CFVR1003 - Eurocode 3 1992 test: Tension and Compression

Tension and compresion checking according to CTE DB SE-A

An estructure of 2 bars is subjected to a Fy load of -300 KN.
The bars have a length of 1m and 5.01 m respectively.
The cross section is a IPE 200.
The bars are made of Fe 430 steel which have a fy of 275E3 kN/m².
The aim of the example is to obtain the cross section classification, the tension and compression criterion according to Eurocode 3 1992.

Element types used in the model: LINK1

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

The example can be launched on an educational license.

KEYWORDS

Cross Section

Steel

Code Checking/Design

Eurocode 3

Model Statistics
Number of elements	2
Number of nodes	3
Number of civil materials	1
Number of cross sections	1
Number of shell vertices	0

Log file: CFVR1003.DAT

  FINISH
  ~CFCLEAR,,1
  NomFile='CFVR1003'
  /TITLE, %NomFile%, Eurocode 3 1992 test: Tension and Compression

! ---------------------------------------------------------------------------------
! Model definition and solve
! ---------------------------------------------------------------------------------
! CivilFEM Setup: Code & Units
  ~UNITS,,LENG,M
  ~UNITS,,TIME,S
  ~UNITS,,FORC,KN
  ~CODESEL,EC3-92

/PREP7
! Preprocessor
! --------------------------------------------------
! Materials
  ~CFMP,1,LIB,STEEL,EC3,Fe 430   !Fe 430 (EC3)
! Element Types
  ET,1,LINK1 ! Type 1: 2D Spar

! Cross Sections
  ~SSECLIB,1,1,23,11   !Angular L 120 x 120 x 12
! Code Properties
  ~SECMDF,1,EC3PROP,AHOLES,,3.6e-004

! Beam Properties
 ~BMSHPRO,1,BEAM,1,1,,,1,1,0,,

! Nodes
  N, 1
  N,2,1
  N,3,,-0.5
! Elements
  E,1,2
  E,3,2
  EPLOT
/SOLU
! Solution
! --------------------------------------------------
! Displacements
  D, 1,ALL
  D, 3,ALL
! Apply Load
  F,2,FY,-300
! Solve
  SOLVE
/POST1
! Postprocessor
! --------------------------------------------------
! Read results
  ~CFSET,,1,1       !Read the first load step
! Plot FX
  ~PLLSFOR,F,X,-1
! Check in Bending
  ~CHKSTL,TENSION,-Z,PARTIAL
  ~CHKSTL,COMPRESS,-Z,PARTIAL

!--------------------------------------------------------------------------------------
! DATA CHECK
!--------------------------------------------------------------------------------------
! Data comparison number
  NComp = 8
  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) = 'CLASS1'
  LABEL(2,1) = 'Nsd1'
  LABEL(3,1) = 'NuRd1'
  LABEL(4,1) = 'Crit1'
  LABEL(5,1) = 'CLASS2'
  LABEL(6,1) = 'Nsd2'
  LABEL(7,1) = 'NcRd2'
  LABEL(8,1) = 'Crit2'

! Correct values
! ---------------------------------------------------------------------------------
  VALUE(1,1)=1
  VALUE(2,1)=600
  VALUE(3,1)=741.1824
  VALUE(4,1)=0.871459
  VALUE(5,1)=2
  VALUE(6,1)=670.82
  VALUE(7,1)=688.5
  VALUE(8,1)=0.974321

! Obtained values
! ---------------------------------------------------------------------------------
  ! Eurocode No.3 Check Tension
    ~CFSET,1      !Read first alternative
   ~PLLSSTL,CLASS
   *GET,VALUE(1,2),ELEM,1,ETAB,CLASS_I
   ~PLLSSTL,NSD
   *GET,VALUE(2,2),ELEM,1,ETAB,CFETAB_I
   ~PLLSSTL,NURD
   *GET,VALUE(3,2),ELEM,1,ETAB,CFETAB_I
   ~PLLSSTL,CRT_TOT
   *GET,VALUE(4,2),ELEM,1,ETAB,CFETAB_I

  ! Eurocode No.3 Check Compression
    ~CFSET,2      !Read second alternative
    ~PLLSSTL,CLASS
   *GET,VALUE(5,2),ELEM,2,ETAB,CLASS_I
   ~PLLSSTL,NSD
   *GET,VALUE(6,2),ELEM,2,ETAB,CFETAB_I
   ~PLLSSTL,NCRD
   *GET,VALUE(7,2),ELEM,2,ETAB,CFETAB_I
   ~PLLSSTL,CRT_TOT
   *GET,VALUE(8,2),ELEM,2,ETAB,CFETAB_I

! Warning and error tolerances
  TOLER( 1, 1)= 0    $ TOLER( 1, 2)= 0
  TOLER( 2, 1)= 1E-2 $ TOLER( 2, 2)= 1E-1
  TOLER( 3, 1)= 1E-2 $ TOLER( 3, 2)= 1E-1
  TOLER( 4, 1)= 1E-3 $ TOLER( 4, 2)= 1E-2
  TOLER( 5, 1)= 0    $ TOLER( 5, 2)= 0
  TOLER( 6, 1)= 1E-2 $ TOLER( 6, 2)= 1E-1
  TOLER( 7, 1)= 1E-2 $ TOLER( 7, 2)= 1E-1
  TOLER( 8, 1)= 1E-3 $ TOLER( 8, 2)= 1E-2

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

Results

Label	Target	CivilFEM	Ratio	Tolerance
CLASS1	1	1	1.000	0
Nsd1	600	600	1.000	0.1
NuRd1	741.18	741.18	1.000	0.1
Crit1	0.87146	0.87146	1.000	0.01
CLASS2	2	2	1.000	0
Nsd2	670.82	670.82	1.000	0.1
NcRd2	688.5	688.5	1.000	0.1
Crit2	0.97432	0.97432	1.000	0.01

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CFVR1003 - Eurocode 3 1992 test: Tension and Compression

Tension and compresion checking according to CTE DB SE-A

Results