SOC73, a one-dimensional wave propagation code for rock media

Schatz, J.F.

doi:10.2172/4241703

Cited by 9 publications

(7 citation statements)

References 5 publications

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“…3 This r e l a t i o n s h i p enables t h e code u s e r t o s e l e c t t h e shock width IV, u s u a l l y taken t o be about f i v e zone s i z e s . The input width i s then converted t o L = 1V/50 i n t e r n a l l y .…”

Section: Artificial Viscosity Stab1 Lity Energy a R T I F I C I A mentioning

confidence: 91%

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Rock modeling in TENSOR74, a two-dimensional Lagrangian shock propagation code

Burton¹,

Schatz²

1975

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Section: Artificial Viscosity Stab1 Lity Energy a R T I F I C I A mentioning

confidence: 91%

“…General discussion of the phi losophy of c o n s t i t u t i v e modeling used i n both TENSOR74 and SOC73 may be found i n Ref. 3.…”

Section: Introduction Tensor74 I S a Major Modification Of The Tensormentioning

confidence: 99%

Rock modeling in TENSOR74, a two-dimensional Lagrangian shock propagation code

Burton¹,

Schatz²

1975

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“…Empirically this happens at damage levels of lO"^ to 10"2. [80,78] Principal System While shear failure is formulated in terms of stress tensor invarieoits, tensile failure takes place with respect to the coordinate system of either the principal stresses or the principal void strains and consequently is formulated in terms of components in one of these systems. For small damage levels, (e" < *oT^ ^^^ material is said to be in the nucleation and growtht•••J phase in which the sites of failure are local and the material has no global memory of the orientation of past failure.…”

Section: Tensile Failurementioning

confidence: 99%

Physics and numerics of the tensor code (incomplete preliminary documentation)

Burton¹,

Lettis²,

Bryan³

et al. 1982

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“…More recent descriptions of one-and two-dimensional codes used for underground explosion calculations at the Lawrence Livermore Laboratory are given by Schatz (1973Schatz ( , 1974 and by Burton and Schatz (1975) …”

Section: Computer Calculations Of Underground Explosionsmentioning

confidence: 99%

“…Equations (20) and (23) In SOC73 (Schatz 1974), it is assumed that the shear stresses do not affect the volumetric response of a material to changes in hydrostatic pressure, although it is known that this assumption is not correct. Shear stresses can enhance the compaction of a porous material under increasing hydrostatic loading.…”

Section: Computer Calculations Of Underground Explosionsmentioning

confidence: 99%

Inelastic Processes in Seismic Wave Generation by Underground Explosions

Rodean

1981

Identification of Seismic Sources — Earthquake or Underground Explosion

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There are similarities and differences between chemical and nuclear explosions underground. Host of the differences are in the early stages of the explosions. The later stages are similar with respect to seismic wave generation. Three sources of seismic waves from explosions are coincident in space and time, or nearly so: the explosion itself, explosion-induced tectonic strain release, and (probably) spall-closure following explosion-produced spall. Cavity collapse and explosion-induced aftershocks are two sources of delayed seismic signals. Theories, computer calcula tions, and measurements of spherical stress waves from explosions are described and compared, with emphasis on the transition from inelastic to almost-elastic relations between stress and strain. Two aspects of nonspherical explosion geometry are considered: tectonic strain release and surface spall. Tectonic strain release affects the generation of surface waves; spall closure may also. The forward problem in seismology can, in principle, be solved by calculations beginning with explosive detonation and ending with the synthetic seismogram. The inverse problem can also, in principle, be solved by inverting observed seismic data to obtain an "equivalent elastic source," but the solution cannot extend backward in space and time into the nonlinear inelastic processes of the explosion. The reduced-displacement potential is a common solution (the "equivalent elastic source") of the forward and inverse problems, assuming a spherical source. Measured reduceddisplacement potentials are compared with potentials calculated as solutions of the direct and inverse problems; there are signifi cant differences between the results of the two types of calcula tions and between calculations and measurements. The simple

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SOC73, a one-dimensional wave propagation code for rock media

Cited by 9 publications

References 5 publications

Rock modeling in TENSOR74, a two-dimensional Lagrangian shock propagation code

Rock modeling in TENSOR74, a two-dimensional Lagrangian shock propagation code

Physics and numerics of the tensor code (incomplete preliminary documentation)

Inelastic Processes in Seismic Wave Generation by Underground Explosions

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