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Message 1 of 5 (907 Views)

# calculate the three-dimensional surface by autocad 2007

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11-11-2012 02:55 AM

How to calculate the three-dimensional surface of a revolved arch by autocad 2007? such as an irreular dome

Which software can do the job? Autocad or Matlab software or .....

a three-dimensional surface is defined by 3 parameter such as x^3+2y^2-5z^3=0

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Message 2 of 5 (878 Views)

# Re: calculate the three-dimensional surface by autocad 2007

11-13-2012 03:22 PM in reply to: toiserkany

Something like this?  I am confused by your terms surface and solid and never really mentioned the word area.

Also the axis of rotation was not connected to your arc in your image?

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Message 3 of 5 (862 Views)

# Re: calculate the three-dimensional (3D) surface area by autocad 2007 or Later

11-13-2012 11:46 PM in reply to: JDMather

thanks alot : totally , the position of the rotation axis is not important . My  main purpose is , calculating the outer area of a dome surface , which is made  when an arc revolved around an axis in 3D space.

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Message 4 of 5 (836 Views)

# Re: calculate the three-dimensional (3D) surface area by autocad 2007 or Later

11-16-2012 06:18 AM in reply to: toiserkany

Perhpas my approach isn't as accurate as you might like but...

I modeled the dome and used solidedit to shell the solid, removing the bottom face and entering a really thin wall thickness. I used massprop to get the volume and divided that value by 2

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Message 5 of 5 (825 Views)

# Re: calculate the three-dimensional (3D) surface area by autocad 2007 or Later

11-17-2012 02:44 AM in reply to: xboxphili

hello and thanks very much for your notice: Excuse me , but is it possible , explain more and exact?  I do not know your idea about , (shell the solid, and removing the bottom facuse mece). what do i do  exactly ?

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