Simulation of high velocity impact in fluid-filled containers using finite elements with adaptive coupling to smoothed particle hydrodynamics

2011 ◽  
Vol 38 (6) ◽  
pp. 511-520 ◽  
Author(s):  
M. Sauer
Keyword(s):  
Finite Elements ◽  
Smoothed Particle Hydrodynamics ◽  
High Velocity ◽  
High Velocity Impact ◽  
Velocity Impact ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Adaptive Coupling

scholarly journals Welding Window: Comparison of Deribas’ and Wittman’s Approaches and SPH Simulation Results

Metals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1323 ◽  
Author(s):  
Yulia Yu. Émurlaeva ◽  
Ivan A. Bataev ◽  
Qiang Zhou ◽  
Daria V. Lazurenko ◽  
Ivan V. Ivanov ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
High Velocity ◽  
High Velocity Impact ◽  
Sph Method ◽  
Velocity Impact ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Impact Welding ◽  
Simulation Results ◽  
Sph Simulation

A welding window is one of the key concepts used to select optimal regimes for high-velocity impact welding. In a number of recent studies, the method of smoothed particle hydrodynamics (SPH) was used to find the welding window. In this paper, an attempt is made to compare the results of SPH simulation and classical approaches to find the boundaries of a welding window. The experimental data on the welding of 6061-T6 alloy obtained by Wittman were used to verify the simulation results. Numerical simulation of high-velocity impact accompanied by deformation and heating was carried out by the SPH method in Ansys Autodyn software. To analyze the cooling process, the heat equation was solved using the finite difference method. Numerical simulation reproduced most of the explosion welding phenomena, in particular, the formation of waves, vortices, and jets. The left, right, and lower boundaries found using numerical simulations were in good agreement with those found using Wittman’s and Deribas’s approaches. At the same time, significant differences were found in the position of the upper limit. The results of this study improve understanding of the mechanism of joint formation during high-velocity impact welding.

Examining a modified algorithm of smoothed particle hydrodynamics for a high velocity perforation of an aluminum beam

Meccanica ◽  
2013 ◽  
Vol 48 (7) ◽  
pp. 1623-1636 ◽  
Author(s):  
Vahab Haghighat Namini ◽  
Nima Amanifard ◽  
Aboulfazl Darvizeh ◽  
Katayoon Mohamadi
Keyword(s):  
Smoothed Particle Hydrodynamics ◽  
High Velocity ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Aluminum Beam ◽  
Modified Algorithm

AN IMPLEMENTATION OF THE SMOOTHED PARTICLE HYDRODYNAMICS FOR HYPERVELOCITY IMPACTS AND PENETRATION TO LAYERED COMPOSITES

2013 ◽  
Vol 10 (03) ◽  
pp. 1350056 ◽  
Author(s):  
G. R. LIU ◽  
C. E. ZHOU ◽  
G. Y. WANG
Keyword(s):  
Smoothed Particle Hydrodynamics ◽  
High Velocity ◽  
Numerical Solutions ◽  
Equations Of State ◽  
Damage Model ◽  
High Rate ◽  
Material Strength ◽  
Layered Composites ◽  
Particle Hydrodynamics ◽  
Smoothed Particle

Driven by applications in the design of protective structure systems, the need to model high velocity impact is becoming of great importance. This paper presents a Smoothed Particle Hydrodynamics (SPH) procedure for 3D simulation of high velocity impacts where high rate hydrodynamics and material strength are of great concern. The formulations and implementations of the Johnson–Cook strength and damage model considering temperature effect, and Mie–Gruneison and Tilloton equations of state are discussed. The performance of the procedure is demonstrated through two example analyses, one modeling a cubic tungsten projectile penetrating a multi-layered target panel and the other involving a sphere perforating a thin plate. The results obtained, with comparisons made to both experimental results and other numerical solutions previously reported, show that our SPH-3D implementation is accurate and reliable for modeling the overall behavior of the high rate hydrodynamics with material strength.

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