How to get volume of a 2D model without rotating it?

[Anonymous]

Hello,

I have a irregular 2D model and need to find the volume of it when I rotate it about the center line.

Is anyone aware on how to do it without converting the drawing into a 3D, by using any add-ins or ....?

[JoAnn_Hogan]

You will have to do it manually. If you want to you can post the drawing here and I will quickly convert it and send you the steps

[Alfred.NESWADBA · Accepted solution]

Hi,

>> s anyone aware on how to do it without converting the drawing into a 3D

You can take your schoolbooks and read about how to calculate it by hand 😉

But what is the problem, to start command _REVOLVE, create the 3D-object from the 2D-contour (closed polyline) get it's volume (command _MASSPROP) then run _UNDO and that's it.

- alfred -

[JoAnn_Hogan · Accepted solution]

If you dont have 3D experience it gets quite tricky. Especially in AutoCAD. If I can see what type of model you need I could tell you exactly how to create the 3D. Then You can do what Alfred suggested and get the volume and undo afterwards

[Anonymous]

Hi JoAnn,

Thanks for offering to help.

Unfortunately, I would not be able to upload it, as it is protected. Anyway, I have solved it.

[Anonymous]

Thanks Alfred.

[JoAnn_Hogan]

Glad we could help 😃

[JDMather]

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@Anonymous wrote:

Hello,

I have a irregular 2D model and need to find the volume of it when I rotate it about the center line.

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Run the Polyline Edit (PE J)command with Join option (or the Join command).

Follow the command line to join the boundary together.

Run the Area (AA O) command with the Object option to get the area.

Post the area results here (simply a number, no proprietary data needed).

Indicate the degrees of revolution.

Someone here will do the math for you.