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How to simulate torsion of cylinder in ANSYS?

Submitted by sspadhee on

I want to model torsion of a homogeneous hollow cylinder in ANSYS. I changed to cylindric coordinate system also. But each time I run the program  the result is that of bending. I have attached the mac file and output file for reference. Please advise.

 

 

finish

/clear

/PREP7  

!*  

ET,1,SOLID92

!*  

!*  

MPTEMP,,,,,,,,  

MPTEMP,1,0  

MPDATA,EX,1,,70e9   

MPDATA,PRXY,1,,0.3  

CSYS,1  

CYL4,0,0,1, ,2, ,10 

/USER,  1   

/VIEW,  1, -0.308622066883    ,  0.922501876538E-01,  0.946700756687

/ANG,   1,  -1.01797039482  

/REPLO  

/DIST,1,1.08222638492,1 

/REP,FAST   

/DIST,1,1.08222638492,1 

/REP,FAST   

/DIST,1,1.08222638492,1 

/REP,FAST   

TYPE,   1   

MAT,       1

REAL,   

ESYS,       0   

SECNUM, 

!*  

MSHAPE,1,3D 

MSHKEY,0

!*  

ESIZE,.1,0,  

 

 

There are many approaches to simulating the torsion of a model in ANSYS.

Please see the code below (MPC method)

 

 

/PREP7

ET,1,95

et,2,184

keyopt,2,1,1

R,1,1E-6

MP,EX,1,2.01e5

MP,PRXY,1,0.3



CYLIND,15,10,0,200,0,360,

wpro,,90,

vsbw,all

wpro,,,90

vsbw,all

WPCSYS,-1,0

K,17 , , ,210

lsel,s,,,13,16,1

lesize,all, , ,8, , , , ,1

lsel,s,,,22

lesize,all, , ,4, , , , ,1

lsel,s, , ,17,20,1

lsel,a, , ,26,27,1

lsel,a, , ,30,31,1

lesize,all, , ,20,0.4, , , ,1

alls

vmesh,all

nsel,s,loc,z,200

n,15000 ,0,0,210

type,2

*get,nnum,node,0,count

*get,ND,node,0,num,min

*do,i,2,nnum

E, 15000,ND

ND=NDNEXT(ND)

*enddo

allsel

/SOLU

f,node(0,0,210),mz,10e5

nsel,s,loc,z,0

d,all,all

allsel

solve



 

Thu, 12/16/2010 - 01:33 Permalink