Experimental and numerical investigation of the influence of pulsating pressure on hot tube gas forming using oscillating heating

Talebi-Anaraki, Ali; Loh-Mousavi, Mohsen; Wang, Liliang

doi:10.1007/s00170-018-2228-y

Cited by 16 publications

(5 citation statements)

References 20 publications

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“…The shape and size of the tensile specimens are shown in Figure 1. The uniaxial tensile tests were conducted at room temperature, 150°C, 250°C, and 350°C, and the strain rates are 0.02 0.5, and 0.1 s 21 . In order to reduce the test error, the uniaxial tensile test under each condition was repeated three times, and its average value is taken as the final mechanical property parameter of the tube blank.…”

Section: Uniaxial Tensile Tests At Different Temperaturesmentioning

confidence: 99%

“…Talebi-Anaraki et al studied the effect of pulsating pressure on hot tube gas forming by the method of oscillating heating. 21 They found that a reasonable pulsating pressure path can improve the formability and wall thickness distribution of the tube blank during hot gas bulging process. In addition, they used the flame local heating to perform hot gas forming experiments.…”

Section: Introductionmentioning

confidence: 99%

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Plastic wrinkling of thin-walled tubes under axial compression in non-uniform temperature field

Cui

Guo

Wen

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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The main purpose of this paper is to reveal the wrinkling behavior of thin-walled tubes under axial compression in a non-uniform temperature field formed by induction heating on a local position. The distribution of non-uniform temperature fields induced by induction heating and the wrinkling behavior of tubes under axial compression were studied by combining experiments and simulations. Moreover, the thickness and hardness distribution of the wrinkled tube were analyzed. The results show that the maximum temperature difference along axial direction of 5052 aluminum alloy and AZ31B magnesium alloy tubes can reach 129.1°C and 134.7°C in experiments, respectively. In the non-uniform temperature field with a maximum temperature of 250°C, axisymmetric wrinkles can be formed under axial compression on the tubes. With the increase of axial compression, the wrinkle width gradually decreases and its height gradually increases. The contour shape of wrinkles can be fitted accurately with GaussAmp function. There is an obvious thickening phenomenon on the wrinkles and the thickest point is located on the wrinkle top, where the thickness gradually increases with increasing the axial compression. In addition, the microhardness at the wrinkles is lower than that of the original tubes. It decreases with the increase in axial compression. The maximum reduction of microhardness of 5052 aluminum alloy and AZ31B magnesium alloy tubes at the wrinkles are 41.6% and 17%, respectively. This study not only can provide tube blank with useful wrinkles for hydroforming, but also can provide experimental data for establishing buckling theory of inhomogeneous tube shells.

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Section: Uniaxial Tensile Tests At Different Temperaturesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Plastic wrinkling of thin-walled tubes under axial compression in non-uniform temperature field

Cui

Guo

Wen

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…In conjunction, the prospective tensile behaviour improvement along with a fluidic oscillator embedded in a superplastic die can greatly expand the incorporation of superplastically formed parts because of the forming time and prospective forming temperature reduction. The effectiveness of an oscillative pressure forming process has been recently investigated by Anaraki et al resulting in an expanded forming domain when implementing an oscillative pressure forming procedure 29 .…”

Section: Introductionmentioning

confidence: 99%

Experimental study on high temperature tensile behaviour of aluminium alloy AA5083 with oscillating load

Dastgiri

Fuerth

Kiawi

et al. 2023

Sci Rep

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The flow behaviour of aluminium alloy AA5083 at 450 $$^\circ $$ ∘ C has been investigated under quasi-static loading conditions with and without a superimposed oscillating load. Samples were placed under tensile load at constant strain rates ranging from 0.001 to 0.3 s$$^{-1}$$ - 1 . A fixture was designed to generate the required sine-wave oscillation and was attached to the MTS tensile test machine along with a secondary, highly sensitive load cell. The frequencies of the imposed oscillations ranged from 5 to 100 Hz with an amplitude ranging from 0.02 to 0.5-N. It was observed that the imposition of oscillations influences the deformation behaviour of the material. Although the yield and tensile strength remain relatively constant, the total elongation is 8–23% higher under an imposed oscillating load. In addition, the thickness distribution profiles along the gauge length of the tensile specimens were investigated and it was observed that in the presence of oscillations the thickness distribution is more uniform. It was concluded that the presence of a superimposed oscillative load will result in greater deformation capabilities before fracture and postpone the occurrence of damage compared to conventional forming. This phenomenon was further explored utilising a user-defined material subroutine developed for the finite element solver LS-DYNA to simulate the conducted constant load tensile tests.

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“…Talebi-Anaraki et al [13] utilized flame heating for dieless gas forming of aluminum alloy tubes to investigate the bulging behavior in the local heating area. Talebi-Anaraki et al [14] improved the formability of tubes in gas forming by utilizing pulsating pressure paths during oscillating heating of aluminum alloy tubes. Their results indicate that pulsating the gas pressure during forming led to the production of more complex components with uniform thickness distribution.…”

Section: Introductionmentioning

confidence: 99%

Integration of Hot Tube Gas Forming and Die Quenching of Ultra-High Strength Steel Hollow Parts Using Low Pressure Sealed-Air

et al. 2022

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A low pressure sealed-air hot tube gas forming process of ultra-high strength steel tubes was developed not only to change the cross-section of the hollow products by bulging but also to increase the strength of components. Gas-formed components are typically formed by a controlled-gas pressure with extremely high internal pressure, which leads to affected production costs and safety. Moreover, compressing the gas with high pressure requires high energy during its preparation. Therefore, to simplify the internal pressure controlling system and improve the safety factor in gas forming processes, the sealed-air tubes are formed with a quite low initial pressure. The pressure of the sealed air increased with increasing temperature of the air inside the resistance-heated tube, and the bulging deformation was controlled only by axial feeding. The effects of the initial pressure and heating temperature on the bulging deformation and quenchability of the tubes, and the effect of the starting time of axial feeding on the bulging behavior were examined. Consequently, ultra-high strength steel bulged parts were produced even in low initial internal pressure and with the rapid heating of the tubes.

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Experimental and numerical investigation of the influence of pulsating pressure on hot tube gas forming using oscillating heating

Cited by 16 publications

References 20 publications

Plastic wrinkling of thin-walled tubes under axial compression in non-uniform temperature field

Plastic wrinkling of thin-walled tubes under axial compression in non-uniform temperature field

Experimental study on high temperature tensile behaviour of aluminium alloy AA5083 with oscillating load

Integration of Hot Tube Gas Forming and Die Quenching of Ultra-High Strength Steel Hollow Parts Using Low Pressure Sealed-Air

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