Accession Number : AD0683261


Title :   FORMAT - FORTRAN MATRIX ABSTRACTION TECHNIQUE. VOLUME V. ENGINEERING USER AND TECHNICAL REPORT.


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


Corporate Author : DOUGLAS AIRCRAFT CO INC LONG BEACH CALIF AIRCRAFT DIV


Personal Author(s) : Pickard,J


Report Date : Dec 1968


Pagination or Media Count : 696


Abstract : FORMAT (Fortran Matrix Abstraction Technique) is a digital computer program system consisting of three distinct programs written entirely in Fortran IV. The system provides for generation, manipulating, printing, and plotting of large order (i.e., 2000) matrices commonly used in state-of-the-art structural analyses. Phase I of the system automatically generates matrices required in the thermomechanical analysis of structures by the Force or Displacement Methods including those necessary in joining, symmetric/antisymmetric r reaction disconnect, vibration, and stability analyses. Modules for converting continuous-to-discrete loads, and analytic-to-discrete geometry and for maintenance of a master case data file are also provided to minimize input data requirements. Phase II provides an abstraction capability to effect basic matrix algebra via the standard matrix operations (e.g., add, multiply, etc.), and several control operations (e.g., save and print matrices, etc.). The sequence of operations is user designated. Phase III provides for self-explanatory report form printing of matrix data resulting from Force or Displacement Method analyses, and a nominal graphical display capability for matrix and geometry data. (Author)


Descriptors :   *AIRFRAMES , COMPUTER PROGRAMMING , STRUCTURAL PROPERTIES , MATRICES(MATHEMATICS) , BENDING , LOADS(FORCES) , AIRCRAFT PANELS , STRESSES


Subject Categories : Aircraft
      Computer Programming and Software
      Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE