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CHARACTERISTIC EMISSIONS FROM AN UNDERGROUND EXPLOSION COMPUTATION TECHNIQUE AND RESULTS,
ENGINEERING-PHYSICS CO ROCKVILLE MD
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The basic equations which describe the propagation of intense mechanical disturbances through geologic media are discussed. Several techniques are described for implementing the numerical solution of the equations of wave propagation applicable to both the region of linear and nonlinear constitutive behavior and a computer program was written, using a numerical technique which allows one to solve the wave propagation problem for a medium having an equation of state which loads and unloads along different state point loci. Solutions obtained from several test cases are illustrated in graphical form. The computer program is currently being embellished to include the explosive wave generation mechanism as well as the wave shape histories. Author
APPROVED FOR PUBLIC RELEASE