Dear Meikanth,

In APDL, You must select everything before solving it!

In your code, at the last step only the nodes nsel,r,loc,z,a/2 are selected. Ansys does not solve only these nodes. So, if you add "ALLSEL" coomand at the end of your code, system becomes solvable.

In addition, always try to prepare your code without using log file. ( your code includes mouse selections like FITEM etc. )

You can use the following code for your last part :

!Load_1

nsel,r,loc,z,a/2

*get,node_count,node,0,count

q=5833.3

b=(Ra*Angle*0.017453)

f_node=(q*b*0.125)/(node_count-1)

F,all,FX,f_node

!Load_2

f_node2=(q*b*0.992)/(node_count-1)

F,all,FY,f_node2

ALLSEL

SOLVE

Regards,

Gökçe

Dear Meikanth,

Have you defined the variable Ra for radius?

Also, use nsel,all before nsel,r,......

Are you trying to apply circumferential load? Why are you assuming same orientation of the load (at 7.2 deg) at all nodes? You can use cylindrical SYS and define one load accordingly for circumferential load.

Regards,

Chandrashekhar

Dear Chandrashekhar,

Thanks for your response.

Yes I did defined all the particulars. I am applying line load for the curved rectangular plate at its middle (half of width) portion along the length.

And, 17.2 degree is at which plate is bent to get the required arch length of 270 for the plate.

I have applied two load components horizontal and vertical separately for individual nodes.

Kindly, find below the entire code for the model,

finish

/clear,all

Angle=17.2

Ra=900

a=350

!*

/PREP7

!*

ET,1,SHELL281

!*

MPTEMP,,,,,,,,

MPTEMP,1,0

MPDATA,EX,1,,206000

MPDATA,PRXY,1,,0.3

MPTEMP,,,,,,,,

MPTEMP,1,0

MPDATA,DENS,1,,0.0000769

sect,1,shell,,shell

secdata,30,1,0.0,3

secoffset,MID

seccontrol,,,, , , ,

K,1,,,,

FLST,2,2,8

FITEM,2,0,0,0

FITEM,2,Ra,0,0

CIRCLE,P51X, , , ,Angle, ,

FLST,3,1,4,ORDE,1

FITEM,3,1

LGEN,2,P51X, , , , ,a, ,0

LSTR, 5, 3

LSTR, 4, 2

FLST,2,4,4

FITEM,2,2

FITEM,2,1

FITEM,2,3

FITEM,2,4

AL,P51X

CM,_Y1,LINE

CMSEL,,_Y

!*

LESIZE,_Y1,35, , , , , , ,1

!*

MSHKEY,0

CM,_Y,AREA

ASEL, , , , 1

CM,_Y1,AREA

CHKMSH,'AREA'

CMSEL,S,_Y

!*

AMESH,_Y1

/SOL

FLST,2,4,4,ORDE,2

FITEM,2,1

FITEM,2,-4

!*

/GO

DL,P51X, ,UZ,

FLST,2,4,4,ORDE,2

FITEM,2,1

FITEM,2,-4

!*

/GO

DL,P51X, ,UY,

FLST,2,4,4,ORDE,2

FITEM,2,1

FITEM,2,-4

!*

/GO

DL,P51X, ,UX,

nsel,all

!Load_1

nsel,r,loc,z,a/2

*get,node_count,node,0,count

q=5833.3

b=(Ra*Angle*0.017453)

f_node=(q*b*0.125)/(node_count-1)

F,all,FX,f_node

!Load_2

nsel,r,loc,z,a/2

*get,node_count,node,0,count

q=5833.3

b=(Ra*Angle*0.017453)

f_node=(q*b*0.992)/(node_count-1)

F,all,FY,f_node

If I apply the same loads by selecting individual nodes, Ansys can solve the problem. But, not sure why isn't solving with code inputs. Would be grateful, if you help to fix the issue.

Thanks

The only possibility remains then is the command nsel,r,loc,z,a/2 is incorrect. In other words, the intended nodes on which force need to be applied are not located at z=a/2.

Check the co-ordinates of the nodes to be selected and update nsel command accordingly.

Regards,

Chandrashekhar

Thanks for response,

The plate horizontal direction is on z axis, as the line load needs to be applied at center of z which is mid of breadth 'a'. so, a/2. As you can see from picture the nodes at mid region the loads applied are properly only issue is it not solving. If I give same loads individually by selecting nodes it solving the model.

So, not sure what need to be add extra.

Dear Meikanth,

In APDL, You must select everything before solving it!

In your code, at the last step only the nodes nsel,r,loc,z,a/2 are selected. Ansys does not solve only these nodes. So, if you add "ALLSEL" coomand at the end of your code, system becomes solvable.

In addition, always try to prepare your code without using log file. ( your code includes mouse selections like FITEM etc. )

You can use the following code for your last part :

!Load_1

nsel,r,loc,z,a/2

*get,node_count,node,0,count

q=5833.3

b=(Ra*Angle*0.017453)

f_node=(q*b*0.125)/(node_count-1)

F,all,FX,f_node

!Load_2

f_node2=(q*b*0.992)/(node_count-1)

F,all,FY,f_node2

ALLSEL

SOLVE

Regards,

Gökçe

Thank you so much Mr. Gökçe Akgün.