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CFVR8623 - AISC-ASD14: Shear Checking of a WT-shape Section

Shear checking according to AISC ASD14 WT-shape cross section.

A cantilever steel beam is subjected to end shears of 70 kips

The beam has a length of 100 in.
Section material properties: ASTM A529 Gr50, Fy = 50 ksi
Geometric properties: WT 9x17.5, d = 8.85 in., tw = 0.30 in. The aim of the example is to obtain the shear criterion according to AISC ASD14.
Reference: AISC, Design Examples, Version 14.0

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
AISC14

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: CFVR8623.DAT


! DESCRIPTION 

FINISH
~CFCLEAR,,1
NomFile='CFVR8623'
/TITLE, %NomFile%, AISC ASD14: Shear checking WT-Shape section

!-------------------------------------------------------------------------------
! Model definition
!-------------------------------------------------------------------------------
! CivilFEM Setup: Code & Units
~UNITS,,LENG,IN
~UNITS,,TIME,S
~UNITS,,FORC,KIPS
~UNITS,,PRES,,0 ,ksi
~CODESEL,AISC14
   

/PREP7

! Materials
~CFMP,1,LIB,STEEL,ASTM,A529Gr50

! Element Types
ET,1,BEAM3  ! Type 1: 2D Beam

! Cross Section
~SSECLIB,1,1,58,152   !WT  8x 50

! Beam & Shell Property
~BMSHPRO,1,BEAM,1,1,,,3,1,0,,Beam 1

! Nodes
N,1,0.,0.
N,2,100.,0.

! Elements
E,1,2
  
/SOLU
! Loads
D,1,ALL
F,2,FY,70.

SOLVE

/POST1
~CFSET,,1,1 
~CHKSTL,SHEAR,Z,ASD

!-------------------------------------------------------------------------------------
! DATA CHECK
!-------------------------------------------------------------------------------------
! Data comparison number
NComp = 3
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) = 'VN'
LABEL(2,1) = 'AW'
LABEL(3,1) = 'CRT_TOT'

! Correct values
VALUE(1,1) = 148.9
VALUE(2,1) = 4.964
VALUE(3,1) = 70./(148.9/1.67)

! Comparison
~CFGET,VALUE(1,2),ELEMENT,1,RESULT,VN,J
~CFGET,VALUE(2,2),ELEMENT,1,RESULT,AW,J
~CFGET,VALUE(3,2),ELEMENT,1,RESULT,CRT_TOT,J


! Warning and error tolerances
TOLER(1,1)= 0.05*VALUE(1,1) $ TOLER(1,2)= 0.05*VALUE(1,1)
TOLER(2,1)= 0.05*VALUE(2,1) $ TOLER(2,2)= 0.05*VALUE(2,1) 
TOLER(3,1)= 0.05*VALUE(3,1) $ TOLER(3,2)= 0.05*VALUE(3,1) 

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

Results

LabelTargetCivilFEMRatioTolerance
VN 148.9 148.911.000 7.445
AW 4.964 4.96371.000 0.2482
CRT_TOT 0.78509 0.785031.000 0.03925


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