Problem with a submarine

[levimfa]

Hello everyone!

 

I'm trying to modeling this Typhoon submarine on autocad 2009:

 

 

But I'm finding a few problems on this work. Here I list them:

 

- First I drew the lines on 2D and I applied the revolve command to get a plump shape, as a cigar. But both the top as the bottom of this submarine has beveled surfaces. How can I make it? the chamfer command is not working on the circular surface.

 

- The back of this submarine has a decline on a polygonal shape, but I don't know how to do it. All the sections has circular shapes.

 

Someone could help me?

[JD Mather]

Extrude and Subtract

or

Presspull (cut)

or

Slice with surface.

 

Attach your dwg file here.

 

Before you are done -

You will probably want to become familiar with Loft as well.

[levimfa]

Extrude and Subtract

or

Presspull (cut)

or

Slice with surface.

 

Attach your dwg file here.

 

Before you are done -

You will probably want to become familiar with Loft as well.

 

I can't go beyond this step:

Edited April 18, 2014 by levimfa

[JD Mather]

Why did you model as surface bodies rather than as a solid body?

Where is your construction geometry? (poor practice to erase construction geometry - place it on a hidden layer)

 

I recommend you start over and model this as a solid model (did 2009 have the surfsculpt command?).

 

Use surfaces only as construction geometry.

[levimfa]

Why did you model as surface bodies rather than as a solid body?

Where is your construction geometry? (poor practice to erase construction geometry - place it on a hidden layer)

 

I recommend you start over and model this as a solid model (did 2009 have the surfsculpt command?).

 

Use surfaces only as construction geometry.

 

Well, I am a beginner. I don't know how to do it in another way. How can I model on solid body?

 

I'll try to do what you are teaching me. Thanks a lot, JD Mather!

 

P.S: No surfsculpt in the 2009 version.

[JD Mather]

Draw the outline over again and then STOP. Do not attempt 3D until further instruction. Attach that file here.

[ReMark]

If you extrude a line or an arc you'll end up with a surface.

 

If you extrude a closed polyline you'll end up with a solid.

 

If you revolve a closed profile you'll end up with a solid.

 

The tapered shape of the end of the sub could possibly be done by lofting a polygon and a rectangle.

[levimfa]

Draw the outline over again and then STOP. Do not attempt 3D until further instruction. Attach that file here.

 

Here it is. I did the way I did before. I drew just one side of the outline, and the line in the center is the axis for the revolve command. I have to draw the both sides of the outline and forget the revolve command?

 

Drawing1.dwg

[ReMark]

Different parts of the sub may require different techniques.

[ReMark]

Disclaimer: This is NOT your sub. It is a sub-like object created in sections (nose, main body, tail, and topside). It is also incomplete. The point being that each section required a different approach.

[JD Mather]

Here it is. I did the way I did before. I drew just one side of the outline, and the line in the center is the axis for the revolve command.

 

Do you know how to create layers?

Create a layer named Construction Profiles.

Create a layer named Construction Surfaces.

Create a layer named Solid.

 

Use the Polyline Edit command (PE Enter) with the Joint (J) option to join the polyline you have to the axis line you have. The goal is a closed profile.

Move the profile to the Construction Profiles layer.

Attach the file here.

[levimfa]

Do you know how to create layers?

Create a layer named Construction Profiles.

Create a layer named Construction Surfaces.

Create a layer named Solid.

 

Use the Polyline Edit command (PE Enter) with the Joint (J) option to join the polyline you have to the axis line you have. The goal is a closed profile.

Move the profile to the Construction Profiles layer.

Attach the file here.

 

Here it is, JD Mather:

Edited April 23, 2014 by levimfa

[JD Mather]

Revolve the profile and move the solid body to the Solid layer.

Do not delete the profile (unless you like creating the same geometry over and over again).

[levimfa]

Revolve the profile and move the solid body to the Solid layer.

Do not delete the profile (unless you like creating the same geometry over and over again).

 

Right. Done!

 

Now I have returned to the solid that I had. From here I don't know how to proceed to get the chamfered effect and the decline on the back.

Edited April 23, 2014 by levimfa

[JD Mather]

Right. Done!

 

Now I have returned to the solid that I had. From here I don't know how to proceed to get the chamfered effect and the decline on the back.

 

If you had a solid before - why did you post the surface model here instead of the solid model?

My guess is that you don't know what you had before.

 

What happened to the construction profile?

I don't see anything on your construction profile layer?

You have delobj set to 0 (off) so your original profile used for the revolved solid should still be there?

What happened to it? You didn't delete it did you? I'm I missing something here? I don't see the profile?

[levimfa]

If you had a solid before - why did you post the surface model here instead of the solid model?

My guess is that you don't know what you had before.

 

What happened to the construction profile?

I don't see anything on your construction profile layer?

You have delobj set to 0 (off) so your original profile used for the revolved solid should still be there?

What happened to it? You didn't delete it did you? I'm I missing something here? I don't see the profile?

 

After the revolve, I moved the solid body obtained to the solid layer as you requested. This is why the original profile is not visible.

 

---------

 

I still do not dominate the AutoCAD very well, I'm learning it. This is the reason of my apparent difficulty.

Edited April 21, 2014 by levimfa

[JD Mather]

If you type the variable name delobj and hit Enter - what does your command line say it is currently set to?

[levimfa]

If you type the variable name delobj and hit Enter - what does your command line say it is currently set to?

 

DELOBJ

 

I have to type 0 before the revolve?

[JD Mather]

Ah, that explains it. I thought that setting was stored in the file.

I have it set on 0 (off) on my machine so that construction geometry is preserved.

[levimfa]

Ah, that explains it. I thought that setting was stored in the file.

I have it set on 0 (off) on my machine so that construction geometry is preserved.

 

So, what should I do now? Preserve de delobj in value 1, or change to 0? and when I have to do it? before the revolve?