CFVR1258 - Cracking checking according to ITER Structural Design Code for Buildings
check a reinforced concrete beam by cracking according to ITER Structural Design Code for Buildings
A fixed beam which has a rectangular reinforced concrete section is subjected to a bending moment of 300 kN*m on the Y axis direction.
The aim of the example is to obtain the check criterion according to ITER Structural Design Code for Buildings.
This example is based in EXAMPLE 7.3 of the EUROCODE 2 WORKED EXAMPLES of the European Concrete Platform.
Element types used in the model: BEAM44 Needed CivilFEM Modules: |
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| Model Statistics | |
| Number of elements | 4 |
| Number of nodes | 5 |
| Number of civil materials | 2 |
| Number of cross sections | 1 |
| Number of shell vertices | 0 |
Log file: CFVR1258.DAT
FINISH ~CFCLEAR,,1 NomFile='CFVR1258' /TITLE,%NomFile%, Cracking checking according to ITER Structural Design Code for Buildings ! ------------------------------------------------------------------------------------- ! Initial data ! ------------------------------------------------------------------------------------- ! CivilFEM SETUP ~UNITS,SI ~CODESEL,EC3-92,ITER,EC2-08,,EC8-04 ! Preprocessor /PREP7 ! Material Definition ~CFMP,1,LIB,CONCRETE,EHE,HA-30 ~CFMP,1,EC2_C,GAMc,,1.0 ~CFMP,1,EC2_C,ALP ,,1.0 ~CFMP,2,LIB,REINF,EHE,B500S ~CFMP,2,EC2_S,GAMs,,1 ! Element Type Definition ET,1,Beam44 ! Cross-section definition ~CSECDMS,1,REC,1,0.6,0.4,,,,,,,1,2 ~RNFMDF,1,RBDEF,RMAT,2 ~RNFMDF,1,RBDEF,RKEY,0 ~RNFMDF,1,1,FI,12 ~RNFMDF,1,1,N,4 ~RNFMDF,1,2,FI,24 ~RNFMDF,1,2,N,6 ~SECMDF,1,EC2PROP,RHOr,,2712/(400*600)/0.2012,2 ! Beam & Shell property ~BMSHPRO,1,BEAM,1,1,,,44,,,, ! Model Construction N,1 ! Nodes input N,5,5 FILL,1,5 E,1,2 ! Elements input EGEN,4,1,1,1 D,1, , , , , ,ALL ! Constraint conditions /SOLU Mz = 3e5 ! Mz Bending moment My = 0.0 ! My Bending moment N = 0 ! Axial force F,5,FX,N F,5,MZ,Mz F,5,MY,My SOLVE ! Load Step 1 /POST1 ! Postprocessor ~CFSET,,1,1 ! Read first load step ~CHKCON,CRACK, ,0,0.0001,,0.6 ! Alernative 1 !-------------------------------------------------------------------------------------- ! 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) = 'SRMAX' LABEL( 2) = 'WK' LABEL( 3) = 'SIGMA' LABEL( 4) = 'POS' LABEL( 5) = 'CRT' ! Correct data, obtained data !-------------------------------------------------------------------------------------- ! Alternative 1 ~CFSET,1 ~PLLSCON,SRMAX,1, VALUE( 1,1) = 208.64E-3 $ *GET,VALUE( 1,2),ELEM,3,ETAB,CFETAB_I ~PLLSCON,WK,1, VALUE( 2,1) = 0.184E-3 $ *GET,VALUE( 2,2),ELEM,3,ETAB,CFETAB_I ~PLLSCON,SIGMA,1, VALUE( 3,1) = 234e6 $ *GET,VALUE( 3,2),ELEM,3,ETAB,CFETAB_I ~PLLSCON,POS,1, VALUE( 4,1) = -1 $ *GET,VALUE( 4,2),ELEM,3,ETAB,CFETAB_I ~PLLSCON,CRT_TOT,1, VALUE( 5,1) = 0.184E-3/0.0001 $ *GET,VALUE( 5,2),ELEM,3,ETAB,CFETAB_I ! Warning and error tolerances TOLER(1,1) = 1E-3 $ TOLER(1,2) = 1E-3 TOLER(2,1) = 1.5E-5 $ TOLER(2,2) = 1.5E-5 TOLER(3,1) = 5E6 $ TOLER(3,2) = 5E6 TOLER(4,1) = 1E-3 $ TOLER(4,2) = 1E-3 TOLER(5,1) = 1.5E-1 $ TOLER(5,2) = 1.5E-1 !-------------------------------------------------------------------------------------- ! Results comparison !-------------------------------------------------------------------------------------- COMPARA.MAC |
Results
| Label | Target | CivilFEM | Ratio | Tolerance |
| SRMAX | 0.20864 | 0.20865 | 1.000 | 0.001 |
| WK | 0.000184 | 0.0001959 | 0.935 | 1.5e-005 |
| SIGMA | 2.34e+008 | 2.2931e+008 | 1.020 | 5e+006 |
| POS | -1 | -1 | 1.000 | 0.001 |
| CRT | 1.84 | 1.959 | 0.935 | 0.15 |
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