how to model dome with turrets

[chow choppe]

how to model this kind of a dome in autocad. its dome with turrets

 

 

I am using autocad 2004

 

Thanks

[JamesTaylor]

thats going to be a heavy mesh in AutoCAD... if you have it available i'd look towards max / viz or a similar app for modelling the dome elements and then just align them as required to your AutoCAD model.

 

If it has to be done in CAD i think you need to have a look at the "edgesurf" command and model the domes as surfaces rather than solids. Looking in the help file will explain it better than i can in a few lines.

[chow choppe]

i know it can be modelled using scale deformation in loft command if making in max

but i want to know how to make it in autocad. i cudn't understand how edge surf can generate this

[Chad Warner]

You'd have to set up each segment of the lower part of dome as an edge surf, then polar array to make the lower half. Then do the same for the upper portion. So it would end up being built out of multiple edge surfs.

[chow choppe]

sorry chad

can u put up some screenshots to explain

i am not able to understand it

 

Thanks

[Chad Warner]

sorry chad

can u put up some screenshots to explain

i am not able to understand it

 

Thanks

 

Sure. Here you go. Here's the base of the dome, you'd just need to repeat on the top part.

[chiquito]

Give a try to have a star shape. have a fillet radius until satisfied.

Extrude lets say N amount with 10 sements. Apply a FFD4x4 modifier, scale the upper and lower nodes, voilá.

If not, I agree with previous post. Have one piece, a shape lofted through a spline, and have the pivot point of that arranged to your center, make the amount of copies needed.

[chow choppe]

thanks chad

but the upper portion's arc curve is in continuation with the lower one ( in elevation} . i just hope that u will not see a divison between the upper and lower portion which otherwise has to look like a continuous curve from top to bottom

 

And "Chiquito" can u put up some screenshots to explain ur methof of modelling it in max

 

Thanks

[JamesTaylor]

thanks chad

but the upper portion's arc curve is in continuation with the lower one ( in elevation} . i just hope that u will not see a divison between the upper and lower portion which otherwise has to look like a continuous curve from top to bottom

 

thats simply a case of drawing your curves correctly and spend a few minutes drawing it well to begin with, i'm pretty sure chad has just thrown this together quickly with little precise thought as to the shapes used to illustrate the process.

[bigroo]

What about creating a profile of the dome with lines & arcs (plines) & using the revsurf command rotate around an axis to achieve this. I'm sure it is possible in Acad2004.

[chiquito]

I attach some screen grabs, I hope it helps. Not so sure that the star shape is the best option, but, if you just edit it, it should work fine, and quick.