Accession Number : AD0818301

Title :   NUMERICAL GROUND MOTION STUDIES. VOLUME I. STUDY OF NUMERICAL SOLUTION ERRORS IN ONE- AND TWO-DIMENSIONAL FINITE DIFFERENCE CALCULATIONS OF GROUND MOTION.

Descriptive Note : Technical rept. Feb 66-Apr 67,

Corporate Author : APPLIED THEORY INC SANTA MONICA CA

Personal Author(s) : Trulio, John G. ; Germroth, John J. ; Carr, William E. ; Niles, William J.

Report Date : JUL 1967

Pagination or Media Count : 52

Abstract : Results are presented of a study to determine numerical solution errors in two-dimensional hydrodynamic calculations of surface bursts. The changes in solution errors due to variations in mesh point distribution are studied in one and two dimensions; the results of the investigation are applied to improving the solution to a two-dimensional problem. A method is described which allows a grid to expand automatically to contain a moving shock. Methods are presented for achieving several kinds of mesh point distributions based on a geometric progression in the distance between mesh points. (Author)

Descriptors :   *NUMERICAL ANALYSIS), (*SOIL MECHANICS, (*NUCLEAR EXPLOSIONS, EXPLOSION EFFECTS), ERRORS, TWO DIMENSIONAL FLOW, CONTINUUM MECHANICS, DIFFERENCE EQUATIONS, KINETIC ENERGY, SURFACE BURST, SHOCK WAVES, ONE DIMENSIONAL FLOW, SOILS, MOTION, HYDRODYNAMICS, WAVE PROPAGATION, MECHANICAL WAVES, PROPAGATION.

Subject Categories : Soil Mechanics
      Numerical Mathematics

Distribution Statement : APPROVED FOR PUBLIC RELEASE