feap Beispiel Stab
  0 0 0 2 2 2

parameter
n = 4         ! # der Elemente
m = n+1       ! # der Knoten
E = 210000    ! E-Modul in N/mm^2 | MPa
A = 100       ! Querschnittsflaeche in mm^2 
L = 100       ! Laenge in mm
P = 20000     ! Kraft in N

coord
  1 1    0    0	
  m 0    L    0

elem
 1 1 1 1   2
 n 0 1 m-1 m

mate 1
  truss
    elastic isotropic  E
    cross section A

!eboun
!  1 0 1 1
!  1 L 0 1

!eforce
!  1 L P 0
  
! Alternative Eingabe RB

boun
  1 0 1 1
  m 0 0 1

force
  m 0 P 0

end

batch       !solver
  tangent
  form
  solve
  disp,all
  stre,all
  reac,all
end

batch       !postprocess
  plot post
  plot axis
  plot load
  plot mesh
  plot boun
  plot cont 1
  plot post
end

inter
stop