Accession Number : AD0763812
Title : Format-FORTRAN Matrix Abstraction Technique. Volume V-Supplement 2. Engineering User and Technical Report-Extended.
Descriptive Note : Final rept. 1 May 71-30 Apr 73,
Corporate Author : DOUGLAS AIRCRAFT CO LONG BEACH CALIF
Personal Author(s) : Pickard,J.
Report Date : APR 1973
Pagination or Media Count : 140
Abstract : RAL ANALYSIS, DEGREES OF FREEDOMThe FORMAT System has been augmented with highly efficient and reliable procedures for structural analysis via an alternate solution approach which combines the rigorous generation features of the existing force method with a new equation solving process characteristic of current displacement methods. As a result, a tenfold increase in potential problem size to in excess of 10,000 elastic degrees of freedom is the minimum currently anticipated as attainable on present major digital computers, and linear behavioral characteristics can take immediate advantage of any advance in hardware capabilities. In making these provisions considerable emphasis was placed on the control of physical and numerical error throughout the total solution process. To date an extensive range of complex configurations representing actual aerospace structures with up to 6500 degrees of freedom have been successfully processed as single entities on a production basis, that is, within the confines of a production schedule and with maximum reliability at minimum cost. (Modified author abstract)
Descriptors : (*STRUCTURAL PROPERTIES, COMPUTER PROGRAMMING), (*AIRFRAMES, STRUCTURAL PROPERTIES), MATRICES(MATHEMATICS), STRESSES, LOADS(FORCES), COMPUTER PROGRAMS, INSTRUCTION MANUALS
Subject Categories : AIRCRAFT
COMPUTER PROGRAMMING AND SOFTWARE
Distribution Statement : APPROVED FOR PUBLIC RELEASE