CFVR3003 - Circular Foundation Stiffness (SURF154)

This example tests the stiffness of a circular foundation, modelled as a circular surface.
For this purpose, it tests the stiffness at the following locations:

Sides
Center

Element types used in the model: SURF154

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	145
Number of nodes	474
Number of civil materials	1
Number of cross sections	0
Number of shell vertices	0

Log file: CFVR3003.DAT

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

  NomFile='CFVR3003'
  /TITLE, %NomFile%, Circular foundation stiffness (SURF154)

! -------------------------------------------------------------------------------------
! 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,1,154

! Model
! --------------------------------------------------
  ! Keypoints
   k,1,0,0
  ! Lines
   circle,1,10,,,,4
   lesize,all,,,10
  ! Area
   a,2,3,4,5
  ! Hard Point
   hptcreate,AREA,1,10,COORD,0,0,0
  ! Elements
   amesh,1

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

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

!--------------------------------------------------------------------------------------
! 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)  = 'Center'
  LABEL( 2)  = 'Side'

! Correct data, obtained data
!--------------------------------------------------------------------------------------
   VALUE( 1,1) = 56980     ! Center
   VALUE( 2,1) = 89500     ! Side
   ~CFGET,VALUE( 1,2),FOUNDAT,1,NODE,EFS,,187 ! Center
   ~CFGET,VALUE( 2,2),FOUNDAT,1,NODE,EFS,,1   ! Side

! Warning and error tolerances
  TOLER(  1,1) = 1E2   $  TOLER(  1,2) = 1E2
  TOLER(  2,1) = 1E2   $  TOLER(  2,2) = 1E2

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

Results

Label	Target	CivilFEM	Ratio	Tolerance
Center	56980	56978	1.000	100
Side	89500	89587	0.999	100

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CFVR3003 - Circular Foundation Stiffness (SURF154)

Results