SCAP - a Shaped Charge Analysis Program: user's manual for SCAP 1. 0 Page: 7 of 84
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SCAP (Shaped Charge Analysis Program) is an interactive modeling code
developed at Sandia National Laboratories for the purpose of assisting in the
design of shaped charge components. Design requirements for Sandia applications
need not correspond to typical conventional weapon shaped charge requirements.
Miniaturized components, specialized materials and non-standard designs open
the way for possible unique modeling requirements. The need for an in-house
Sandia code with maximum modeling flexibility and ease of use has lead to the
development of SCAP.
SCAP is user friendly and very inexpensive to run. It is designed for flexibility
in shaped charge device configuration, choice of competing modeling techniques,
and implementation of new models for various parts of shaped charge jet for-
mation and penetration phenomena. The code at present contains models for
liner acceleration, jet formation, jet stretching and breakup, jet penetration and
confinement motion. Different models are available for some portions of the code
and may be chosen via a menu format. Few a priori assumptions are built into
the code with the intent that the program structure should allow the modeling
of devices of nonstandard design. For example, derivatives needed in the analysis
are computed via interpolation rather than from formulas based on geometric as-
sumptions. The result is a code which is conceptually simple and well structured.
SCAP is written in FORTRAN 77 and is currently run on VAX systems
at Sandia. The code produces both hardcopy output listings and plotted out-
put. Plotting portions of the code allow creation of a movie of the jet forma-
tion process and utilize the high-level plotting package, DISSPLA, a proprietary
product of Integrated Software Systems Corporation of San Diego, California.
DISSPLA is coupled to the Sandia Virtual Device Interface (SVDI) system which
allows use of the same code on any supported plotting device. Thus, any Sandia
supported black and white or color plotting device may be used with SCAP. The
code is most convenient to run on dual alphanumeric and graphics terminals.
The code also accesses an ordinary differential equation solver in the Sandia
SLATEC mathematical subroutine library. Sandia personnel may obtain infor-
mation and/or assistance relative to DISSPLA, SVDI and the SLATEC library
from the Computer Consulting and Training Division (2614). However, the SCAP
user need not be familiar with the details of these systems. The user must only
obtain the appropriate SVDI device codes for his particular plotting output
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Robinson, A.C. SCAP - a Shaped Charge Analysis Program: user's manual for SCAP 1. 0, report, April 1, 1985; Albuquerque, New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc1100921/m1/7/: accessed March 21, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.