CFVR0949 - Shell shear reinforcement design according to ACI-349

Shell shear reinforcement design according to ACI-349.

The model is made up of two square shell elements of 1.0m x 1.0m. The nodes of one side are completely restrained and one of the nodes between both element has its vertical movement restrained (perpendicular to the shells).
There is no shear reinforcement in the slab.
The applied loads is a pressure of 2.05 kg/cm2 on one of the elements.

The reinforcement design code is the ACI 349.

Element types used in the model: SHELL43

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
Shell
Shell Vertex
Reinforced Concrete
ACI 349

Model Statistics
Number of elements 2
Number of nodes 6
Number of civil materials 2
Number of cross sections 0
Number of shell vertices 1

Log file: CFVR0949.DAT


   FINISH
  ~cfclear,,1
   NomFile='CFVR0949'
  /TITLE, %NomFile%, Shell shear reinforcement design according to ACI 349
! ---------------------------------------------------------------------------------
! Model definition and solve
! ---------------------------------------------------------------------------------

! Setup
 ~UNITS,,MONE,EURO
 ~UNITS,,LENG,CM
 ~UNITS,,TIME,S
 ~UNITS,,FORC,KP
 ~CODESEL,,ACI349
 ~CFCONFG,PLRES   ,SHELL   ,EPSW 
 ~CFCONFG,RESULT,CFSHF,1

  /PREP7
! Materials
  ~CFMP,5,LIB,CONCRETE,EC2,C40/50
  ~CFMP,2,LIB,REINF,EC2,S400
! Element types
  ET,2,SHELL43
! Shell Vertex
  t=25     ! Thickness
  r=4      ! Cover
  th = 0   ! Reinforcement angle
 ~SHLRNF,1,t,5,2,r,0.0,0.0,0.0,0.0,0,th,45
 ~SHLSHR,1,2,,12,,,14,14
! Beam & Shell property
 ~BMSHPRO,10,SHELL,1,1,1,1,43,,,,Shell property

! Nodes
  N,10,0,0
  N,20,100,0
  N,30,200,0
  N,40,0,100
  N,50,100,100
  N,60,200,100
! Elements
  MAT,5
  REAL,10
  TYPE,2
  EN,100, 10, 20, 50, 40
  EN,200, 20, 30, 60, 50
! Boundary conditions
  D,10,ALL,0.0
  D,40,ALL,0.0
  D,50,UZ,0.0
! Solve
  /SOLU
  SFE,100,2,PRES,,2.05
  SOLVE

  /POST1
! ---------------------------------------------------------------------------------
! Check with CivilFEM
! ---------------------------------------------------------------------------------
 ~CFSET,,1
 ~DIMCON,SHELL,SHEAR, , , ,1, ,1, , , ,0 ! Phi=0.85 ; fy unlimited 
 ~CFSET,1

!--------------------------------------------------------------------------------------
! DATA CHECK
!--------------------------------------------------------------------------------------
! Data comparison number
  NComp = 7
  NComp_ch = 0

! Matrix 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) = 'VC_X'
  LABEL( 2,1) = 'VS_X'
  LABEL( 3,1) = 'ASSH_X'
  LABEL( 4,1) = 'VC_Y'
  LABEL( 5,1) = 'VS_Y'
  LABEL( 6,1) = 'ASSH_Y'
  LABEL( 7,1) = 'ASSH'

! Correct values
  VALUE( 1,1)=225.68
  VALUE( 2,1)=2.938
  VALUE( 3,1)=8.615E-04
  VALUE( 4,1)=225.68
  VALUE( 5,1)=0.0
  VALUE( 6,1)=0.0
  VALUE( 7,1)=8.615E-04

! Comparison
 ESEL,S,ELEM,,100
 ~PLSHCON,VC_X 
 *GET,VALUE(1,2),NODE,10,EPSW
~PLSHCON,VS_X 
 *GET,VALUE(2,2),NODE,10,EPSW
~PLSHCON,ASSH_X  
 *GET,VALUE(3,2),NODE,10,EPSW
~PLSHCON,VC_Y
 *GET,VALUE(4,2),NODE,10,EPSW
~PLSHCON,VS_Y  
 *GET,VALUE(5,2),NODE,10,EPSW
~PLSHCON,ASSH_Y  
 *GET,VALUE(6,2),NODE,10,EPSW
~PLSHCON,ASSH 
 *GET,VALUE(7,2),NODE,10,EPSW

! Warning and error tolerances
  TOLER( 1,1)= 1E0     $ TOLER( 1,2)= 1E0
  TOLER( 2,1)= 1E0     $ TOLER( 2,2)= 1E0
  TOLER( 3,1)= 1E-03   $ TOLER( 3,2)= 1E-03
  TOLER( 4,1)= 1E0     $ TOLER( 4,2)= 1E0
  TOLER( 5,1)= 1E0	   $ TOLER( 5,2)= 1E0
  TOLER( 6,1)= 1E-03   $ TOLER( 6,2)= 1E-03 
  TOLER( 7,1)= 1E-03   $ TOLER( 7,2)= 1E-03

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

Results

LabelTargetCivilFEMRatioTolerance
VC_X 225.68 225.721.000 1
VS_X 2.938 2.89591.014 1
ASSH_X 0.00086150.000861841.000 0.001
VC_Y 225.68 225.721.000 1
VS_Y 0 00.000 1
ASSH_Y 0 00.000 0.001
ASSH 0.00086150.000861841.000 0.001


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