Computer simulation of axisymmetric upsetting

Antoshchenkov, Yu. M.; Таупек, И. М.

doi:10.3103/s0967091215010039

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The lowest effective strain occurred at the die-specimen contact surface (point 1). This was attributed to the resistance of frictional shear force to the lateral metal flow and the chilling effect of the blank [16,18]. The drum-shaped region (point 3) experienced higher effective strain than point 1, but lower than point 2.…”

Section: Resultsmentioning

confidence: 99%

Numerical simulation on the effect of sample geometry size on the metal flow behaviour during the forging process

Obiko

Mwema

2020

IOPSciNotes

View full text Add to dashboard Cite

This paper reports on the effect of sample geometry size on the metal flow behaviour using Deform TM 3D finite element simulation software. The simulation process was done at forging temperature of 1100°C and upper die speed of 50 mm/second. The friction coefficient between the die and the sample interface was taken to be constant during the simulation process. The results of the effective stress and strain distribution in the deformed sample were reported. The results show that the effective stress and strain distribution in the deformed sample was non-uniformly distributed. The maximum effective strain occurred at the centre of the deformed sample for all the samples tested. The maximum effective stress occurred at the die-sample contact surface. At the contact surfaces, the effective stress decreased with a decrease in the sample size. The effective stress at the centre of the deformed sample increased with a decrease in the sample geometry size.

show abstract

Section: Resultsmentioning

confidence: 99%

Numerical simulation on the effect of sample geometry size on the metal flow behaviour during the forging process

Obiko

Mwema

2020

IOPSciNotes

View full text Add to dashboard Cite

show abstract

“…Wang [19] proposed a thermo-mechanically coupled model to study deformation characteristics in the upsetting of LHDR disk-shaped forgings and the formation mechanism of the laminated crack defect. Additionally, Antoshchenkov [20] simulated upsetting billets with three different height-to-diameter ratios by means of the Simufact Forming software 10.0v. Moreover, through cylindrical upsetting experiments of pure copper, Han [21] examined the influence of specimen size on dry friction in the meso/micro-forming process.…”

Section: Introductionmentioning

confidence: 99%

Simulation and Experiment Study on Cone End Billet Method in Upsetting Billet with a Large Height-to-Diameter Ratio

Fan,

Liu,

Liu

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

A novel upsetting method, called Cone End Billet Upsetting (CEBU), is proposed in this paper to control bulging during the upsetting of large height-to-diameter ratio (LHDR) billets. This new upsetting method is mainly characterized by prefabricating a conical shape at the billet end, which aims to reduce the friction effect between the billet end and the anvil. In order to validate CEBU, the metal flow characteristics during upsetting of LHDR billets with traditional upsetting (TU) and CEBU were analyzed and compared by the finite element method. Experiments were also carried out to examine the deformation characteristics and microstructure of pure copper samples. The results show that, compared with TU, CEBU has a great advantage in restraining bulging and enhancing the compaction effect of upsetting. Meanwhile, bulging can be eliminated in CEBU with a 50% reduction ratio. In addition, aided by the cone end, the metal flow is no longer sensitive to the friction effect at the billet end. From the point of view of restraining bulging, a small taper angle is necessary prior to use. Furthermore, to avoid instability deformation, the height-to-diameter ratio of the billet should be below 3.0. CEBU is effective in suppressing the generation of bulging, but it also increases the pre-forming process for the end of the billet. The study on CEBU in this article is under laboratory conditions, and exploring the industrial application of CEBU will be the focus of our future research.

show abstract

Computer simulation of axisymmetric upsetting

Cited by 2 publications

References 0 publications

Numerical simulation on the effect of sample geometry size on the metal flow behaviour during the forging process

Numerical simulation on the effect of sample geometry size on the metal flow behaviour during the forging process

Simulation and Experiment Study on Cone End Billet Method in Upsetting Billet with a Large Height-to-Diameter Ratio

Contact Info

Product

Resources

About