Journal ArticleDOI
Preform Shape Design in Tube Hydroforming Process Using Equi-Potential Line Method
S. A. Tabatabaei,G. Faraji,M. Mosavi Mashadi,M. Shariat Panahi,S. M. Tabatabaee,R. Bagheri Ghahvechi +5 more
Reads0
Chats0
TLDR
In this paper, a new technique based on the equi-potential line (EPL) designed in the electric field was used for the first time to find an appropriate preform shape in the tube-hydroformed component.Abstract:
The quality of a tube-hydroformed component and the tooling cost and processing time involved in the process are notably affected by the component's preform Hence, it is necessary to produce a proper preform shape for the successful hydroforming from the initial tube to final shape In this article, a new technique based on the equi-potential line (EPL) designed in the electric field was used for the first time to find an appropriate preform shape in THF (Tube Hydroforming) process The equi-potential line generated between two conductors of different voltages show similar trends for minimum work path between the initial and final shapes Based on this similarity, the equi-potential line obtained by arrangement of the initial tube and final die was used for preform design The finite element (FE) method was employed to find the forming pressure to form the preform shape in the die cavity, and then the effectiveness of this method was compared with previous methods It was shown that the new method was siread more
Citations
More filters
Journal ArticleDOI
Experimental and numerical study on formability in tube bulging: A comparison between hydroforming and rubber pad forming
TL;DR: In this paper, the authors used a numerical approach to estimate the initiation and evolution of weld-seam damage in the bulging of a tube with oil pressure using numerical approach.
Journal ArticleDOI
Application of equi-potential lines method for accurate definition of the deforming zone in the upper-bound analysis of forward extrusion problems
TL;DR: In this paper, the concept of Equi-Potential Lines (EPLs) was applied for an accurate definition of the deforming zone in the upper-bound solution of the extrusion process.
Journal ArticleDOI
Application of the Equi-Potential Lines Method in Upper Bound Estimation of the Extrusion Pressure
TL;DR: In this paper, the notion of Equi-Potential Lines (EPLs) was applied to pressure estimation in extrusion process for the first time, where the initial billet and square die were considered and two different potentials were assigned to them, and then EPLs were drawn between two shapes that show the minimum work path between the entry and exit cross sections.
Journal ArticleDOI
Quantitative analysis of orange peel during tension of 6063 alloy spun tubes
TL;DR: In this paper, the surface roughness of a trapezoidal tube with different grain sizes was analyzed using a laser scanning confocal microscope and electron back-scattered diffraction (EBSD).
Journal ArticleDOI
Hydroironing: A Novel Ironing Method with a Higher Thickness Reduction
TL;DR: In this article, a new method called hydroironing is proposed for producing cup shaped components especially those with lower formability to overcome the problem of low ironing limit ratio in the conventional ironing process.
References
More filters
Journal ArticleDOI
A new approach to preform design in metal forming with the finite element method
TL;DR: In this paper, a new approach to preform design is introduced, as a unique application of the finite element method to the problems in metal forming, where the concept involved in the approach is to trace backward the loading path in the actual forming process from a given final configuration.
Journal ArticleDOI
A new method of preform design in hot forging by using electric field theory
TL;DR: In this paper, the equi-potential lines generated between two conductors of different voltages were used to find the minimum work paths between the undeformed shape and the deformed shape.
Journal ArticleDOI
Finite element analysis of tube hydroforming processes in a rectangular die
Yeong-Maw Hwang,Taylan Altan +1 more
TL;DR: In this paper, the authors used the finite element method to explore the plastic flow pattern of a circular tube that is hydraulically expanded or crushed into a rectangular cross-section.
Journal ArticleDOI
Analytical and numerical approach to prediction of forming limit in tube hydroforming
TL;DR: In this paper, an analytical and numerical analysis of the forming limit in tube hydroforming under combined internal pressure and independent axial feeding is discussed, where Swift's criterion for diffuse plastic instability is adopted based on Hill's general theory for the uniqueness to the boundary value problem.
Journal ArticleDOI
Evaluation of effective parameters in metal bellows forming process
TL;DR: In this article, a new method has been proposed for manufacturing of the metal bellows and important parameters such as initial length of tube, internal pressure, axial feeding and velocity, mechanical properties and the type of materials were investigated by finite element (FE) analysis (LS-Dyna) and experimental tests.