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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
474 Ballistics: Theory and Design of Guns and Ammunition
is reected from the free surface with a net maximum tensile stress σ
T
, which will always
occur at the leading edge of the wave (Figure 16.34).
At any time, we can write
σσσ
TmI
=−
(16.228)
where σ
I
is the part of the compression wave remaining at an instant in time. If σ
T
ever
exceeds σ
F
, a fracture will occur. Thus at fracture, we can write
σσσ
FmI
=−
(16.229)
If we assume that this occurs at some instant, we will generate a spall thickness t
1
and we
can write this spall thickness as
σσ
Im
λ
λλ
λ
=
2
1
t
(16.230)
c
c
c
Free surface
c
t =
4
1
c
t
=
2
1
c
t =
t
< 0
t
= 0
σ
T
=
σ
m
σ
T
=
σ
m
c
c
+σ
m
+σ
m
σ
m
2
σ
1
=
+σ
m
σ
m
σ
m
σ
m
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Publisher Resources

ISBN: 9781466564374