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Concentrated load (cload.f)

This subroutine is used for user-defined concentrated load, characterized by the parameter USER on the *CLOAD card. The header and variable description is as follows:

      subroutine cload(xload,kstep,kinc,time,node,idof,coords,vold,
     &  mi,ntrans,trab,inotr,veold,nmethod,nactdof,bcont,fn)
!
!     user subroutine cload
!
!
!     INPUT:
!
!     kstep              step number
!     kinc               increment number
!     time(1)            current step time
!     time(2)            current total time
!     node               node number
!     idof               degree of freedom
!     coords(1..3)       global coordinates of the node
!     vold(0..mi(2)
!              ,1..nk)   solution field in all nodes
!                        0: temperature
!                        1: displacement in global x-direction
!                        2: displacement in global y-direction
!                        3: displacement in global z-direction
!                        4: static pressure
!     mi(1)              max # of integration points per element (max
!                        over all elements)
!     mi(2)              max degree of freedomm per node (max over all
!                        nodes) in fields like v(0:mi(2))...
!     veold(0..3,1..nk)  derivative of the solution field w.r.t.
!                        time in all nodes
!                        0: temperature rate
!                        1: velocity in global x-direction
!                        2: velocity in global y-direction
!                        3: velocity in global z-direction
!     ntrans             number of transform definitions
!     trab(1..6,i)       coordinates of two points defining transform i
!     trab(7,i)          -1: cylindrical transformation
!                         1: rectangular transformation 
!     inotr(1,j)         transformation number applied to node j
!     inotr(2,j)         a SPC in a node j in which a transformation
!                        applied corresponds to a MPC. inotr(2,j) 
!                        contains the number of a new node generated
!                        for the inhomogeneous part of the MPC
!     nmethod            kind of procedure
!                       -1: visco
!                        0: no analysis
!                        1: static
!                        2: frequency
!                        3: buckling
!                        4: modal dynamic
!                        5: modal steady state dynamics
!                        6: matrix storage
!     nactdof(i,j)       number of the degree of freedom in the global
!                        system of equations of local degree of freedom
!                        i (0<=i<=mi(2)) in node j; this field is only
!                        accessible for nmethod=4, else a segmentation
!                        fault may result
!     bcont(i)           contact force in global degree of freedom i:
!                        this option is only available for modal dynamic
!                        calculations (nmethod=4). In all other cases use
!                        of this field may lead to a segmentation fault
!     fn(0..mi(2)
!              ,1..nk)   reaction force in all nodes
!                        0: concentrated reaction flux
!                        1: reaction force in global x-direction
!                        2: reaction force in global y-direction
!                        3: reaction force in global z-direction
!                        this option is only available for modal dynamic
!                        calculations (nmethod=4). In all other cases use
!                        of this field may lead to a segmentation fault
!             
!
!     OUTPUT:
!
!     xload              concentrated load in direction idof of node
!                        "node" (global coordinates)
!



guido dhondt 2012-10-06