Accession Number : AD0770618

Title :   SOLVEDG, An Out-of-Core System Solver for Large Order Positive Definite Systems of Linear Equations,

Corporate Author : NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD

Personal Author(s) : Gignac,Donald A.

Report Date : AUG 1973

Pagination or Media Count : 36

Abstract : In the finite element approach to static structural analysis, the solution of the equation KU = P a positive definite system of simultaneous linear equations is basic. However, the order of K is often so large that, when advantage is taken of K's symmetry and banded structure, it is not feasible or sometimes even possible to store K in the core memory of a computer. SOLVEDG is an out-of-core system solver for KU = P suggested by Cantin's IBM 360 program SOLVE. SETUP is a preprocessor program for SOLVEDG which stores the matrices K and P in Random Access Files. SOLVEDG and SETUP are written in FORTRAN Extended for the CDC 6700 (6400/6600). The report also contains an original proof justifying the basic algorithm of SOLVEDG. (Author)

Descriptors :   *Ships, *Structural properties, *Computer applications, Computer programs, Algorithms, FORTRAN, Computations, Matrices(Mathematics)

Subject Categories : Computer Programming and Software
      Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE