Multidimensional shock waves and surface waves

Author(s):  
Sylvie Benzoni-Gavage ◽  
Jean-François Coulombel
Keyword(s):  
2004 ◽  
Author(s):  
Lin Wu

We theoretically and numerically study the propagation of axisymmetrical long surface waves of an ultra thin liquid film on a rotating disk. When breaking condition is satisfied, shock waves form and propagate driven by the centrifugal and external shearing forces. The disjoining pressure due to van der Waals force provides diffusion to the system. The surface waves are planarized by the centrifugal force, external shearing force and the disjoining pressure.


Author(s):  
M.A. Mogilevsky ◽  
L.S. Bushnev

Single crystals of Al were loaded by 15 to 40 GPa shock waves at 77 K with a pulse duration of 1.0 to 0.5 μs and a residual deformation of ∼1%. The analysis of deformation structure peculiarities allows the deformation history to be re-established.After a 20 to 40 GPa loading the dislocation density in the recovered samples was about 1010 cm-2. By measuring the thickness of the 40 GPa shock front in Al, a plastic deformation velocity of 1.07 x 108 s-1 is obtained, from where the moving dislocation density at the front is 7 x 1010 cm-2. A very small part of dislocations moves during the whole time of compression, i.e. a total dislocation density at the front must be in excess of this value by one or two orders. Consequently, due to extremely high stresses, at the front there exists a very unstable structure which is rearranged later with a noticeable decrease in dislocation density.


1998 ◽  
Vol 08 (PR7) ◽  
pp. Pr7-317-Pr7-326 ◽  
Author(s):  
O. A. Ivanov ◽  
A. M. Gorbachev ◽  
V. A. Koldanov ◽  
A. L. Kolisko ◽  
A. L. Vikharev

2006 ◽  
Vol 134 ◽  
pp. 237-241
Author(s):  
J. L. Dequiedt
Keyword(s):  

1970 ◽  
Vol 102 (11) ◽  
pp. 431-462 ◽  
Author(s):  
L.M. Biberman ◽  
A.Kh. Mnatsakanyan ◽  
I.T. Yakubov

1960 ◽  
Vol 72 (9) ◽  
pp. 33-52 ◽  
Author(s):  
R.V. Polovin
Keyword(s):  

1997 ◽  
Vol 167 (7) ◽  
pp. 735-750 ◽  
Author(s):  
Yurii V. Gulyaev ◽  
Igor E. Dikshtein ◽  
Vladimir G. Shavrov

1989 ◽  
Vol 159 (11) ◽  
pp. 493 ◽  
Author(s):  
N.M. Kuznetsov
Keyword(s):  

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