A simple APDL question

[protrader]

I build a volume (volume #1), then I divide it into 2 volumes using working plane. ANSYS deletes volume number 1 and names the 2 new volumes as volume #2 and #3.

I want to delete one of the volumes but I don't want to check the number of volume and simply use VDELE command. I want to use a condition that all the time in any case and any version of APDL, the volume to be deleted is selected.

FYI I am in the building geometry step and there is no mesh, no nodes and no elements.

Is there any way to do this? Or is this a common way that programmers check the number of the volume then they use it in the future commands (e.g. I check the number of volumes and the one that I want to delete is number 3, so I simply use VDELE,3 in the next line of my input file)

 

[TGS4]

Simple - don't use the volume numbers. In fact, it is highly recommended to not use entity numbers, period.

Select the volume that you wish to delete using the vsel commands. Then, vdele,all.

 

[Struct71]

Hi,

* You can set some options using the BOPTN commands.

* You can select volumes by selecting keypoints and then a series of LSLK, ASLL and VSLA commands.

* You can check the number of the newly generated volume by puting VSEL,NONE before and VVV=VLNEXT(0)after the command.

 

[protrader]

How Can we get the number of a KP knowing its coordinates. e.g. when we create a rectangle with BLC4 it creates an area with 4 KP. Now we know the KP coordinates but how can we get the number of them?

 

[Struct71]

KSEL,s,loc,x,...
KSEL,r,loc,y,...
KSEL,r,loc,z,...
KKK=kpnext(0)

 

[protrader]

I found the simplest function:

KKK=KP(x,y,z)