!*****************************************************************************************************!
! TITLE: CFVR7905 - CTE DB SE-A test: Lateral buckling.
! SUBTITLE: Lateral buckling checking according to CTE DB SE-A.
!
! DESCRIPTION: A pinned-pinned steel beam subjected to a surface load of 80 KN/m (*1.5 safety factor).
! DESCRIPTION:
! DESCRIPTION: The beam has a length of 1m.
! DESCRIPTION:
! DESCRIPTION: The cross section is a IPE 400.
! DESCRIPTION:
! DESCRIPTION: The beam is made of Fe 360 steel.
! DESCRIPTION:
! DESCRIPTION:
! DESCRIPTION: The aim of the example is to obtain the lateral buckling
! DESCRIPTION: criterion according to CTE DB SE-A.
!
! ELEMENT TYPE: BEAM3
! MODULES:
! UNITS: User
! KEYWORD1: Beam
! KEYWORD2: Cross Section
! KEYWORD3: Steel
! KEYWORD4: Code Checking/Design
! KEYWORD5: CTE
!
!*************************************************************************************!
   FINISH
  ~CFCLEAR,,1
   NomFile='CFVR7905'
  /TITLE, %NomFile%,  CTE DB SE-A test: Lateral buckling

! ---------------------------------------------------------------------------------
! Model definition and solve
! ---------------------------------------------------------------------------------
! CivilFEM SETUP
  ~UNITS,,LENG,M
  ~UNITS,,TIME,S
  ~UNITS,,FORC,KN
  ~CODESEL,CTESEA,EC2,,,EC8-94

/PREP7
! Materiales
  ~CFMP,1,LIB,STEEL,EC3,Fe 360  ! Fe 360

! Element types
  ET,1,Beam3 ! Element Type 1: 2D Beam

! Cross sections
 ~SSECLIB,1,1,1,15   ! IPE 450

! Member properties
 ~MEMBPRO,1,CTESEA,ALL,6,1,1,1,1,1,1,0.8,0,1,1,0

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

! Nodes
  N,1
  N,7,6
  FILL,1,7
! Elements
  E,1,2
  EGEN,6,1,1,1
! Boundary conditions
  D,1,,,,,,UX,UY
  D,7,,,,,,UY
! Plot
  /ESHAPE,1
  EPLOT

  /SOLU
  P=80*1.5 ! 80 kN/m uniform distributed load
  SFBEAM,ALL,1,PRES,P
  SOLVE

/POST1
! Postprocessor
  ~CFSET,,1,1       ! Read the first load step
! Plot bending moment MZ
  ~PLLSFOR,M,Z,-1
! Check for lateral bending
  ~CHKSTL,BUCK_BND,-Z,FULL

!--------------------------------------------------------------------------------------
! DATA CHECK
!--------------------------------------------------------------------------------------
! Data comparison number
  NComp = 3
  NComp_ch =  0

! Marix 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) = 'MED'
  LABEL(2,1) = 'MBRD'
  LABEL(3,1) = 'CRT_TOT'

! Correct values
!--------------------------------------------------------------------------------------
  VALUE(1,1)= -540
  VALUE(2,1)= 338.84
  VALUE(3,1)= 1.59

! Obtained values
!--------------------------------------------------------------------------------------
 ~CFGET,VALUE( 1,2),ELEMENT,3,RESULT,MED,J
 ~CFGET,VALUE( 2,2),ELEMENT,3,RESULT,MBRD,J
 ~CFGET,VALUE( 3,2),ELEMENT,3,RESULT,CRT_TOT,J

! Warning and error tolerances
  TOLER( 1, 1)= 1E-4   $   TOLER( 1, 2)= 1E-4
  TOLER( 2, 1)= 1E-1   $   TOLER( 2, 2)= 1E-1
  TOLER( 3, 1)= 1E-2   $   TOLER( 3, 2)= 1E-2

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