Accession Number : AD0821654

Title :   HAND SOLUTION OF ONE-DIMENSIONAL INELASTIC WAVE-PROPAGATION PROBLEMS.

Descriptive Note : Technical rept. 30 Jan-18 Apr 67,

Corporate Author : NEW MEXICO UNIV ALBUQUERQUE ERIC H WANG CIVIL ENGINEERING RESEARCH FACILITY

Personal Author(s) : Abbott, Phillip A.

Report Date : OCT 1967

Pagination or Media Count : 56

Abstract : A method for obtaining a numerical solution to a wide variety of one-dimensional inelastic wave-propagation problems is discussed. The emphasis is on solutions to problems involving air-induced propagation in soil or rock resulting from a nuclear detonation under superseismic conditions. Emphasis is also placed on hand solutions obtained using a desk calculator and drafting instruments. The method is quite versatile in that it allows any pressure or kinematic condition at a boundary, any nonlinear and hysteretic material stress-strain curves, and any layering of different materials. The principal limitations of the method are that it does not treat viscoelastic material behavior, problems involving more than one-dimensional behavior, and problems in which strains and particle velocities are not relatively small. Two example problems are included: one shows the formation of a shock in a homogeneous medium, and the other shows wave propagation through a layered medium. (Author)

Descriptors :   *MECHANICAL WAVES), (*NUMERICAL METHODS AND PROCEDURES, SEISMIC WAVES, STRESSES, SHOCK WAVES, DETONATIONS, COMPATIBILITY, VELOCITY, DENSITY, EQUATIONS OF MOTION, PROPAGATION, SOILS, KINEMATICS, ROCK, STRAIN(MECHANICS), VISCOELASTICITY, INSTRUMENTATION.

Subject Categories : Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE