Learning Forum

[Quirin Hoesch]

Hi all,

I use the following APDL-Code to model a quarter torus with fiber reinforcements within t3D continuum elements (SOLID186). The orientation of the reinforcements (Smeared modelling approach with REINF 265 Elements) should vary over the cross-section from 5 to 90 degrees. Somehow ANSYS gives me problems using the EREINF command, so that all elements adopt the orientation of the last defined reinforcing elements. In this case 90 degrees. Can anyone help me? Does this approach work at all?

The background of the question is, that in future a toroidal helix should be modelled, to simulate fibre-reinforced pressurized hoses in which the winding angle changes over the arc length.

!====================================================================== 

!==================        Start of Input Deck        ================= 

!====================================================================== 

fini

/clear,all  

/prep7

!====================================================================== 

!===                          Parameter                             ===

!====================================================================== 

*SET,ro,24/2  

*SET,Do,ro*2

*SET,ri,20/2 

*SET,Di,ri*2

*SET,t,ro-ri

*SET,rm,(ro+ri)/2

*SET,rk,50

 

*SET,Emodul,750

*SET,nu,0.4 

*SET,pressure,1

*SET,Emodul_faser,Emodul*100 

*SET,nu_faser,nu 

*SET,wickelwinkel,60 

*SET,wickelwinkel_rad,wickelwinkel*3.14159265359/180 

 

 

!====================================================================== 

!===                         Materials            === 

!====================================================================== 

mp,  ex,1,Emodul  ! Base Material

mp,  ex,2,Emodul_faser ! Reinforcing Material

mp,prxy,1,nu

mp,prxy,2,nu_faser

!====================================================================== 

!===                                    Geometry                    === 

!====================================================================== 

 

k,1,rk,0,0

k,2,0,rk,0 

k,3,0,0,0

LARC,1,2,3,rk

 

wprota,0,90,0

cyl4,rk,0,ri,0,ro,180

wprota,0,-90,0

 

vdrag,1,,,,,,1

!====================================================================== 

!===                      Elements               === 

!====================================================================== 

et,1,SOLID186

mat,1

!====================================================================== 

!===                 Meshing                                        === 

!====================================================================== 

 

esize,2.2 

vmesh, 1

 

!====================================================================== 

!===                  SYMMETRY-BC                === 

!======================================================================

local,11,3,0,0,0,0,0,0,rk ! Erzeugt ein lokales Koordinatensystem - Toruskoordinaten mit einem Radius rk

 

 

! SYMMETRIE_RB POLOIDAL

asel,s,,,3

asel,a,,,5

nsla,s,1

nrotat,all

d,all,uz,0

ALLSEL,ALL

 

!====================================================================== 

!===                  BC                                    === 

!====================================================================== 

Csys,11 ! Cylindrical with the global Cartesian z as the axis of rotation

asel,s,,,1

nsla,s,1

nrotat,all

 

d,all,ux,0

d,all,uy,0

d,all,uz,0

 

ALLSEL,ALL

 

!====================================================================== 

!===                        REINFORCEMENTS                          ===

!====================================================================== 

 

*DO,i,1,18,1

*SET,j,5*i

*SET,wickelwinkel,j

sect,1,REINF,SMEAR

secd,2,0.5,1.0,,wickelwinkel,ELEF,1,0.5

esel,all

*SET,startElem,i

*SET,endElem,793+i

esel,s,,,startElem,endElem,18

EREINF

*ENDDO

 

Thank you very much for your help!

[Ashish Khemka]

Hello,

I do not have expertise in this area but please see if the following forum threads help you:

Issues with EREINF and reinf264 (ansys.com)

REINF264 shows wrong results (ansys.com)

Regards,

Ashish Khemka

[Thomas Hirche]

Hi Quirin,

Ansys Composite PrepPost in Release 24R2 has the capability of creating solid models with reinforcing elements. You can use those in conjunction with either 1.) the newly released winding wizzard, 2.) supported filament winding tools where you can import layup data through HDF5 interface, 3.) create Look Up Tables which contain all data to define material orientations by your very own method.

Reinforcing ELements in ACP: 2.1.16.2. Imported Solid Model (ansys.com)

HDF5 data import: 2.3.1. HDF5 Composite CAE Format (ansys.com)

Look Up Tables: 2.1.7. Look-Up Tables (ansys.com)

I'd like to advice to create a Service Request if you need further Help. 

 

Regards

Thomas