CFVR7912 - CTE DB SE-A test: Pipe Shear Check

Bending and shear checking according to CTE DB SE-A

A fixed steel beam subjected to a surface load of 1000 kN/m.
The beam has a length of 1 m.
The cross section is a P 3/4.
The beam is made of Fe 430 steel which has a fy of 275000 kN/m².
The aim of the example is to obtain shear area and plastic strength in section shear force according to CTE DB SE-A.

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

Steel

Code Checking/Design

CTE

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: CFVR7912.DAT

   FINISH
  ~CFCLEAR,,1
   NomFile='CFVR7912'
  /TITLE, %NomFile%, CTESEA test: Pipe Shear Check
  
  PI=ACOS(-1)

! ---------------------------------------------------------------------------------
! Model definition and solve
! ---------------------------------------------------------------------------------
! CivilFEM Setup: Code & Units
  ~UNITS,,LENG,M
  ~UNITS,,TIME,S
  ~UNITS,,FORC,KN
  ~CODESEL,CTESEA

/PREP7
! Materials
  ~CFMP,1,LIB,STEEL,EC3,Fe 430   ! Fe 430 (EC3)
! Element Types
  ET,1,188       
  KEYOPT,1,3,2  
! Cross sections
   ~SSECLIB,1,1,62,2   ! P 3/4 

! Beam Properties
 ~BMSHPRO,1,BEAM,1,1,,,188,1,0,,

! Nodes
  N, 1
  N, 2,1
! Elements
  E,1,2  
  EPLOT
  
/SOLU
! Restraints
  D, 1,ALL

! Apply Load
  SFBEAM,ALL,2,PRES,10
  
! Solve
  SOLVE
  
FINISH
/POST1

! Read results
  ~CFSET,,1,1       ! Read the first load step
  
! Check in Bending + Shear
  ~CHKSTL,SHEAR,-Z,PARTIAL

!--------------------------------------------------------------------------------------
! DATA CHECK
!--------------------------------------------------------------------------------------
! Data comparison number
  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) = 'S_AREA'
  LABEL(2,1) = 'VplRd'

! Correct values
!--------------------------------------------------------------------------------------
  ~CFGET, ABruta, SECTION, 1, MECHPROP, A, , 2
  Fyd=275000/1.05 ! kN/m2
  VALUE(1,1)=2*ABruta/PI				! According to CTE 6.2.4
  VALUE(2,1)=2*ABruta/PI*Fyd/sqrt(3)			

! Obtained values
!--------------------------------------------------------------------------------------
 ~CFGET, VALUE(1,2), ELEMENT, 1 ,RESULT , S_AREA,I
 ~CFGET, VALUE(2,2), ELEMENT, 1 ,RESULT , VPLRD,I
  
! Warning and error tolerances
  TOLER( 1, 1)= 1E-3 $ TOLER( 1, 2)= 1E-3
  TOLER( 2, 1)= 1E-3 $ TOLER( 2, 2)= 1E-3

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

Results

Label	Target	CivilFEM	Ratio	Tolerance
S_AREA	0.00013677	0.00013677	1.000	0.001
VplRd	20.681	20.681	1.000	0.001

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CFVR7912 - CTE DB SE-A test: Pipe Shear Check

Bending and shear checking according to CTE DB SE-A

Results