Numerical studies on high-velocity impact welding: smoothed particle hydrodynamics (SPH) and arbitrary Lagrangian–Eulerian (ALE)

Nassiri, A.; Kinsey, Brad L.

doi:10.1016/j.jmapro.2016.06.017

Cited by 64 publications

(24 citation statements)

References 22 publications

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“…Due to its good performance in avoiding element distortion, it is beneficial for dealing with some large deformation problems [27]. SPH has been used to research the explosive/impact welding in recent reports [6,7,11,19].…”

Section: Algorithm Selectionmentioning

confidence: 99%

“…Nevertheless, the ALE method is invalid when compared to SPH in terms of modeling the jetting process [6].…”

Section: Algorithm Selectionmentioning

confidence: 99%

“…In the present numerical analysis, the ALE is applied for simulating the explosive and anvil, and the Ti flyer plate and Al base plate are modeled by using SPH method. In SPH, the particle size plays an important role in visualizing the interface morphology and jetting [6,7]. The particle size ∆r is set to 20 µm in this study.…”

Section: Algorithm Selectionmentioning

confidence: 99%

“…Nassiri and With the development of computer software and hardware technologies, the finite element method (FEM) has been applied to study the explosive/impact welding in recent works. Nassiri and Kinsey [6] studied the process of the high-velocity impact welding by using SPH (smoothed particle hydrodynamics) and ALE (arbitrary Lagrangian-Eulerian) methods, respectively. Simulation results of both of these methods, such as interfacial waves, the shear stress, and velocity in the vicinity of the collision point were consistent.…”

Section: Introductionmentioning

confidence: 99%

“…However, the numerical models in aforementioned research simplified the actual explosive welding process, and ignored the explosion of explosives and the acceleration of the flyer plate [6][7][8]11,14]. Basing on the Gurney formula or Richter formula, they regarded the explosive welding process as high-velocity impact welding (HVIW).…”

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation of Ti/Al Bimetal Composite Fabricated by Explosive Welding

Liu

et al. 2017

Metals

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Abstract:In this paper, a 2D numerical model that is more physically realistic was established to simulate the complete process of Ti/Al explosive welding. Basing on the ANSYS/AUTODYN software package, the smoothed particle hydrodynamics (SPH) and arbitrary Lagrangian-Eulerian (ALE) were used for running this simulation. The numerical model can capture the typical physics in the explosive welding process, including the expansion of explosives, flyer plate bending, the impact of metal plates, jetting, and the wavy interface. The variable physical parameters during the explosive welding process were discussed. Most parts of the jet originated from the aluminum plate. According to the model, the jet velocity reached 7402 m/s. The pressure at the detonation point was too small to make the two plates to bond. The pressure could reach an order of magnitude of 10 7 kPa when the detonation energy tended to be stable and was far more than the yield strength of both materials, which resulted in an obvious narrow region of plastic strain emerging close to the collision zone. The signs of shear stresses between the two plates were the opposite. The interface morphology changed from straight to wave along the propagation of the detonation wave in the simulation, which was consistent with the experimental results.

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Section: Algorithm Selectionmentioning

confidence: 99%

“…Nevertheless, the ALE method is invalid when compared to SPH in terms of modeling the jetting process [6].…”

Section: Algorithm Selectionmentioning

confidence: 99%

Section: Algorithm Selectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation of Ti/Al Bimetal Composite Fabricated by Explosive Welding

Liu

et al. 2017

Metals

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Contact framework for total Lagrangian smoothed particle hydrodynamics using an adaptive hybrid kernel scheme

Wiragunarsa,

Zuhal,

Dirgantara

et al. 2024

Numerical Meth Engineering

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Total Lagrangian SPH (TLSPH) offers many advantages that can overcome instability and computational time issues. However, it is not naturally applicable to problems with contact. Many problems in solid dynamics and structural analysis require contact definition. In order to use the total Lagrangian formulation, further development for the contact algorithm is required. This research proposes an algorithm to implement inter‐particle contact in TLSPH using an adaptive hybrid‐kernel scheme for the first time. A combination of the updated and total Lagrangian formulations at the contact surface is introduced, in which the kernel type change automatically when particles from a different body are detected. In kernel change from the updated to the total Lagrangian formulation, the gradient correction cannot be performed using a common correction method because different frames of reference are used. Therefore, a hybrid‐kernel correction technique is proposed to maintain the zeroth‐ and first‐order completeness. Then, the contact force is obtained from the inter‐particle force using the conservation of momentum. The proposed method does not require a user‐defined parameter that makes the application straightforward. Based on the test, the proposed method agrees well with the data available in published literature and the finite element method. Compared with the contact method in classical SPH, the proposed TLSPH shows a significant stability improvement.

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