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Making drumlin shapes / rounded mounds in C3D

12 REPLIES 12
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Message 1 of 13
ErikBjerkelund1011
1356 Views, 12 Replies

Making drumlin shapes / rounded mounds in C3D

Hello all.
I am trying to model earthworks into drumlin / rounded mounds. It will be in a play area. I have made a trial using feature lines that I have used as centre and graded on the right/left sides. See image attached.

The result as shown is not the nice rounded, flowing shapes that I am looking for. How do I model this in C3D?
I have been thinking should I use alignments and assemblies however that seems hard to control. There must be an easier way...?

Any creative thoughts welcome!

Regards
Erik
12 REPLIES 12
Message 2 of 13

Apply surface smoothing. The Smooth Surface command is located in the surface's Edits shortcut menu.
David Zavislan, P.E. | Wood Rodgers, Inc.
Message 3 of 13
Anonymous
in reply to: ErikBjerkelund1011

Sometimes you just have to draw the shape you want with contours.
Message 4 of 13
tpivo
in reply to: ErikBjerkelund1011

I would use AutoCad's 3D Modeling Commands to create a more organic shape.
Then convert to a surface if you need it in C3D.

tpivo
Core i7 920
Vista/C3D2011 64bit
Message 5 of 13
Anonymous
in reply to: ErikBjerkelund1011

I was thinking along those lines but I didn't know you could convert ACAD
surfaces to C3D surfaces. How is that done?
Message 6 of 13
Anonymous
in reply to: ErikBjerkelund1011

One way to get a pseudo mound is to create several alignments and profiles
that cross the mound in a radial fashion and generate feature lines from
them. Then add them as breaklines to a surface. The more you create the
better the results but it makes for more work to manipulate and keep
everything synchronized.
Message 7 of 13

I might draw a Featureline that represents the cross section of the mound the copy/rotate it a number of times to form a mound.
Allen


Allen Jessup
Engineering Specialist / CAD Manager

Message 8 of 13
tpivo
in reply to: ErikBjerkelund1011

Not sure of a direct way, But you
1. could make a mesh, solid or surface.
2. Export to r12 dxf
3. Import dxf into C3D
4. Create surface from breaklines

That worked on a simple model I used.
Good luck.

tpivo
Core i7 920
Vista/C3D2011 64bit
Message 9 of 13
tpivo
in reply to: ErikBjerkelund1011

here's the sample I used.
Message 10 of 13

Thank you all! Various good and interesting starting points here. As a landscape architect I find I am often looking for more organic and flowing shapes.

What about having a "Pamela" function with which one might enlarge and reduce organic shapes according to need, and, and....
Message 11 of 13
Anonymous
in reply to: ErikBjerkelund1011

Are you looking for something like shown in attached?
Message 12 of 13

I played with meshes and made a cone look like this, and I am looking to add more of these next to each other and with that will be able to illustrate my intentions. If they are to be built, i will have to put the right image into the head of the operator of the machine. Again Thanks!
Message 13 of 13
Anonymous
in reply to: ErikBjerkelund1011

Once you have the meshes as you like them you can explode them into 3D faces
and add them to a surface. Then they can be imported into their machine
controls for construction.



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