CFVR4515 - GB50017: Axial Checking

A pinned-pinned steel beam, is subjected to a compression load of 800 Kips.
The beam has a length of 240 in.
The cross section is a double T, W 27x84.
The beam is made of GB 50017 Q390.
The aim of the example is to obtain the axial criterion according to GB 50017.

Element types used in the model: BEAM3

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

Steel

Code Checking/Design

GB 50017

Model Statistics
Number of elements	19
Number of nodes	20
Number of civil materials	1
Number of cross sections	1
Number of shell vertices	0

Log file: CFVR4515.DAT

  FINISH
  ~CFCLEAR,,1
  NomFile='CFVR4515'
  /TITLE, %NomFile%, GB50017: Axial Checking

! ---------------------------------------------------------------------------------
! Model definition
! ---------------------------------------------------------------------------------
! CivilFEM Setup: Code & Units
  ~CODESEL,GB50017,EC2,,,EC8-94
  ~UNITS,,LENG,IN
  ~UNITS,,TIME,S
  ~UNITS,,FORC,KIPS
  ~UNITS,,PRES,,0,uuP
  ~UNITS,,MASS,,0,uuM

  /PREP7
! Preprocessor
! --------------------------------------------------
! Materials
  ~CFMP,1,LIB,STEEL,GB50017,Q390   ! GB50017  Q390
! Element Types
  ET,1,Beam3
! Cross Section
  ~SSECLIB,1,1,51,91   ! W 27x84   I Double T
! Beam & Shell Property
  ~BMSHPRO,1,BEAM,1,1,,,3,1,0,,Beam 1
! Member property
  ~MEMBPRO,1,GB50017,ALL,0.0,0.0,0,0,240.0,1.0,1.0

! Nodes
  N,1
  N,20,,240
  FILL,1,20,18, , ,1,1,1,
! Elements
  E,1,2
  EGEN,19,1,1,1

! Solution
! --------------------------------------------------
/SOLU
! Constrains
  D,1, , , , , ,UX,UY
  D,20, , , , , ,UX
! Apply Load
  F,20,FY,-800
  F,1,FY,800
! Solve
  SOLVE

/POST1
! Postprocessor
! --------------------------------------------------
! Read results
  ~CFSET,,1,1                  ! First load case
! Axial checking
  ~CHKSTL,AXIAL

!--------------------------------------------------------------------------------------
! DATA CHECK
!--------------------------------------------------------------------------------------
  NComp    =  2
  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) = 'SEQ'
  LABEL(2,1) = 'CRT_TOT'

! Correct values
  VALUE(1,1) = -3.2258E+01
  VALUE(2,1) = 0.635461

! Obtained values
  ~PLLSSTL,SEQ
  *GET,VALUE(1,2),ELEM,13,ETAB,CFETAB_I
  ~PLLSSTL,CRT_TOT
  *GET,VALUE(2,2),ELEM,13,ETAB,CFETAB_I

! Warning and error tolerances
  TOLER(1,1) = 1E-4 $ TOLER(1,2) = 1E-4
  TOLER(2,1) = 1E-5 $ TOLER(2,2) = 1E-5

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

Results

Label	Target	CivilFEM	Ratio	Tolerance
SEQ	-32.258	-32.258	1.000	0.0001
CRT_TOT	0.63546	0.63546	1.000	1e-005

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CFVR4515 - GB50017: Axial Checking

Results