Simulation of explosive welding using the Williamsburg equation of state to model low detonation velocity explosives

Mousavi, A. A. Akbari; Burley, S. J.; Al-Hassani, S.T.S.

doi:10.1016/j.ijimpeng.2004.03.003

Cited by 78 publications

(22 citation statements)

References 9 publications

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“…The Williamsburg type equation of state was employed to model the explosive material. The Williamsburg equation of state has been previously developed for low explosive mixture [11, 12, 16]. The Williamsburg equation of state energy equation in order of N is [11, 12] as follows: …”

Section: Modelling Of Explosive Weldingmentioning

confidence: 99%

“…The reference values of U ref , V ref , S ref and n ref are the Chapman–Jouguet (CJ) values of explosive material. More information on the Williamsburg equation of state can be found elsewhere [11, 12, 16]. To use the Williamsburg equation of state and provide the loading condition ( P ), the following equation was written as a FORTRAN subroutine and was linked to ABAQUS software: …”

Section: Modelling Of Explosive Weldingmentioning

confidence: 99%

“…However, the process could be simulated using finite element method, and most aspects of the welding process could be obtained. A new approach in simulation of explosive welding of plates is expressed by using Williamsburg equation of state to simulate low explosive materials [11, 12]. Some attempts have been reported in the literature to simulate the process.…”

Section: Introductionmentioning

confidence: 99%

“…Some attempts have been reported in the literature to simulate the process. Jetting phenomena and physical parameters such as shear stress and plastic strain were achieved [11, 13]. It has been shown that threshold levels are needed for shear stress and plastic strain to achieve the weld between plates [11, 13].…”

Section: Introductionmentioning

confidence: 99%

“…Jetting phenomena and physical parameters such as shear stress and plastic strain were achieved [11, 13]. It has been shown that threshold levels are needed for shear stress and plastic strain to achieve the weld between plates [11, 13]. However, most of these simulations so far were carried out in two‐dimensional analysis [14, 15].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Correlation Between Numerical Finite Element Simulation and Experiments for Explosive Cladding of Nickel Base Super Alloy on Hot Tool Steel

Khanzadeh

Mousavi

Amadeh

et al. 2012

Strain

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Experimental tests were carried out to explosively clad solution‐annealed Inconel 718 super alloy on quench‐tempered AISI H13 hot tool steel. The tests were performed using various stand‐off distances and explosive–to‐flyer plate mass ratios. Various interface geometries were obtained from these experiments. All the experiments were simulated using ABAQUS version 6.9 finite element software. The Williamsburg equation of state and Johnson–Cook constitutive equation with its corresponding failure equation were used to model the behaviour of explosive and plates, respectively. The experimental results showed that the shape of interface fell roughly into three classes, wavy or wavy with some vortex shedding or smooth‐wavy. Various interface morphologies were achieved by changing the stand‐off distances and explosive–to‐flyer plate mass ratios because of change of impact velocity and dynamic collision angle. Numerical results showed that high localised plastic deformation was produced at the bond interface. Equivalent plastic strain and shear stress could be criteria for transition of interface morphology. Welding window of alloys was also developed.

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Section: Modelling Of Explosive Weldingmentioning

confidence: 99%

Section: Modelling Of Explosive Weldingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Correlation Between Numerical Finite Element Simulation and Experiments for Explosive Cladding of Nickel Base Super Alloy on Hot Tool Steel

Khanzadeh

Mousavi

Amadeh

et al. 2012

Strain

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Atomistic Simulation of the Explosion Welding Process

2012

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Explosive welding (EXW) is an industrial process used to join metals together. [1,2] It is a well established method and has been in use for several decades. In the process, welding occurs in a high velocity collision between metal plates, achieved by using chemical explosives. Figure 1(a) shows the schematic arrangement of the plates in EXW. The clad layer is covered with explosive which is ignited from a point or an edge. The detonation front imposes a momentum to the clad layer which-after plastic deformation-collides with the fixed base metal. The most important process parameters are the cladding plate collision velocity v p , and the collision angle b. These are controlled by adjusting the amount and quality of the explosive and the stand-off distance y 0 . In the EXW processes used in the industry the collision velocity is typically of the order of kilometer per second. Clad layer thicknesses t can be up to centimeters and the total area of welded surface can be several square meters.The advantages of EXW include that it is a ''cold welding'' process and thus free of some of the mechanical and thermodynamic limitations of traditional welding, that it can be used to join almost any pair of metals, including those not weldable by conventional methods, and that it produces a very strong bond, that is often stronger than the weaker of the materials. The joined parts need not be specifically melted for the bonding to take place. This minimizes the formation of intermetallic-often brittle-phases near the interface. EXW is particularly suitable for structures used in harsh environ-ments: high temperatures and pressures, corrosive environments, etc.

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Coupled Electromagnetic–Structural Simulation of Magnetic Pulse Welding

Kapil

Sharma

2015

Advances in Material Forming and Joining

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The present study deals with the coupled magnetic-structural analysis of magnetic pulse welding (MPW) process applied on a tubular workpiece. The study investigates the various criteria required for a successful weld between the mating members through a finite element model. The transient electromagnetic field phenomenon is coupled sequentially with mechanical phenomenon. The coupling between the magnetic field and the electrical circuit is formulated in the electromagnetic part of the model, whereas in the structural part, the impact velocities, the effective plastic strain and the shear stress induced in the workpiece are found from the numerical simulations. A viscoplastic material model with rate-dependent material properties is considered in the structural part. The effect of varying process parameters: input voltage and air gap between the two mating members on weld quality are computed through numerical simulations. Based on the results of the numerical simulations, an optimal weldability window is suggested.

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Simulation of explosive welding using the Williamsburg equation of state to model low detonation velocity explosives

Cited by 78 publications

References 9 publications

Correlation Between Numerical Finite Element Simulation and Experiments for Explosive Cladding of Nickel Base Super Alloy on Hot Tool Steel

Correlation Between Numerical Finite Element Simulation and Experiments for Explosive Cladding of Nickel Base Super Alloy on Hot Tool Steel

Atomistic Simulation of the Explosion Welding Process

Coupled Electromagnetic–Structural Simulation of Magnetic Pulse Welding

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