Learning Forum

[Mehdi Baghaee]

How is it possible to get the position of some arbitrary selected nodes (e.g. attached to a specific area) within an array in apdl?

Note that *VGET, NPOSX, NODE,  1, LOC,  X command returns the position of whole nodes (in successive mode) instead of the selected ones.

[Harshvardhan]

Hi,
The  APDL command *VGET is executed on the previously selected entities. So if you have selected a group of nodes, and you need location of any one node, you will first need to resect that node so that only that node is selected and then run the *VGET command.

Regards,
Harshvardhan
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[Mehdi Baghaee]

 

 

Just to say that it does not work. I dont know why it returns the location of all nodes instead of the selected ones.

You could check it through my following codes which returns a 484*1 array instead of 18*1 array.

/BATCH  
/input,menust,tmp,”
WPSTYLE,,,,,,,,0
/NOPR   
KEYW,PR_SET,1   
KEYW,PR_STRUC,1 
KEYW,PR_THERM,0 
KEYW,PR_FLUID,0 
KEYW,PR_ELMAG,0 
KEYW,MAGNOD,0   
KEYW,MAGEDG,0   
KEYW,MAGHFE,0   
KEYW,MAGELC,0   
KEYW,PR_MULTI,0 
/GO 
/PREP7  
ET,1,SOLID185   
MPTEMP,,,,,,,,  
MPTEMP,1,0  
MPDATA,EX,1,,1e9
MPDATA,PRXY,1,,.3   
MPTEMP,,,,,,,,  
MPTEMP,1,0  
MPDATA,DENS,1,,6700 
BLOCK,0,10,0,10,0,1,
FLST,5,8,4,ORDE,2   
FITEM,5,1   
FITEM,5,-8  
CM,_Y,LINE  
LSEL, , , ,P51X 
CM,_Y1,LINE 
CMSEL,,_Y   
LESIZE,_Y1, , ,10, , , , ,1 
MSHAPE,0,3D 
MSHKEY,1
CM,_Y,VOLU  
VSEL, , , ,       1 
CM,_Y1,VOLU 
CHKMSH,’VOLU’   
CMSEL,S,_Y  
VMESH,_Y1   
CMDELE,_Y   
CMDELE,_Y1  
CMDELE,_Y2  
WPSTYLE,,,,,,,,0
FLST,2,44,1,ORDE,12 
FITEM,2,1   
FITEM,2,-11 
FITEM,2,122 
FITEM,2,143 
FITEM,2,153 
FITEM,2,-161
FITEM,2,243 
FITEM,2,-244
FITEM,2,267 
FITEM,2,-268
FITEM,2,287 
FITEM,2,-304
/GO 
D,P51X,ALL, , , , , , , , , ,   
ANTYPE,4
TRNOPT,FULL 
LUMPM,0
ASEL,S,AREA,,6  
APLOT, 
NSLA, S, ALL
*VGET, NAPOSX, NODE,  ALL, LOC,  X
FINISH  

Any suggestion?