scholarly journals Identification of the elastic constant values for numerical simulation of high velocity impact on dyneema® woven fabrics using orthogonal experiments

2018 ◽  
Vol 204 ◽  
pp. 178-191 ◽  
Author(s):  
Zishun Yuan ◽  
Xiaogang Chen ◽  
Haoxian Zeng ◽  
Kaicheng Wang ◽  
Jiawen Qiu
Keyword(s):  
Numerical Simulation ◽  
Elastic Constant ◽  
High Velocity ◽  
Woven Fabrics ◽  
High Velocity Impact ◽  
Velocity Impact ◽  
Orthogonal Experiments

Numerical Simulation of High Velocity Impact of Circular Composite Laminates

2017 ◽  
Vol 18 (2) ◽  
pp. 236-244
Author(s):  
Kyeongsik Woo ◽  
In-Gul Kim ◽  
Jong Heon Kim ◽  
Douglas S. Cairns
Keyword(s):  
Numerical Simulation ◽  
High Velocity ◽  
Composite Laminates ◽  
High Velocity Impact ◽  
Velocity Impact

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.

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