SimplySupported beam with UDL

[SandeepNagaraj]

Dear Professor,

Iv constructed an input file for a simply supported beam with a udl. Iv incorporated the shell elements for modelling. The plot seems to be correct. However, my results don't match with that of hand calculations. I suspect the loading fault. Kindly help me with this issue. It would be really helpful.


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FEAP * * SimplySupported beam with UDL(Shell Element)
0 0 0 3 6 4                  ! 3dmesh,6dof/Node,4Node/Element

PARA
 l = 1000                     ! Length of the beam
 b = 100         ! Breadth of the beam   
 hd = 15                   ! No. of elements - Horizontal direction
 vd = 3                     ! No. of elements - Vertical direction 

BLOC 1
 CART hd vd
  QUAD 4
   1 0 0
   2 l 0
   3 l b
   4 0 b
 
BOUN                       
  1  0 1 1 0 0 0 0          ! Node1 - Ux,Uy,Rx,Ry contrained
  16 0 0 1 0 0 0 0         ! Node16- Uy,Rx,Ry contrained
 
eforc
  2  100.0 0 -5000 0 0 0 0  ! udl of 120 N/m converted to pressure
 
MATE 1
 SHEL
 ELAS ISOT 200000.0 0.25
 THIC,,24                   ! Shell thickness
 
END

INTE

STOP
*************************************************

Thank you!!

Sandeep N.

[Prof. R.L. Taylor]

Uniform loading is an element load, not a force type.  You need to understand more about how finite element models are built.  We can help with problems related to possible errors and getting you started with the program, however, we cannot serve as a tutorial service continually.