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missing tutorial on how to lift a surface

  • Thread starter Thread starter arzigogolo
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arzigogolo

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Hello, everyone!

I recently came across a problem with which I had already confronted myself in the past and that I had solved with an explanation I had found looking on the net.

the problem is right here: I don't remember where I saw this explanation anymore.

I would like to find it because, for me, it was something I would never have managed to do without that explanation, in fact it was a fairly complex procedure that articulated in different passages.

basically the tutorial, explained in passages with screenshots, referred to the possibility of "solving" a surface but keeping it connected to the basic contour (as if I had a cube and tried to "bomb" a face inserting hypothetically a ball from the inside of the cube below one of the faces).

explaining to me with another example, it is as if I had a large rectangular paper sheet or with any other shape, fixed on the ground, and I tried to lift it from below with a ball or a ball.

of course the sheet should create a central hump corresponding to the shape of the ball, but without separating itself from its edges that represent the shape. It should therefore be elastic, of course, in order to deform.

here all this explanation was translated into inventor commands and, coarsely, I can try to reproduce it until I remember, in the hope that some of you who will read this post, can help me track that site where I saw the demonstration.

the procedure, in order to obtain a surface bombed by a flat surface was described as:

1 - create a sketch with any polygonal shape, (quadrate, rectangle, circle, etc.).

2 - extrude it as solid.

3 - eliminate the upper face with the "elimina face" command.

4 - create a surface corresponding to the eliminated face presumably with the command "contour surface"

5 - to create a floor resting on the newly created replacement surface and, through a series of few other steps that I have not clear, it was possible to "unite" the surface replaced with the plan created on it.
done this, "offsetting" the plan upwards, the surface would follow it by creating the bombing, but sending "attached" to the edges.

Maybe some of you will have done it already and maybe you can explain the procedure without needing to find the link I look for.

I just hope I've explained myself quite clearly to make understand what I'm looking for and that you can help me find that link because it was a nice system explained very well.

the site was very similar to this http://www.kwikmcad.com/iclips/avi.aspxand in fact initially I thought it was this and instead it was not so.

Among other things, on the page I linked, there is the very interesting procedure to create a half-car axis in the center of an asola.

Thank you so far for your help!:smile:

Thank you.

Light

p.s.

I attach an image as far as I can get there.
 

Attachments

  • superficie_bombata.webp
    superficie_bombata.webp
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excuse but your final result must be a surface or a solid? Maybe there's a quicker procedure to get to the final result, if you explain what you have to do we can help you. . .
 
excuse but your final result must be a surface or a solid? Maybe there's a quicker procedure to get to the final result, if you explain what you have to do we can help you. . .
Hello, peppe!

Thank you.:smile:

Yes, the final result must be a surface that after I waited to create a solid.

In practice I would like the upper surface of an extruded rectangle (but also any other form would be fine) to "solve" while remaining anchored at the edge of the rectangular face. In essence, it is like the canvas of a picture fixed on the frame on whose center a sphere is pressed slightly (without breaking it obviously:biggrin:). the surface of the canvas will be deformed assuming the spherical shape of the sphere while remaining attached to the edges of the frame.

I attach you an image of an extruded rectangle with the surface I would like to get. In practice, the surface was obtained by giving the edges of the rectangle the "tangent" condition with the command "contour surface".

the passages I followed are:

- extruded rectangle creation
- upper face removal with "elimina face" command
- replacement of the surface just erased with a replacement using the command "creation boundary surface" with the condition of the edges as "tangent".

the result can be seen in the image.

If that's all I would have solved the problem.
what I would like to do, would be able to lower or raise the apex of the surface with an offset plane parallel to the upper surface and tangent on the highest point of the bombed surface, so that the height of the bombing was controlled by the offset of the plane itself.

I also put some writings in the image so that it is clearer, because I don't know if I could explain myself.

I thank you for the availability! :smile:

Bye.

Light
 

Attachments

  • superficie_bombata_2.webp
    superficie_bombata_2.webp
    69.4 KB · Views: 13
I did this, but it's an accrouch... .
until the face helimin is all ok, then do your plan - do a sketch and draw a circle or see what contour to do (I made a circle with ø0.001 so that you do not see) then with your same procedure do the contour surface and also select the sketch on the floor. to solidify just that you combine surfaces!
Immagine.webp
 
I did this, but it's an accrouch... .
until the face helimin is all ok, then do your plan - do a sketch and draw a circle or see what contour to do (I made a circle with ø0.001 so that you do not see) then with your same procedure do the contour surface and also select the sketch on the floor. to solidify just that you combine surfaces!
View attachment 23118
if you can post the file....:smile:
 
I did this, but it's an accrouch... .
until the face helimin is all ok, then do your plan - do a sketch and draw a circle or see what contour to do (I made a circle with ø0.001 so that you do not see) then with your same procedure do the contour surface and also select the sketch on the floor. to solidify just that you combine surfaces!
View attachment 23118
Hello, peppe.

Meanwhile thank you for the test!:finger:
Yes, he understood very well, that's exactly what I wanted to do!

Now I try to see how it comes, unfortunately I can't open the file because I use 2011, but I see to arrange the same following the image you posted.

As soon as I try, I can tell you.

Bye.

Thank you.

Light
 
I did this, but it's an accrouch... .
until the face helimin is all ok, then do your plan - do a sketch and draw a circle or see what contour to do (I made a circle with ø0.001 so that you do not see) then with your same procedure do the contour surface and also select the sketch on the floor. to solidify just that you combine surfaces!
View attachment 23118
I just tried and it works!:finger:

in the image there is the result.

the only thing is that I can't combine the rectangle surface with the circle from ø 0.001 because when I try to select it by zooming on it with the command "join surfaces", it throws me out of the program saying "exhausted memory etc." with 4 gb of ram!:eek:

even with the command "inspection" throws me out of the program.:confused:

However, at least a remarkable result I got it thanks to your explanation, then for solidification I will try something.

If you want to try it yourself, you'll do me a pleasure.:finger:

Thank you.

Light
 

Attachments

  • superficie_bombata_3.webp
    superficie_bombata_3.webp
    60.6 KB · Views: 9

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