DEVIATORIC EFFECTS IN HIGH INTENSITY STRESS WAVES.

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Abstract:

The governing equations for dynamic cavity expansion are developed for continua which can be characterized as compressible elasto-plastic, and kinematic hardened. A numerical procedure for integrating these governing equations, utilizing shock-fitting as opposed to artificial viscosity for numerical stability, is outlined. The shockfitting, as well as the starting procedure, is based on a progressive wave solution of an adjunct problem which is asymptotic to the formulated problem. Continua theory of dynamic cavity expansion, as formulated here, indicates that the hydrostatic component of the stress state decreases much more rapidly than a decreasing cavity pressure as long as the cavity is expanding. The capability of a continuum to transmit radial compressive force is due to a rapidly increasing deviatoric stress. Author

Author(s):
Mcdowell, E. L.
Author Organization(s):
IIT RESEARCH INST CHICAGO ILL
Descriptive Note:
Technical rept. for 19 Mar 63-20 Nov 64,
Annotation:
Deviatoric effects in high intensity stress waves.
Pagination:
0076

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFWL-TR-65-15
Contract/Grant Number(s):
AF29 601 5008
Task Number(s):
13144
Project Number(s):
AF-5710
Monitor Series:
TR-65-15
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*SOLID STATE PHYSICS, SHOCK WAVES), (*SHOCK WAVES, SOLID STATE PHYSICS), (*MECHANICS, SHOCK WAVES), SPHERES, CONTINUUM MECHANICS, ELASTIC PROPERTIES, PLASTIC PROPERTIES, STRESSES, DEFORMATION, HYDROSTATICS, SOLIDS
Report Date:
1965 Aug 01