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Torsionnal stress with BEAM 44.
 
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alexandre.meli
User


Joined: 23 Oct 2012
Posts: 64
Location: FRANCE

PostPosted: Thu Dec 13, 2012 12:46 am  Reply with quote

Hello everybody, I currently make little model in beam 44. But I can't have the torsionnal stress.
This is my model.

FINI
/CLEAR

/FILENAM,BEAM188_44

/PREP7

!Keypoint

K,1,0,0,0
K,2,500,0,0
K,3,1250,0,0
K,4,1500,0,0


!POur effort déporté
K,10,KX(3),KY(3)+10,KZ(3)
K,11,KX(3),KY(3)+350,KZ(3)

!Keypoint d'or
K,100,0,0,-250

!Line
LSEL,NONE
L,1,2
L,2,3
L,3,4
CM,poutre,LINE

LSEL,NONE
L,3,10
L,10,11
CM,rigide,LINE

ALLSEL,ALL
CMSEL,ALL

!/EOF
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!MATERIAU____________________________________________________________________
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!Cornière L150x75x9
!MP,DENS,1,7850e-12*2.2
!MP,NUXY,1,0.3
!MP,EX,1,210000

!Cornière L150x75x9 en beam 44
MP,DENS,50,7850e-12*2.2
MP,NUXY,50,0.3
MP,EX,50,210000




!ELEMENT RIGIDE

!MP,DENS,1,7850e-12
MP,NUXY,100,0.3
MP,EX,100,210000*100

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!Real de la section!!!!!!!!!!!!!




R, 50 , 1944.0 ,0.51280E+06,0.48775E+07, 66.911 , 29.243 , 52802 !+6 52802
RMORE, 1944.0 ,0.51280E+06,0.48775E+07, 66.911 , 29.243 , 52802 !12
RMORE, 0.0000 ,-.17764E-14,0.13323E-14, 0.0000 ,-.17764E-14 ,0.13323E-14 !18
RMORE, 3.4704 , 1.7552 , 97.384 , 45.533 , 97.384 , 45.533 !24
RMORE, 1350 , 675 , 1350 , 675 , 0.11 , 0.11 !30
RMORE,-42.892 ,-23.502 ,-42.892 ,-23.502 , 0.0000 , 0.0000 !36
RMORE, 0.0000 , 0.0000 , 0.0000 , 0.0000 , 0.0000 , 0.0000 !42
RMORE, 0.0000 , 0.0000 , 0.0000 , 0.0000 , 0.0000 , 0.0000 !46
RMORE, 0.0000 , 0.0000 , 0.0000 , 0.0000 , 14.991 , 0.0000 !52

!R,50,1000*100,100000*100,100000*100,2,2,0
!RMORE,0,100000*100,0,0,0,0


!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!Element_____________________________________________________________________
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!Cornière L150x75x9
!ET,1,BEAM188
!KEYOPT,1,4,0 !Shear stress output : 0(default):only torsion 1:only flexure -related transverse-shear stress 2:comvined of 2 previous

ET,50,BEAM44
KEYOPT,50,2,0

!ET,50,BEAM4
!KEYOPT,50,2,0


!ELEMENT RIGIDE
ET,100,BEAM4

!SECTION____________________________________________________________________



!Section rigide
SECTYPE,100,BEAM,ASEC
SECOFFSET,CENT
SECDATA,10e6,10e8,,10e8,10e10,10e8,50e5,50e5,50e5,50e5,10e5,10e5





!ELEMENT RIGIDE
R,100,1000*100,100000*100,100000*100,2,2,0
RMORE,0,100000*100,0,0,0,0




!Maillage de la poutre

ALLSEL,ALL
CMSEL,ALL
CMSEL,S,poutre
ESIZE,500
LATT,50,50,50,,100
!LATT,50,,50,,100,,50
LMESH,ALL




ALLSEL,ALL
CMSEL,ALL
CMSEL,S,rigide
ESIZE,,1
LATT,100,100,100!,,,,100
LMESH,ALL


!Données d'entrées

ALLSEL,ALL
CMSEL,ALL
KSEl,S,,,11
NSLK
F,ALL,FZ,-1500


!Blocage de la structure

ALLSEL,ALL
CMSEL,ALL
KSEl,S,,,1
NSLK
D,ALL,ALL




/GTYPE,,LINE,1
/GTYPE,,NODE,0
/GTYPE,,ELEM,0
/PNUM,KP,1
/ESHAPE,0

!/EOF
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!Résolution !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
ALLSEL,ALL
CMSEL,ALL

!ACEL,,,9810

/SOLU

ANTYPE,STATIC
SOLVE
SAVE
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!Post !!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

/POST1

/ESHAP,1
PLNS,S,EQV

SAVE


__________________________________________
End of the model

In the post tretment, I can't have the torsionnal stress when i use /esh,1.
Do I miss something in the real constant 50 ?
For example, I make the same model in BEAM 188, the torsionnal stress is taka into account.

Thanks a lot for your answer.
_________________
alexandre meli
Calculation engineer
EPRI 2+2
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akbey.kalkan
User


Joined: 21 Oct 2008
Posts: 6

PostPosted: Thu Dec 13, 2012 7:10 am  Reply with quote

Alexandre

You need to add SET,LAST before PLNS,S,EQV.

--Akbey Kalkan
Jacobs Engineering UK

________________________________
From: xansys-bounces@xansys.org on behalf of alexandre.meli
Sent: Thu 13/12/2012 7:46 AM
To: xansys@xansys.org
Subject: [Xansys] Torsionnal stress with BEAM 44.


Hello everybody, I currently make little model in beam 44. But I can't have the torsionnal stress.
This is my model.

FINI
/CLEAR

/FILENAM,BEAM188_44

/PREP7

!Keypoint

K,1,0,0,0
K,2,500,0,0
K,3,1250,0,0
K,4,1500,0,0


!POur effort déporté
K,10,KX(3),KY(3)+10,KZ(3)
K,11,KX(3),KY(3)+350,KZ(3)

!Keypoint d'or
K,100,0,0,-250

!Line
LSEL,NONE
L,1,2
L,2,3
L,3,4
CM,poutre,LINE

LSEL,NONE
L,3,10
L,10,11
CM,rigide,LINE

ALLSEL,ALL
CMSEL,ALL

!/EOF
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!MATERIAU____________________________________________________________________
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!Cornière L150x75x9
!MP,DENS,1,7850e-12*2.2
!MP,NUXY,1,0.3
!MP,EX,1,210000

!Cornière L150x75x9 en beam 44
MP,DENS,50,7850e-12*2.2
MP,NUXY,50,0.3
MP,EX,50,210000




!ELEMENT RIGIDE

!MP,DENS,1,7850e-12
MP,NUXY,100,0.3
MP,EX,100,210000*100

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!Real de la section!!!!!!!!!!!!!




R, 50 , 1944.0 ,0.51280E+06,0.48775E+07, 66.911 , 29.243 , 52802 !+6 52802
RMORE, 1944.0 ,0.51280E+06,0.48775E+07, 66.911 , 29.243 , 52802 !12
RMORE, 0.0000 ,-.17764E-14,0.13323E-14, 0.0000 ,-.17764E-14 ,0.13323E-14 !18
RMORE, 3.4704 , 1.7552 , 97.384 , 45.533 , 97.384 , 45.533 !24
RMORE, 1350 , 675 , 1350 , 675 , 0.11 , 0.11 !30
RMORE,-42.892 ,-23.502 ,-42.892 ,-23.502 , 0.0000 , 0.0000 !36
RMORE, 0.0000 , 0.0000 , 0.0000 , 0.0000 , 0.0000 , 0.0000 !42
RMORE, 0.0000 , 0.0000 , 0.0000 , 0.0000 , 0.0000 , 0.0000 !46
RMORE, 0.0000 , 0.0000 , 0.0000 , 0.0000 , 14.991 , 0.0000 !52

!R,50,1000*100,100000*100,100000*100,2,2,0
!RMORE,0,100000*100,0,0,0,0


!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!Element_____________________________________________________________________
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!Cornière L150x75x9
!ET,1,BEAM188
!KEYOPT,1,4,0 !Shear stress output : 0(default):only torsion 1:only flexure -related transverse-shear stress 2:comvined of 2 previous

ET,50,BEAM44
KEYOPT,50,2,0

!ET,50,BEAM4
!KEYOPT,50,2,0


!ELEMENT RIGIDE
ET,100,BEAM4

!SECTION____________________________________________________________________



!Section rigide
SECTYPE,100,BEAM,ASEC
SECOFFSET,CENT
SECDATA,10e6,10e8,,10e8,10e10,10e8,50e5,50e5,50e5,50e5,10e5,10e5





!ELEMENT RIGIDE
R,100,1000*100,100000*100,100000*100,2,2,0
RMORE,0,100000*100,0,0,0,0




!Maillage de la poutre

ALLSEL,ALL
CMSEL,ALL
CMSEL,S,poutre
ESIZE,500
LATT,50,50,50,,100
!LATT,50,,50,,100,,50
LMESH,ALL




ALLSEL,ALL
CMSEL,ALL
CMSEL,S,rigide
ESIZE,,1
LATT,100,100,100!,,,,100
LMESH,ALL


!Données d'entrées

ALLSEL,ALL
CMSEL,ALL
KSEl,S,,,11
NSLK
F,ALL,FZ,-1500


!Blocage de la structure

ALLSEL,ALL
CMSEL,ALL
KSEl,S,,,1
NSLK
D,ALL,ALL




/GTYPE,,LINE,1
/GTYPE,,NODE,0
/GTYPE,,ELEM,0
/PNUM,KP,1
/ESHAPE,0

!/EOF
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!Résolution !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
ALLSEL,ALL
CMSEL,ALL

!ACEL,,,9810

/SOLU

ANTYPE,STATIC
SOLVE
SAVE
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!Post !!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

/POST1

/ESHAP,1
PLNS,S,EQV

SAVE


__________________________________________
End of the model

In the post tretment, I can't have the torsionnal stress when i use /esh,1.
Do I miss something in the real constant 50 ?
For example, I make the same model in BEAM 188, the torsionnal stress is taka into account.

Thanks a lot for your answer.

------------------------
alexandre meli
Calculation engineer
www.eureka-project.fr







________________________________
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________________________________
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alexandre.meli
User


Joined: 23 Oct 2012
Posts: 64
Location: FRANCE

PostPosted: Sat Dec 15, 2012 2:23 am  Reply with quote

Hello everybody,
I find the answer to my question. In my real constant, I had to put real constant 29 and 30 different from 0 in order to take into account the torsional moment.
In fact , we had to enter the torsionnal stress factor which is the factor v/Ixx.

If you have some questions about this element you can tell me.

Best regards.
_________________
alexandre meli
Calculation engineer
EPRI 2+2
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