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Ballistics, 2nd Edition
book

Ballistics, 2nd Edition

by Donald E. Carlucci, Sidney S. Jacobson
August 2013
Intermediate to advanced content levelIntermediate to advanced
608 pages
21h 36m
English
CRC Press
Content preview from Ballistics, 2nd Edition
449Shock Physics
So the time it takes the rarefaction to reach the front face is
t
U
==
=
1
1
8 359
0 120
[]
.
.[
]
mm
mm
s
s
µ
µ
(16.116)
Then, the total time for the shock pulse is the time between impact and the rarefaction
wave reaching the interface or
t
shock
sss=+=0 155 0 120 0 275.[]. [] .[]µµµ
(16.117)
To determine the velocity at which the magnesium plate will rebound, let us look at
Figure 16.18.
We have the densities of both materials, we have the longitudinal sound speeds, we have
u
2f
, so we can nd u
3f
by solving the following equations simultaneously:
ρρ
0
3
32
30 2
0
Mg Mg Mg Mg f
L
ff
L3f
c
p
uu
pc
uu
=
→=
()
(16.118)
ρρ
0
3
3
30
0
0
Mg Bras
sB
rass Brass
L
f
L3
f
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Publisher Resources

ISBN: 9781466564374