help Rec13
  ABAQUS section force and moment output to MATLAB
  
  Syntax
      #Rec# = Fil2str('*.fil');
      #out# = Rec13(#Rec#)
 
  Description
      Read section force output from the results (*.fil) file generated
      from the ABAQUS finite element software. The asterisk (*) is replaced
      by the name of the results file. The record key for section force
      output is 13. See section "Results file output format" in ABAQUS
      Analysis User's manual for more details.
      The following options with parameters have to be specified in the
      ABAQUS input file for the results (*.fil) file to be created and to
      contain section force results:
          ...
          *FILE FORMAT, ASCII
          *EL FILE
          SF
          ...
      NOTE: The results file (*.fil) must be placed in the same directory
      with the MATLAB source files in order to be processed.
      
  Input parameters
      #Rec# (string) is an one-row string containing the ASCII code of the
          ABAQUS results (*.fil) file. It is generated by the function
          Fil2str.m.
  
  Output parameters
      #out# ([#n# x #m#]) is a double array containing the attributes of
          the record key 13 as follows:
          Column  1  –  First section force.
          Column  2  –  Second section force.
          Column  3  –  Etc. (See “Elements” in Abaqus Analysis User's
          Manual for a description of which section forces are available
          for each beam or shell element type).
          where #n# is the number of elements multiplied by the number of
          integration points multiplied by the number of increments, and
          #m# is the number of section force components of each element. If
          the results file does not contain the desired output, #out# will
          be an empty array
 
  _________________________________________________________________________
  Copyright (c) 2016
      George Papazafeiropoulos
      Captain, Infrastructure Engineer, Hellenic Air Force
      Civil Engineer, M.Sc., Ph.D. candidate, NTUA
      Email: gpapazafeiropoulos@yahoo.gr
      Website: http://users.ntua.gr/gpapazaf/