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CFVR5231 - Prestressing tendon definition from lines, without a support beam.

Solid model tendon analysis using free tendon capability ~GENTEN command.

A prestressed solid beam with rectangular section which dimensions are 0.4x0.3m and 8m of length, a table of total additional losses is applied. This test checks that final applied cable tension is equal to initial tension minus total losses at each point.
The final array must give null results for all its components.

Element types used in the model: SOLID45

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
Free Tendon
Prestressed Concrete

Model Statistics
Number of elements 16
Number of nodes 68
Number of civil materials 3
Number of cross sections 0
Number of shell vertices 0

Log file: CFVR5231.DAT


FINISH
~CFCLEAR,,1
~CFACTIV,PRSC,Y
NomFile='CFVR5231'
/TITLE, %NomFile%, Solid Model with Free Tendons (~GENTEN TABLE LOSSES)

! -------------------------------------------------------------------------------------
! Initial data
! -------------------------------------------------------------------------------------
~UNITS,,LENG,M  
~UNITS,,TIME,S  
~UNITS,,FORC,KN 
~UNITS,,PRES,,0 ,uuP
~UNITS,,MASS,,0 ,uuM
/VIEW,1,-1  

! Parameters
a = 0.40		! width section (m)
b = 0.30    	! height section (m)
L = 8.00    	! Length beam (m)
IniTen= 340 	! Initial tension (KN)
ESiz= 0.5		! Element Size

/PREP7

! Materials
~CFMP,1,LIB,CONCRETE,EC2,C25/30 
~CFMP,2,LIB,REINF,EC2,S500    
~CFMP,3,LIB,PREST,EHE,Y1860S7   
~CFMP,3,Prest   ,MU      ,,0
~CFMP,3,Prest   ,K       ,,0
~CFMP,3,Prest   ,A       ,,0

! Elements
ET,1,SOLID45 

! GEOMETRY AND MESHING
BLOCK,-a/2,a/2,-b/2,b/2,0,L		
MSHAPE,0,3D 
MSHKEY,1
ESIZE,ESiz,0,
VMESH,ALL

! Boundary conditions
NSEL,S,LOC,Z,0
NSEL,R,LOC,Y,0
D,ALL,UY  

NSEL,S,LOC,Z,L
D,ALL,ALL

! KP & Lines for tendon definition
KSEL,NONE
NUMSTR,KP,1001
K,,  0.00,      0.00,     0.000
K,,  0.00,-0.448E-01,     1.00 
K,,  0.00,-0.762E-01,     2.00 
K,,  0.00,-0.870E-01,     3.00 
K,,  0.00,-0.793E-01,     4.00 
K,,  0.00,-0.561E-01,     5.00 
K,,  0.00,-0.174E-01,     6.00 
K,,  0.00, 0.367E-01,     7.00 
K,,  0.00, 0.870E-01,     8.00 
 
NumKP=9
LSEL,NONE
*DO,JJ,1001,999+NumKP
	L,JJ,JJ+1
*ENDDO	

! Additional losses table: Real length, measured from KPINI=1001
table_loss=
*DIM,table_loss,TABLE,NumKP
table_loss(1,0)=  0.100,   1.00,   2.00,   3.00,   4.00,   5.00,   6.00,   7.00,   8.00
table_loss(1,1)=  120.0,  115.0,  110.0,  105.0,  103.0,  109.0,  113.0,  117.0, 124.0

FINISH
/SOLU

~GENTEN,  1,  IniTen, 1001, 1 , 3, 1, 2,table_loss, 2

TENSIONINI=
*DIM,TENSIONINI,ARRAY,25  ! Initial tension matrix
TENSIONCOMP=
*DIM,TENSIONCOMP,ARRAY,25  ! Comparison final tension matrix
TENSIONDIFF=
*DIM,TENSIONDIFF,ARRAY,25  ! Final tension difference matrix
*VFILL,TENSIONINI(1),RAMP, IniTen,0
*VOPER,TENSIONCOMP(1) ,TENSIONINI(1) ,SUB, ADD_LOSSES_1(1)
*VOPER,TENSIONDIFF(1) ,TENSIONCABLE_1(1) ,SUB, TENSIONCOMP(1)

!--------------------------------------------------------------------------------------
! DATA CHECK
!--------------------------------------------------------------------------------------
! Data comparison number
  NComp    = 25
  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
!--------------------------------------------------------------------------------------
  *DO,JJ,1,25
	LABEL( JJ)= ' T%JJ%'
  *ENDDO

! Correct data, obtained data
!--------------------------------------------------------------------------------------
  *DO,JJ,1,25
	VALUE( JJ,1)= TENSIONCOMP(JJ)
	VALUE( JJ,2)= TENSIONCABLE_1(JJ)
  *ENDDO    

! Warning and error tolerances
  *DO,II,1,25
    TOLER(II,1)  = 1E-02
    TOLER(II,2)  = 1E-02
  *ENDDO 

!--------------------------------------------------------------------------------------
! Result comparison
!--------------------------------------------------------------------------------------
  COMPARA.MAC



Results

LabelTargetCivilFEMRatioTolerance
T1 220 2201.000 0.01
T2 221.3 221.31.000 0.01
T3 223.15 223.151.000 0.01
T4 225.01 225.011.000 0.01
T5 226.67 226.671.000 0.01
T6 228.34 228.341.000 0.01
T7 230.01 230.011.000 0.01
T8 231.67 231.671.000 0.01
T9 233.34 233.341.000 0.01
T10 235 2351.000 0.01
T11 235.67 235.671.000 0.01
T12 236.34 236.341.000 0.01
T13 236.99 236.991.000 0.01
T14 234.99 234.991.000 0.01
T15 232.99 232.991.000 0.01
T16 230.99 230.991.000 0.01
T17 229.66 229.661.000 0.01
T18 228.32 228.321.000 0.01
T19 226.99 226.991.000 0.01
T20 225.65 225.651.000 0.01
T21 224.32 224.321.000 0.01
T22 222.97 222.971.000 0.01
T23 220.64 220.641.000 0.01
T24 218.3 218.31.000 0.01
T25 216 2161.000 0.01


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