Element types used in the model: BEAM3

Needed CivilFEM Modules:
Geotechnical Module
Bridges and Civil Non Linearities Module
Advanced Prestressed Concrete Module

   FINISH
   ~CFCLEAR,,1
   NomFile='CFVR1911'
   /TITLE, %NomFile%, British Standard 5950: Compression Buckling

! -------------------------------------------------------------------------------------
! Initial data
! -------------------------------------------------------------------------------------
! CivilFEM Setup: Code & Units
 ~UNITS,,LENG,M
 ~UNITS,,TIME,S
 ~UNITS,,FORC,KN
 ~CODESEL,BS595085

/PREP7
! Preprocessor
! --------------------------------------------------
! Materials
! Mat 1: Grade 43 steel
  ~CFMP,1,LIB,STEEL,BS5950,Gr43
! Element Types
  ET,1,BEAM3 ! Type 1: 2D Beam

! Cross Section
  ~SSECLIB,1,1,20,21   !356x368x129 UC
! Member property
 ~MEMBPRO,1,BS595085,ALL,6.0,1.0,1.0,1.0,1.0,0.0,1.0,1.0,0.0,1
  L        = 6.0
  KLTXY    = 1.0
  KLTXZ    = 1.0
  KCXY     = 1.0
  KCXZ     = 1.0
  CteRob   = 0
  n        = 1
  m        = 1
  DL       = 0
  CFBUCKXY = 1
  CFBUCKXZ = 1
  CHCKAXIS = 1
  ~MEMBPRO,1,BS595085,ALL,L,KLTXY,KLTXZ,KCXY,KCXZ,CteRob,n,m,DL,CFBUCKXY,CFBUCKXZ,CHCKAXIS

! Beam & Shell properties
 ~BMSHPRO,1,BEAM,1,1,,,3,1,0

! Keypoints
  K
  K,2,,6
! Lines
  LSTR,1,2
! Meshing
  ESIZE,0.5,0
 LMESH,1
 FINISH

/SOLU
! Solution
! --------------------------------------------------
! Displacements
  DK,1,UX,,,,UY
  DK,2,UX
! Apply Load
  FK,2,FY,-2500
! Solve
  SOLVE

/POST1
! Postprocessor
! --------------------------------------------------
! Read results
  ~CFSET,,1,1
! BS 5950 Check in Compression buckling
  ~CHKSTL,BUCK_CMP, ,-Z

!--------------------------------------------------------------------------------------
! DATA CHECK
!--------------------------------------------------------------------------------------
! Data comparison number
  NComp = 5
  NComp_ch =  0

! Matrix dim.
  *DIM,LABEL,CHAR,Ncomp,1
  *DIM,LABEL_CH,CHAR,Ncomp_ch,1
  *DIM,VALUE,,Ncomp,3
  *DIM,VALUE_CH,CHAR,Ncomp_ch,3
  *DIM,TOLER,,Ncomp,2

! Labels
  LABEL(1,1) = 'PC'
  LABEL(2,1) = 'LAMBDA'
  LABEL(3,1) = 'LAMBDA0'
  LABEL(4,1) = 'NU'
  LABEL(5,1) = 'CRT_TOT'

! Correct values
  VALUE(1,1)=3105
  VALUE(2,1)=63.909
  VALUE(3,1)=17.476
  VALUE(4,1)=0.25385
  VALUE(5,1)=0.805

! Obtained values
  ! BS 5950 Check in Bending+Shear
    ~CFSET,1      ! Load first alternative
   ~PLLSSTL,PC
   *GET,VALUE(1,2),ELEM,3,ETAB,CFETAB_I
   ~PLLSSTL,LAMBDA
   *GET,VALUE(2,2),ELEM,3,ETAB,CFETAB_I
   ~PLLSSTL,LAMBDA0
   *GET,VALUE(3,2),ELEM,3,ETAB,CFETAB_I
   ~PLLSSTL,PERRYFCT
   *GET,VALUE(4,2),ELEM,3,ETAB,CFETAB_I
   ~PLLSSTL,CRT_TOT
   *GET,VALUE(5,2),ELEM,3,ETAB,CFETAB_I

! Warning and error tolerances
  TOLER( 1,1)= 1E+2 $ TOLER( 1,2)= 1E+2  ! Rounding error accepted
  TOLER( 2,1)= 1E-0 $ TOLER( 2,2)= 1E-0  ! Rounding error accepted
  TOLER( 3,1)= 1E-3 $ TOLER( 3,2)= 1E-3
  TOLER( 4,1)= 1E-3 $ TOLER( 4,2)= 1E-3
  TOLER( 5,1)= 1E-2 $ TOLER( 5,2)= 1E-2  ! Rounding error accepted

!--------------------------------------------------------------------------------------
! Results comparison
!--------------------------------------------------------------------------------------
  COMPARA.MAC