topic Re: SHELL WITH DIFFERENT SECTION OF INNER AND OUTER SURFACE in Modeling

SHELL WITH DIFFERENT SECTION OF INNER AND OUTER SURFACE

Anonymous — Wed, 24 May 2023 17:00:43 GMT

Hello!

I have 2 questions regarding shell tool:

1. Is there a way to create with a shell tool a shell with different section of its inner and outer surface?
I attached the image of what I'm trying to achieve. It shows a section of a tubular shell. So this section should be somehow extruded/pushed to obtain length.
Should this be done maybe with some other tool than shell tool?

2. When I am trying to do the same thing, only with half a section, I manage to get something close to what I wanted, but the section looks a bit weird, as if something is messed up inside of it.

Thank you in advance!

Re: SHELL WITH DIFFERENT SECTION OF INNER AND OUTER SURFACE

Lingwisyer — Thu, 31 Jan 2019 01:13:58 GMT

You could draw your profile as a Complex Profile then you will be able to define all the surfaces and building materials and associate it to a tool type.

Ling.

Re: SHELL WITH DIFFERENT SECTION OF INNER AND OUTER SURFACE

Laszlo Nagy — Thu, 31 Jan 2019 11:29:29 GMT

Or you could create it using the Morph Tool:

1. In a Section Viewpoint, use the Circle Tool to draw the outer circle and inner ellipse. This was the profile of the Morph will be generated in a vertical plane and you will not have to rotate it in 3D.
2. Use the Rectangular Geometry Method of the Morph, then SPACE-click on the circle to create a Morph face.
3. Select the circular Morph face and SPACE-click the Ellipse to create the hole in it. Please note that the Ellipse will be approximated by curves.
4. Select the resulting Morph Face and use the Push/Pull command of the Pet Palette to extrude it to the desired length.

Re: SHELL WITH DIFFERENT SECTION OF INNER AND OUTER SURFACE

Anonymous — Thu, 31 Jan 2019 11:37:43 GMT

Thank you Ling for your answer!
However I think this is not a good enough solution for me, since I additionally need to modify this extrusion, and as far as I know, it isn't possible to modify it (e.g. cut holes etc. as with shell tool).

Thank you Laszlo for your answer, too!
I think this might be the solution I need, but it seems I can't select the inner ellipse properly. It selects only a circle, which I didn't draw. I drew only inner and outer ellipse.
Do you know what might be the problem here?

Re: SHELL WITH DIFFERENT SECTION OF INNER AND OUTER SURFACE

Anonymous — Thu, 31 Jan 2019 11:43:38 GMT

Here is one more screenshot of what happens when I hover over the morph's face while holding space bar and having morph tool selected. The ellipse at one point shows up, but I can't select it. I can only select the circle.

Re: SHELL WITH DIFFERENT SECTION OF INNER AND OUTER SURFACE

Laszlo Nagy — Thu, 31 Jan 2019 13:00:38 GMT

You need to user CTRL+SHIFT+click to select subelements (such as Edges or Faces) within the Morph geometry.

Re: SHELL WITH DIFFERENT SECTION OF INNER AND OUTER SURFACE

Anonymous — Mon, 04 Feb 2019 13:36:36 GMT

Thank you for your help, but I still can't get it done.
Not sure what I did differently this time, but I managed to choose the inner ellipse right away (I was holding SPACE BAR, with chose MORPH TOOL and chosen MORPH) in order to create a hole in the morph of the outer ellipse.
But when I went to the 3D view and push pulled the morph, it just appeared as extruded form but without the hole.
In the picture I uploaded you can see that something looks weird, as if the ellipses are not in the same plane. But I drew them in the south section, so that should be fine.
Do you have any ideas what to do now?

Thank you in advance!

Re: SHELL WITH DIFFERENT SECTION OF INNER AND OUTER SURFACE

Erwin Edel — Mon, 04 Feb 2019 14:26:43 GMT

Perhaps a polygonal wall can get the job done too (if it's just extruded straight up). You can (as far as I know) put windows in a polygonal wall. You'll have to draw to half segments (semi circle so to speak) to get this to work though.

Re: SHELL WITH DIFFERENT SECTION OF INNER AND OUTER SURFACE

Anonymous — Wed, 20 Feb 2019 16:39:08 GMT

Thank you everyone for your help!
I finally made it the way Laszlo described. I just couldn't do it right at the beginning because I didn't select the circular morph face with the WHITE ARROW, but the black one.