Accession Number : AD0683781

Title :   FORMAT II - SECOND VERSION OF FORTRAN MATRIX ABSTRACTION TECHNIQUE. VOLUME II, SUPPLEMENT I. DESCRIPTION OF DIGITAL COMPUTER PROGRAM.

Descriptive Note : Final rept. Jan 67-Jun 68,

Corporate Author : MCDONNELL DOUGLAS CORP LONG BEACH CALIF DOUGLAS AIRCRAFT DIV

Personal Author(s) : Lackey,W. J. ; Wild,R. E.

Report Date : DEC 1968

Pagination or Media Count : 76

Abstract : Programmer oriented documentation for a large-order eigensolution capability in FORMAT is presented. This capability provides for extraction of a specified number of eigenvalues and eigenvectors from a real matrix of order 2000 or less and was designed primarily for stability analysis of complex structures. The approach is based on the method of Eredelyi and may be classified as a variation of the power method. This capability is an optional addition to the matrix abstraction capability of FORMAT. (Author)

Descriptors :   (*AIRFRAMES, STRUCTURAL PROPERTIES), (*STRUCTURAL PROPERTIES, COMPUTER PROGRAMMING), (*MATRICES(MATHEMATICS), COMPUTER PROGRAMMING), STABILITY, ALGORITHMS, SUBROUTINES

Subject Categories : Aircraft
      Computer Programming and Software
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE