. Z.R. Wang

Hu¹,

Zhang

Fang

2004

Journal of Materials Processing Technology

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Section: Loading Loci and Dimensional Changes Of Metal Forming Procesmentioning

confidence: 99%

Uniform principle on stress, strain and yield locus for analysing metal forming processes: the contribution of Prof. Z.R. Wang

Hu¹,

Zhang

Fang

2004

Journal of Materials Processing Technology

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“…An analytical model was developed for axisymmetric case on total strain theory and membrane assumption. Hu et al [8] found that the smaller die radius than the punch radius is detrimental for the deformation. Further, this study also presented the effect of geometrical parameters and anisotropic characteristics on stretchcurved flanging by using different sheet metal-forming processes.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Crack and Thinning Behavior of Aluminum Alloy 5052 Sheet in Stretch Flanging Process

Kumar

Ahmed

Panthi

2020

J Fail. Anal. and Preven.

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Stretch flanging is the important sheet metalforming process which is widely used in automobile and aerospace sectors. The formability of sheet metal depends on various parameters such as material properties, geometry of the tool setup and process parameters. In the present work, effects of different die radius and sheet width on deformation behavior of sheet are studied by FEM simulation and experiments. The predicted FEM results are presented in the form of edge crack location and its propagation, crack length, forming load and strain distribution in sheet along the die profile radius. This study indicates that crack length increases with increase in the sheet width, while the crack length decreases with increase in the die radius. It is found that the crack propagation in stretch flanging process is affected by the strain distribution in sheet and this distribution of strain depends on many parameters. The crack initiates during deformation of the sheet at the die corner edge and propagates toward the center of the sheet along the die profile radius. Simulation results are compared with the experimental one in terms of crack length and variation in sheet thickness. FE simulation results are found in very good agreement with experimental results. Fractography study is also presented in terms of size, shape of the dimples along with their distribution on the fractured surface. Keywords Stretch flanging process Á Finite element simulation Á Edge crack Á Crack length Á Forming load Á Strain and thickness distribution Á Fractography

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“…Such yield models often make their applications more unwieldy manipulations, particularly in relation to wishfully analytical solutions. In order to avoid such problems, many researchers today still prefer to use Hill's quadratic yield model on developing new theories (Alexandrov and Kontchakova, 2005;Atienza et al, 2005;Bocciarelli et al, 2005;Boumaiza et al, 2006;Cao and Wang, 2000;Capsoni et al, 2001;Choi et al, 2006a,b;Colak, 2004;Dafalias, 2000;Deshpande et al, 2001;Haddadi et al, 2006;Han, 2002;Han et al, 2002;Hill, 2000Hill, , 2001Hu and Wang, 2002;Karabin et al, 2003;Khalfallah et al, 2002;Kim et al, 2000;Kleiber et al, 2002;Kuroda, 1997Kuroda, , 1999Tvergaard, 2001, 2004;Legarth, 2003Legarth, , 2004Legarth, , 2005Legarth and Richelsen, 2006;Li and Yu, 2006;Liu and Chang, 2005;Oñate and Flores, 2005;Olso and Kyriakides, 2003;Pickett et al, 2004;Potirniche et al, 2006;Pourboghrat et al, 2000;Singh and Ray, 2002;Song et al, 2005;Sriram and Wagoner, 2000;Stoughton, 2000;Sun et al, 2004;Tamuzs et al,...…”

Section: Introductionmentioning

confidence: 99%

A novel quadratic yield model to describe the feature of multi-yield-surface of rolled sheet metals

Hu¹

2007

International Journal of Plasticity

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Anisotropic characteristics of materials and basic selecting rules with different sheet metal forming processes

Cited by 13 publications

References 3 publications

Uniform principle on stress, strain and yield locus for analysing metal forming processes: the contribution of Prof. Z.R. Wang

Uniform principle on stress, strain and yield locus for analysing metal forming processes: the contribution of Prof. Z.R. Wang

Investigation on the Crack and Thinning Behavior of Aluminum Alloy 5052 Sheet in Stretch Flanging Process

A novel quadratic yield model to describe the feature of multi-yield-surface of rolled sheet metals

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