Die shape design for T-shape tube hydroforming

Kwan, Chin Tarn; Lin, Chia‐Hua; Luo, Yao; Hu, Wei-Wen; Jau, T.-C.

doi:10.1007/s00170-003-1588-z

Cited by 11 publications

(11 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first type is T-shaped die. Kwan et al and Kwan and Lin [4,5] proposed two methods for producing die shape for T-shaped tube hydroforming, and studied the influences of the die, the internal pressure, the axial feed and the counterforce on the workpiece formability using the finite element code DEFORM-3D. Hwang Yeong-Maw and Lin Yi-Kai [6] studied the effects of the material properties, the loading paths and the friction between the die and the tube on the forming results of T-shaped parts.…”

Section: Introductionmentioning

confidence: 96%

Study of tube hydroforming in a trapezoid-sectional die

Zhang

et al. 2009

Thin-Walled Structures

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 96%

Study of tube hydroforming in a trapezoid-sectional die

Zhang

et al. 2009

Thin-Walled Structures

View full text Add to dashboard Cite

“…The die shape design has a crucial importance regarding to the formability and friction during the process. As define in [5] an IFM geometry is obtained and meshed with triangular shell elements. Friction is applied between the part and the rigid dies.…”

Section: Numerical Schemementioning

confidence: 99%

“…Optimization of the forming parameters as well as the die shape are usually made regarding thickness repartition over the structure [2,5]. But formability and final part load carrying capacity should be both taken into account to improve the load path.…”

Section: Introductionmentioning

confidence: 99%

Plastic instabilities analysis during T-shaped tubes hydro-forming process

Sornin

Fayolle²,

Bouchard

et al. 2009

Int J Mater Form

View full text Add to dashboard Cite

International audienceDuring T-shaped or Y-shaped tubes hydroforming the tube wall is flatten on the external die. This "in die" forming involves an important compressive stress along the outer normal direction directly related to the inflating pressure. In this particular case plastic instabilities and damage evolution are strongly dependent on the sign of hydrostatic stress. Hydroforming simulations of T-shaped and Y-shaped thick tubes are performed using an elastoplastic model implemented in Forge-2005 (fully implicit Finite Element Method code). A three dimensional analysis is ran using tetrahedral solid elements. An augmented Modified Maximum Force Criterion coupled to an undamage behavior law is expressed in the sheet tangent plan basis. This criterion is compared to a fully coupled Lemaitre damage model. Due to low triaxiality state, damage only growth in specifical regions. This study highlights the interest of continuum damage modeling for the formability and the final part load carrying capacity prediction for "in die" hydroforming

show abstract

“…The die shape design has a crucial importance regarding to the formability and friction during the process. As define in ( [1]) an IFM geometry is obtained and meshed with triangular shell elements using the IDEAS c software. Friction is applied between part and the rigid dies.…”

Section: Constitutive Modelingmentioning

confidence: 99%

“…Optimization of the forming parameters as well as the die shape are usually made regarding formability or thickness repartition over the structure ([2], [1]). But the finale part load carrying capacity must be taken into account to define an improved load path.…”

Section: Introductionmentioning

confidence: 99%

Thermoelastoplasticity applied to T-shaped tube hydroforming optimization

Sornin

Massoni

2008

Int J Mater Form

View full text Add to dashboard Cite

Hydroforming simulation of T-shaped tube is performed using an thermoelastoplastic model implemented in Forge-2005 c (fully implicit FEM code). A thick cylindrical AA-6060-T4 aluminium alloy tube is inflated in a T-shaped die. A third tool limits the material flow in the central branch during loading. An iterative scheme is used to obtain the load path. A three dimensional case of T-shaped hydroforming is proposed. This work studies the sensitivity of the process regarding to crucial parameters like, die/tube friction, tools kinematic, die radius, inner pressure law and material hardening. Impact on thickness repartition and plastic strain in the finale part is studied. An improved load path is proposed regarding to those aspects. In the same time the position and size of potentially dangerous zones regarding to plastic instability or damage are checked. Looking to the gradients of plastic strain and triaxiality σ hydro /σ mises through the thickness, the interest of a 3D continuum damage tool to predict formability is enlightened.

show abstract

Die shape design for T-shape tube hydroforming

Cited by 11 publications

References 7 publications

Study of tube hydroforming in a trapezoid-sectional die

Study of tube hydroforming in a trapezoid-sectional die

Plastic instabilities analysis during T-shaped tubes hydro-forming process

Thermoelastoplasticity applied to T-shaped tube hydroforming optimization

Contact Info

Product

Resources

About