Learning Forum

[VKant]

Hi guys!

I want to shape a "BEAM188 element" with a cross-section like this (Ansys APDL):

[Ashish Khemka]

Please see if the following video helps:

Ansys: Beam with variable cross section - Bing video

Regards Ashish Khemka

[VKant]

Hi thanks for your reply.
Unfortunately i don't need a tapered beam but a model with a custom cross section.
I tried to write a code for my custom section:
fini $ /clear $ /prep7
b=210
h=300
t1=4
t2=3
k,1,0,0
k,2,b,0
k,3,b,h
k,4,0,h
k,5,t1,t1
k,6,b-t1,t1
k,7,b-t1,h/2
k,8,b-t2,h/2
k,9,b-t2,h-t2
k,10,t2,h-t2
k,11,t2,h/2
k,12,t1,h/2
*do,i,1,3
l,i,i+1
*enddo
l,4,1
*do,i,5,11
l,i,i+1
*enddo
l,12,5
lsel,all
lesize,all,10
al,all
Then i saved this code in a library and I assigned it to a BEAM188 element with SECREAD. Now it seems to work but i have a new problem with the postprocessing.
I can see the displaced structure without problems but when i go for stress results a textbox says "The requested S data is not available". How can i fix it?
Regards

[VKant]

Hi thanks for your reply.
Unfortunately I don't need a tapered beam, i'm making a beam with a custom cross section.
I tried to write a code to model a custom section:
fini $ /clear $ /prep7
b=210
h=300
t1=4
t2=3
k,1,0,0
k,2,b,0
k,3,b,h
k,4,0,h
k,5,t1,t1
k,6,b-t1,t1
k,7,b-t1,h/2
k,8,b-t2,h/2
k,9,b-t2,h-t2
k,10,t2,h-t2
k,11,t2,h/2
k,12,t1,h/2
*do,i,1,3
l,i,i+1
*enddo
l,4,1
*do,i,5,11
l,i,i+1
*enddo
l,12,5
lsel,all
lesize,all,10
al,all
Then i saved it with SECWRITE and assigned to a BEAM188 element with SECREAD.
Now it seems to work, but i have a new problem with the postprocessing.
I can see the displaced structure but when i go for stress results a textbox says "The requested S data is not available". How can i fix it?
Regards

[Ashish Khemka]

Try issuing outres,all,all before solving.

Regards Ashish Khemka

[VKant]

I just tried and it's not workingAPDL freezes after running "Solve". I never had these kind of problems with previous releases, probably i'm missing something.

[VKant]

Ok, now has stopped freezing but the result is the same sadly.

[Ashish Khemka]

Can you end the current session and start with a new one? If the issue still persists then please create a new discussion.

Regards Ashish Khemka

[VKant]

I did it but the problem persists. I'll create a new topic.
Thanks