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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
469Shock Physics
We can then write Equation 16.206 as
σ
net
|[()()]()
xl
Ef lctglctEfct
=
=
−+
+=
21
(16.214)
Thus at a rigid boundary, the stress is doubled while the displacement and particle veloci-
ties are zero.
These equations allow us to visualize wave interactions with xed or free ends as fol-
lows. When a tensile wave encounters a free boundary, it is reected as a compressive
wave. If we have a free surface, we can imagine a phantom pulse coming in from outside
the bar as depicted in Figure 16.27. With a xed boundary, the imagined pulse is in the
same sense as the incident pulse as depicted in Figure 16.28.
u,v
c
L
Free surface
u,v
Free surface ...
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Publisher Resources

ISBN: 9781466564374