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Cartridge Case Analysis System
Simulate Case Deflections and Chamber Interaction During Firing Pressurization
The modeling and analysis of a cartridge case requires an elastic-plastic, thermal, dynamic solution. The use of general purpose finite element programs for case analysis can be very expensive and labor intensive because the model must contain many elements to obtain stress distributions in the thin cylindrical wall region of the case and in the base region. Additionally, the case material can exceed its yield point for a large part of the interior ballistic cycle, requiring an inelastic analysis with relatively long computation times.
To improve computational and parametric design efficiency, Arrow Tech Associates, Inc. has developed an analytical tool specifically to analyze cartridge cases, called CASAS (CASe Analysis System).
CASAS is a primary analytical tool to perform the elastic-plastic, dynamic analysis (including transient heat effects) required for cartridge case design.
CASAS simulates the dynamic interaction of the cartridge case and gun chamber in five phases of the firing cycle:
CASAS is ideal to perform the following case/chamber parametric studies:
CASAS output includes:
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