CFVR7407 - Compression checking according to ASD 9th Edition
Compression with flexural-torsional buckling checking
A steel cantilever beam with L angle shape section is subjected to an axial compression force of 30 KN at free end.
Determine the total criterion according to ASD 9th Edition.
Element types used in the model: BEAM188 Needed CivilFEM Modules: |
|
| Model Statistics | |
| Number of elements | 1 |
| Number of nodes | 2 |
| Number of civil materials | 1 |
| Number of cross sections | 1 |
| Number of shell vertices | 0 |
Log file: CFVR7407.DAT
FINISH ~CFCLEAR,,1 NomFile='CFVR7407' /TITLE, %NomFile%, Compression with flexursl-torsional buckling check ASD 9th Edition ! ------------------------------------------------------------------------------------- ! Initial data ! ------------------------------------------------------------------------------------- ! CivilFEM SETUP ~CFACTIV,NUCL,Y ~CODESEL,ASD9,EC2-91,EC2-91,,EC8-94 /PREP7 ET,1,Beam188,,,2 ~CFMP,1,LIB,STEEL,ASTM,A441 ~SSECLIB,1,1,57,71 !L 4x4x1/4 ~MEMBPRO,1,ASD9,ALL,2,2,2,2,1 ~BMSHPRO,1,BEAM,1,1,,,188,1,1,,Beam 1 N,1, N,2,2 E,1,2 /SHRINK,0 /ESHAPE,1.0 EPLOT D,1,ALL F,2,FX,-30000 /SOLU SOLVE /POST1 ~CFSET,0,1,LAST ~CHKSTL,COMPFTBK !-------------------------------------------------------------------------------------- ! DATA CHECK !-------------------------------------------------------------------------------------- ! Data comparison number NComp = 8 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) = 'QS' LABEL(2,1) = 'QA' LABEL(3,1) = 'Q' LABEL(4,1) = 'LAMBDA' LABEL(5,1) = 'FE' LABEL(6,1) = 'SLEND' LABEL(7,1) = 'FAFT' LABEL(8,1) = 'CRT_TOT' ! Correct values VALUE(1,1)=0.8342 VALUE(2,1)=1 VALUE(3,1)=0.8342 VALUE(4,1)=203.82 VALUE(5,1)=4.75144044E+07 VALUE(6,1)=198.088 VALUE(7,1)=2.479012406E+07 VALUE(8,1)=0.967 ! Comparison ~PLLSSTL,QS *GET,VALUE(1,2),ELEM,1,ETAB,CFETAB_I ~PLLSSTL,QA *GET,VALUE(2,2),ELEM,1,ETAB,CFETAB_I ~PLLSSTL,Q *GET,VALUE(3,2),ELEM,1,ETAB,CFETAB_I ~PLLSSTL,LAMBDA *GET,VALUE(4,2),ELEM,1,ETAB,CFETAB_I ~PLLSSTL,FE *GET,VALUE(5,2),ELEM,1,ETAB,CFETAB_I ~PLLSSTL,SLEND *GET,VALUE(6,2),ELEM,1,ETAB,CFETAB_I ~PLLSSTL,FAFT *GET,VALUE(7,2),ELEM,1,ETAB,CFETAB_I ~PLLSSTL,CRT_TOT *GET,VALUE(8,2),ELEM,1,ETAB,CFETAB_I ! Warning and error tolerances TOLER( 1, 1)= 1E-03 $ TOLER( 1, 2)= 1E-03 TOLER( 2, 1)= 1E-03 $ TOLER( 2, 2)= 1E-03 TOLER( 3, 1)= 1E-03 $ TOLER( 3, 2)= 1E-03 TOLER( 4, 1)= 1E-01 $ TOLER( 4, 2)= 1E-01 ! Rounding error accepted TOLER( 5, 1)= 1E+04 $ TOLER( 5, 2)= 1E+04 ! Rounding error accepted TOLER( 6, 1)= 1E-03 $ TOLER( 6, 2)= 1E-03 TOLER( 7, 1)= 1E+03 $ TOLER( 7, 2)= 1E+03 ! Rounding error accepted TOLER( 8, 1)= 1E-03 $ TOLER( 8, 2)= 1E-03 !-------------------------------------------------------------------------------------- ! Results comparison !-------------------------------------------------------------------------------------- COMPARA.MAC |
Results
| Label | Target | CivilFEM | Ratio | Tolerance |
| QS | 0.8342 | 0.83428 | 1.000 | 0.001 |
| QA | 1 | 1 | 1.000 | 0.001 |
| Q | 0.8342 | 0.83428 | 1.000 | 0.001 |
| LAMBDA | 203.82 | 203.79 | 1.000 | 0.1 |
| FE | 4.7514e+007 | 4.7516e+007 | 1.000 | 1e+004 |
| SLEND | 198.09 | 198.09 | 1.000 | 0.001 |
| FAFT | 2.479e+007 | 2.4791e+007 | 1.000 | 1000 |
| CRT_TOT | 0.967 | 0.96684 | 1.000 | 0.001 |
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