scholarly journals Particle Jetting Induced by the Impulsive Loadings

2017 ◽  
Author(s):  
Kun Xue ◽  
Xiaoliang Shi ◽  
Kaiyuan Du ◽  
Haoran Cui
Keyword(s):  
Impulsive Loadings ◽  
Particle Jetting

Finite, inelastic deformations of clamped shell membranes subjected to impulsive loadings.

AIAA Journal ◽  
1969 ◽  
Vol 7 (2) ◽  
pp. 228-235 ◽  
Author(s):  
CHARLES LINDBERGH ◽  
DONALD E. BOYD
Keyword(s):  
Impulsive Loadings

Convergent Approximations of Problems of Impulsively Loaded Structures

1971 ◽  
Vol 38 (4) ◽  
pp. 852-860 ◽  
Author(s):  
H.-S. Ho
Keyword(s):  
Initial Conditions ◽  
Admissible Solution ◽  
Time Dependent ◽  
Strong Discontinuities ◽  
Simple Mode ◽  
Perfectly Plastic ◽  
Initial Difference ◽  
Impulsive Loadings ◽  
Convergent Solution ◽  
General Time

For a dynamically loaded system made of stable materials, it is found that a dynamically admissible solution, one that satisfies all but the initial conditions, is a definitely convergent solution in time, with geometry changes and discontinuities taken into account. A new and simpler definition for weak and strong discontinuities is proposed. Solutions using simple mode approximations or the more general time-dependent changing mode approximations are described. For rigid, perfectly plastic beams under impulsive loadings, the latter method indeed gives better results, as there are more parameters available to optimize the initial difference energy.

Large-scale spray detonation and related particle jetting instability phenomenon

Shock Waves ◽  
2014 ◽  
Vol 25 (3) ◽  
pp. 239-254 ◽  
Author(s):  
F. Zhang ◽  
R. C. Ripley ◽  
A. Yoshinaka ◽  
C. R. Findlay ◽  
J. Anderson ◽  
...  
Keyword(s):  
Large Scale ◽  
Instability Phenomenon ◽  
Spray Detonation ◽  
Particle Jetting

scholarly journals A numerical study of particle jetting in a dense particle bed driven by an air-blast

2020 ◽  
Vol 32 (9) ◽  
pp. 093301
Author(s):  
Rahul Babu Koneru ◽  
Bertrand Rollin ◽  
Bradford Durant ◽  
Frederick Ouellet ◽  
S. Balachandar
Keyword(s):  
Numerical Study ◽  
Dense Particle ◽  
Air Blast ◽  
Particle Bed ◽  
Particle Jetting

Discrete element modeling of shock-induced particle jetting

2018 ◽  
Vol 32 (12n13) ◽  
pp. 1840049 ◽  
Author(s):  
Kun Xue ◽  
Haoran Cui
Keyword(s):  
Packing Density ◽  
External Surface ◽  
Structural Parameters ◽  
Discrete Element ◽  
Relative Importance ◽  
Two Dimensional ◽  
Discrete Element Modeling ◽  
Impulsive Loads ◽  
Key Events ◽  
Particle Jetting

The dispersal of particle shell or ring by divergent impulsive loads takes the form of coherent particle jets with the dimensions several orders larger than that of constituent grain. Particle-scale simulations based on the discrete element method have been carried out to reveal the evolution of jets in semi-two-dimensional rings before they burst out of the external surface. We identify two key events which substantially change the resulted jetting pattern, specifically, the annihilation of incipient jets and the tip-slipping of jets, which become active in different phases of jet evolution. Parametric investigations have been done to assess the correlations between the jetting pattern and a variety of structural parameters. Overpressure, the internal and outer diameters of ring as well as the packing density are found to have effects on the jet evolution with different relative importance.

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