Analytical and numerical study on plastic instabilities for axisymmetric tube bulging

Boumaiza, Soufiene; Cordebois, J.P.; Brunet, Michel; Nefussi, Germaine

doi:10.1016/j.ijmecsci.2005.12.012

Cited by 20 publications

(8 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…have taken into account the initial anisotropy by using the Hill's orthotropic anisotropy criterion and shown that numerical results were closer to experimental ones. Finally, Boumaiza et al (2005) have developed plastic instabilities criterion dedicated to tube shaped materials and demonstrated the effects of geometry and material properties on plastic instability in tube hydroforming.…”

Section: Introductionmentioning

confidence: 99%

Tube bulging test: Theoretical analysis and numerical validation

Velasco

Boudeau

2008

Journal of Materials Processing Technology

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Tube bulging test: Theoretical analysis and numerical validation

Velasco

Boudeau

2008

Journal of Materials Processing Technology

View full text Add to dashboard Cite

“…The knowledge of material behaviour during the process, mechanics of material, loading criteria, and process windows can be found in these research articles. The prediction of necking and the influence of the strain gradient through the diffuse-necking criterion was proposed in [10,11]. The development of the instability failure diagram based on incremental plasticity theory was studied in [12,13].…”

Section: Introductionmentioning

confidence: 99%

A numerical analysis on microtube hydroforging

Nikhare

2021

Advances in Materials and Processing Technologies

View full text Add to dashboard Cite

High-pressure tube hydroforming is a promising method to deform the tubes in various shapes by bulging the tube by applying high internal pressure. However, the challenges lie in the process itself, i.e., requires an expensive pump system and brings excessive thinning in the deformed part section. One option is to reduce the required pressure to solve these difficulties, and the other is to provide the axial feed to the tube in the deformation zone to reduce the thinning. However, due to the higher axial load, the tube buckles. This study is taking advantage of this buckling mechanic to convert it into a successful shaping option. This process is named as tube hydroforging. In this process, the tube was first bulged to a level using internal pressure in an open die without axial feed. Then a minimum pressure was applied, and dies were displaced to shape the tube. The paper studies the process for the microtube. The results noted that lower internal pressure is required to bulge the tube and either no internal or a minimum constant pressure to hydroforge the tube depending on the opening section and thickness of the tube.

show abstract

“…Since bursting during THF is a consequence of prior necking, the retardation of necking is an important way to increase the overall hydroformability of a tube. [14][15][16] The improvement in formability by decreasing the local strain gradient at potential necking points was analyzed both experimentally and by finite element (FE) simulation. 17 In this study, hydroforming of nonaxisymmetric thin-wall tubular component with variable cross sections has been investigated on the viewpoint of leakage prevention and retardation of necking.…”

Section: Introductionmentioning

confidence: 99%

Enhancing hydroformability of nonaxisymmetric part with variable cross section

Kang

Joo

et al. 2015

Advances in Mechanical Engineering

View full text Add to dashboard Cite

Methodology to enhance hydroformability of nonaxisymmetric thin-wall tubular component with variable cross sections was investigated in this study. In order to solve punch leakage problem occurred at nonaxisymmetric thin tube, the leakresistive punch was suggested. Attaching lead at contact region of tube and punch was implemented to prevent leakage occurred due to uneven pressure distribution between punch and tube. And lead patch has also been attached at locally strain-concentrated tube surface to retard strain-concentrated necking. To validate the proposed enhancing methodology, nonaxisymmetric thin-wall tubular model part with variable cross sections has been hydroformed. The successful fabrication of model part that had previously failed during conventional hydroforming processing confirms the feasibility of proposed methodology.

show abstract

Analytical and numerical study on plastic instabilities for axisymmetric tube bulging

Cited by 20 publications

References 26 publications

Tube bulging test: Theoretical analysis and numerical validation

Tube bulging test: Theoretical analysis and numerical validation

A numerical analysis on microtube hydroforging

Enhancing hydroformability of nonaxisymmetric part with variable cross section

Contact Info

Product

Resources

About