Accession Number : AD0484830

Title :   CALCULATION OF UNDERGROUND AND SURFACE EXPLOSIONS.

Descriptive Note : Technical rept. 27 Apr 64-2 Aug 65,

Corporate Author : PHYSICS INTERNATIONAL CO SAN LEANDRO CA

Personal Author(s) : Godfrey, Charles S. ; Andrews, Dudley J. ; Teatum, Eugene T. ; Trigg, Ernest T.

Report Date : JUN 1966

Pagination or Media Count : 120

Abstract : A calculational program is described which has been directed toward prediction of shock strength and ground motion resulting from chemical or nuclear explosions contained in or on the surface of geologic materials. Two-dimensional time-dependent computer codes have been developed that can be applied in the high-pressure region near the explosive source where violent distortion develops, as well as in lower pressure regions where material strength is important. Equations of state have been used that take into account the irreversible compaction of porous materials and also the contribution of internal friction to shear strength. Calculations are reported of TNT explosions at the surface of limestone and buried in a layered soil. (Author)

Descriptors :   (*EXPLOSIONS, MATHEMATICAL MODELS), TERMINAL BALLISTICS, UNDERGROUND EXPLOSIONS, SURFACE BURST, PROPAGATION, SHOCK WAVES, MATHEMATICAL PREDICTION, EQUATIONS OF STATE, EQUATIONS OF MOTION, MECHANICAL WAVES, ELASTIC PROPERTIES, PLASTIC PROPERTIES, NUCLEAR EXPLOSIONS, TNT, POROUS MATERIALS, LIMESTONE, SHEAR STRESSES, PROGRAMMING LANGUAGES, CODING.

Subject Categories : Numerical Mathematics
      Computer Programming and Software
      Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE