DATE     94/01/10

    Procédure ANLIMTRE                         See also :SIMP 
    ---------------

    IENT1 = ALIMTRE TAB1 ;

                         TAB1.'MESH' .'PBLOQ' .'PSOLL' .'VSOLL'
                             .'CONLIM' .'REACMAX'

    Description :
    _____________

    This procedure performs a limit analysis for articulated
    bar networks by means of the Simplex method.


    Contents :
    __________

  Given a network of articulated bars composing the MESH mesh which
  is restrained in displacement on the set of points PBLOQ, we intend
  to find the maximum of the load located at the PSOLL point in 
  the direction VSOLL, considering that the stress EFFX in each 
  bar is subjected to the stress |EFFX| <EG CONLIM.


    IENT1  : generated index (ENTIER type), which equals 0 in the
             event of valid running


    TAB1   : TABLE type object

                 On input, TAB1 must contain :

         index        pointed type         comments
                         object

       MESH             MAILLAGE       mesh

       PBLOQ            MAILLAGE       set of points restrained in
                                       displacement
       PSOLL            POINT          loaded point

       VSOLL            POINT          load direction 

       CONLIM           FLOTTANT       value of the limit stress

       REACMAX          FLOTTANT       value of the limit
                                       supporting reaction
  
                 On output, TAB1 contains :

        index         pointed type         comments
                         object

       CHARLIM          FLOTTANT       limit load

       MCHPV            MCHAML         internal parameters

       CHPPB            CHPOINT        restraints

       CHPPS            CHPOINT        loadings