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CFVR7512 - Steel checking according to ANSI AISC N690-1994

Bending checking of a cantilever steel beam

A steel cantilever beam with built-up W shape section is subjected to vertical forces in both directions at free end.
Determine the total criterion according to ANSI AISC N690-1994 considering bending about minor axis.

Element types used in the model: BEAM188

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
Beam
Cross Section
Code Checking/Design
Steel
AISC N690-94

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: CFVR7512.DAT


FINISH
~CFCLEAR,,1

   NomFile='CFVR7512'
 /TITLE, %NomFile%, Bending checking according to ANSI AISC N690
! -------------------------------------------------------------------------------------
! Initial data
! -------------------------------------------------------------------------------------
! CivilFEM SETUP
~CFACTIV,NUCL,Y
~CODESEL,N690,EC2-91,EC2-91,,EC8-94

/PREP7

ET,1,Beam188,,,2

~CFMP,1,LIB,STEEL,ASTM,A441
~SSECDMS,1,I,1,0.40,0.015,0.30,0.015
~MEMBPRO,1,N690,ALL,3,2,2,1,1
~BMSHPRO,1,BEAM,1,1,,,188,1,1,,Beam 1

N,1
N,2,3
E,1,2

/SHRINK,0
/ESHAPE,1.0

EPLOT

D,1,ALL

F,2,FY,-40000
F,2,FZ,-10000

/SOLU
SOLVE

/POST1
~CFSET,0,1,LAST

! Check about Y axis (minor)
~CHKSTL,BENDING,1

!--------------------------------------------------------------------------------------
! DATA CHECK
!--------------------------------------------------------------------------------------
! Data comparison number
  NComp = 6
  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) = 'RE '
  LABEL(2,1) = 'RPG '
  LABEL(3,1) = 'FOB'
  LABEL(4,1) = 'MB '
  LABEL(5,1) = 'FB '
  LABEL(6,1) = 'CRT_TOT'


! Correct values
  VALUE(1,1)=0.0
  VALUE(2,1)=0.0
  VALUE(3,1)=0.0
  VALUE(4,1)=66666666.6
  VALUE(5,1)=248211288
  VALUE(6,1)=0.268


! Comparison

 ~PLLSSTL,RE
 *GET,VALUE(1,2),ELEM,1,ETAB,CFETAB_I
 ~PLLSSTL,RPG
 *GET,VALUE(2,2),ELEM,1,ETAB,CFETAB_I
 ~PLLSSTL,FOB
 *GET,VALUE(3,2),ELEM,1,ETAB,CFETAB_I
 ~PLLSSTL,MB
 *GET,VALUE(4,2),ELEM,1,ETAB,CFETAB_I
 ~PLLSSTL,FB
 *GET,VALUE(5,2),ELEM,1,ETAB,CFETAB_I
~PLLSSTL,CRT_TOT
 *GET,VALUE(6,2),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+06   $ TOLER( 4, 2)= 1E+06	! Rounding error accepted
  TOLER( 5, 1)= 1E+06   $ TOLER( 5, 2)= 1E+06	! Rounding error accepted
  TOLER( 6, 1)= 1E-02   $ TOLER( 6, 2)= 1E-02	! Rounding error accepted
!--------------------------------------------------------------------------------------
! Results comparison
!--------------------------------------------------------------------------------------
  COMPARA.MAC






Results

LabelTargetCivilFEMRatioTolerance
RE 0 00.000 0.001
RPG 0 00.000 0.001
FOB 0 00.000 0.001
MB6.6667e+0076.6564e+0071.002 1e+006
FB2.4821e+0082.4871e+0080.998 1e+006
CRT_TOT 0.268 0.267641.001 0.01


Contains proprietary and confidential information of Ingeciber, S.A.