Introduction of laminated supporting tools in water jet incremental sheet metal forming

Jurisevic, Bostjan; Šajn, Viktor; Kosel, Franc; Junkar, Mihael

doi:10.1007/s00170-007-0994-z

Cited by 26 publications

(17 citation statements)

References 9 publications

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“…In transient period the fluid jet is reflected from rigid surface At the interface surface between the WJ and the rigid wall the pressure increased, what can be observed on Fig. 7, where numerically simulated pressure profiles are plotted for all case of water pressure (6,8,10 and 12 MPa). In this case, the origin of the horizontal axis represents the WJ centerline.…”

Section: Numerical Simulationsmentioning

confidence: 69%

“…With further experimental research of Jurisevic et al [8] it was found that introduction of laminated support tool has positive influence on increasing of technological window. The main influence of supporting tool is to reduce the influence of bending introduced by water jet force.…”

Section: Advance In the Field Of Wjismfmentioning

confidence: 97%

“…(7,8) are as follows: C μ = 0.009, σ k = 1.0, σ sT = 1.3, C 1sT = 1.44, C 2sT = 1.92. Equations (6,7) are derived based on the closure of time averaged Navier-Stokes equations on the second level [13].…”

Section: Equations Of Free Surface Fluid Flowmentioning

confidence: 99%

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Water jet incremental sheet metal forming: pressure distribution analysis

Šajn

Jurisevic²,

Kosel

2011

Int J Interact Des Manuf

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Incremental Sheet Metal Forming (ISMF) is a very flexible technology for fast prototyping and small batch production of sheet metal parts. This contribution deals with an innovative variant of ISMF, where instead of a rigid tool a Water Jet (WJ) is used as the main tool. Such a process can be addressed as Water Jet Incremental Sheet Metal Forming (WJISMF). The main aim of this paper is to present the technological window for WJISMF and characterize the attributes of the WJ used as the main tool. A Finite Element Analysis (FEA) simulation of axis-symmetrical, incompressible, turbulent, free surface flow was developed to simulate the impact of a WJ on the impingement rigid surface. Measuring the surface pressure distribution at the interface between the WJ and the impingement rigid surface experimentally validated the FEA simulation. Calculated pressure distributions along the surface are in good agreement with those obtained experimentally.

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Section: Numerical Simulationsmentioning

confidence: 69%

Section: Advance In the Field Of Wjismfmentioning

confidence: 97%

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Water jet incremental sheet metal forming: pressure distribution analysis

Šajn

Jurisevic²,

Kosel

2011

Int J Interact Des Manuf

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“…By comparing the ISF and ISF-WJ, they suggested that the ISF-WJ was compared favorably to the conventional ISF in process flexibility, surface integrity, tooling and equipment costs, and environmental impact, except one unfavorable aspect in terms of forming accuracy. To increase the forming accuracy, Jurisevic et al [14] introduced a laminated tool to support the sheet in the ISF-WJ process, which resulted in forming time reduction and part quality improvement. Aiming to derive the technological window of water jet sheet forming process, Sajn et al [15] carried out numerical modeling and finite element simulation to obtain pressure and velocity distributions, by considering turbulent fluid flow through nozzle and water jet impact on a flat rigid surface.…”

Section: Introductionmentioning

confidence: 99%

A study of incremental sheet forming by using water jet

Lü

Bazeer

Cao

et al. 2017

Int J Adv Manuf Technol

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In this work, a variant of the incremental sheet forming (ISF) process, namely the incremental sheet forming by using water jet (ISF-WJ), was studied. In the investigation, an ISF-WJ prototype machine was designed and developed. Different design concepts of the water jet nozzle were proposed and evaluated to achieve the maximum forming pressure by performing computational fluid dynamic (CFD) simulations. Based on the forming pressure distribution modeled by CFD simulations, finite element (FE) models were developed to study the sheet deformation behavior under the ISF-WJ process condition. Based on the understanding gained from the numerical study, experiments were conducted to validate the ISF-WJ process and the developed prototype machine. The results suggest that ISF-WJ is a feasible process to achieve improved surface finish of thin sheet parts. In addition, this study has found that water jet pressure plays an important role in preventing sheet wrinkling and obtaining an accurate geometry of formed parts.

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“…A process of shaping fully formed beer and beverage cans with a rotating high-pressure water jet was described by Emmens, 8 who studied the effects of various machine and material parameters on the forming results. Jurisevic et al 9 introduced the laminated supporting tools used for WJISMF, and the influence of the water jet trajectory on the forming results was investigated in his study. In addition, Chizari et al 10 conducted an investigation on water jet forming of thin wall tubes using a slug of water and a continuous water jet.…”

Section: Introductionmentioning

confidence: 99%

The high-pressure liquid jet incremental forming for the aluminum sheet

Zhang

Lei

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part B:

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High-pressure liquid jet incremental forming, a new die-less forming process, utilizes liquid as a flexible tool to deform the sheet metal. In this article, an oil was used as the forming liquid. Theoretical analysis and numerical simulation were conducted to obtain the influence of jet nozzle geometry on the jetting pressure and velocity, and then, the best conic angle of the nozzle was proven to be 13°. Through analyzing the simulation results, it is found that the preferable jetting distance is between 15 and 30 mm and the dynamic pressure distribution approximately obeys a Gaussian distribution on the cross section of the oil jet. Aluminum sheets with a thickness of 0.3 mm were used in the local bulging experiment and simulation to investigate the process parameters of high-pressure oil jet forming. High-pressure liquid jet incremental forming is one of several high-speed forming methods. To obtain the precise simulation results, the dynamic effect of jetting pressure was studied by using Abaqus/Explicit. The results show that using loading time 0.02 s in the simulation is suitable for the simulation of the dynamic effect caused by the high-pressure oil jet. By comparing the deformation of the sheet under different oil pressures, it can be found that the deformation of the aluminum sheet becomes severe as the oil pressure increases, and the proper oil pressure is 15 MPa for the 0.3-mm-thick LF21 aluminum sheet. To investigate the influence of jetting path on the surface quality of the sheet metal parts, the forming processes of the 0.3-mm-thick LF21 aluminum sheets, with different path intervals, were simulated. The simulation results show that a better forming quality of the workpiece can be obtained when the jetting path interval is 4 mm.

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Introduction of laminated supporting tools in water jet incremental sheet metal forming

Cited by 26 publications

References 9 publications

Water jet incremental sheet metal forming: pressure distribution analysis

Water jet incremental sheet metal forming: pressure distribution analysis

A study of incremental sheet forming by using water jet

The high-pressure liquid jet incremental forming for the aluminum sheet

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