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CFVR3004 - EFS application on a rectangular foundation (SHELL41)


This example tests the EFS application on a rectangular foundation, modelled as a rectangular shell.
For this purpose, it applies the maximum ballast value to the foundation.
It test the following EFS values:

  • Real value on element.
  • EFS on element 1.
  • Minimum value.
  • Maximum value.
  • Average value.

Element types used in the model: SHELL41

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
Materials
Geotechnics
Material Models

Model Statistics
Number of elements 25
Number of nodes 36
Number of civil materials 1
Number of cross sections 0
Number of shell vertices 0

Log file: CFVR3004.DAT


  FINISH
  ~CFCLEAR,,1
  ~CFACTIV,GETC,Y

  NomFile='CFVR3004'
  /TITLE, %NomFile%, EFS application on a rectangular foundation (SHELL41)

! -------------------------------------------------------------------------------------
! Initial data
! -------------------------------------------------------------------------------------
! CivilFEM SETUP
  ~UNITS,SI
  ~CODESEL,EC3-92,EHE,,,EC8-94

/PREP7
! Materiales
! --------------------------------------------------
! Soil
~CFMP,1,LIB,SOIL,,PH
~CFMP,1,SOIL,NUXYST,,0.35

! Elements
! --------------------------------------------------
   ET,1,41
   R,1,1,1,1,1

! Model
! --------------------------------------------------
  ! Keypoints
   k,1,0,0
   k,2,5,0
   k,3,5,10
   k,4,0,10
  ! Lines
   l,1,2
   l,2,3
   l,3,4
   l,4,1
   lesize,all,,,5
  ! Area
   a,1,2,3,4
  ! Elements
   amap,1,1,2,3,4

! Terrain
! --------------------------------------------------
  ~TERDEF, 1,NEW, 1, 0, Z
  ~TERDEF, 1,LAYER, 1, 1, 6, 0, DB

! Calculate foundation
! --------------------------------------------------
   ~efscalc,1   ,1

! 7. APPLY EFS
! --------------------------------------------------
!  ~EFSAPPL,UCIM,VALUE
   ~efsappl,1   ,2

!--------------------------------------------------------------------------------------
! DATA CHECK
!--------------------------------------------------------------------------------------
! Data comparison number
  NComp    = 5
  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)  = 'Real val'
  LABEL( 2)  = 'EFS'
  LABEL( 3)  = 'Minimum'
  LABEL( 4)  = 'Maximum'
  LABEL( 5)  = 'Average'

! Correct data, obtained data
!--------------------------------------------------------------------------------------
   VALUE( 1,1) = 235e3    ! Real value on element 1.
   VALUE( 2,1) = 297e3    ! EFS on element 1.
   VALUE( 3,1) = 151e3    ! Minimum value.
   VALUE( 4,1) = 297e3    ! Maximum value.
   VALUE( 5,1) = 188e3    ! Average value.
   ~CFGET,VALUE( 1,2),FOUNDAT,1,ELEM,EFS,,1  ! Value on element 1.
   *GET,  VALUE( 2,2),RCON,   1,CONST,6      ! EFS on element 1.
   ~CFGET,VALUE( 3,2),FOUNDAT,1,EFS,Min      ! Minimum value.
   ~CFGET,VALUE( 4,2),FOUNDAT,1,EFS,Max      ! Maximum value.
   ~CFGET,VALUE( 5,2),FOUNDAT,1,EFS,Med      ! Average value.

! Warning and error tolerances
  *DO,II,1,5
    TOLER(II,1) = 1E3
    TOLER(II,2) = 1E3
  *ENDDO

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

Results

LabelTargetCivilFEMRatioTolerance
Real val 2.35e+0052.347e+0051.001 1000
EFS 2.97e+0052.975e+0050.998 1000
Minimum 1.51e+0051.5097e+0051.000 1000
Maximum 2.97e+0052.975e+0050.998 1000
Average 1.88e+0051.8814e+0050.999 1000


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