help on creating a surface

[matteopacini]

Hello everyone,
I have to create a surface similar to a dome, starting with the sketches you see in the figure below.
In practice I have a non-regular shape base and 4 lines that converge at a point that will have to be the top of the surface.
not being axial-symmetrical I cannot use feature of revolution.
Can someone suggest me how to create the surface? (leaving the base open)

Thank you.

Matteo

 

[alpole]

Bye, Mateo. .
Seeing the drawn curves, I know they're full
of cuspids(intermediate points), it would be better than before
to start, smooth them,
or even rebuild them.. in a more fluid way
after that using loft, or fill, you can build your own
surfaces
In any case from the curves I see, you will not get beautiful
surfaces... the quality of the latter depends
from the entrance curves
I don't know if the curves reflect something real or
if they are simple curves without references... .
Let us clarify this aspect first, and then we could
to face your modeling
to the

 

[matteopacini]

Bye!
Meanwhile thank you for the answer!
the problem is this: this object should become the front part of a fuselage (the "nase"). in practice I took the contour of all the longitudinal trunk panels to make the base, but they have a little bit of curves and boring edges (see image below with the base).to make a more "displaced" approach than that figure is not the maximum because it would not go to match with the element with which I would go to mate it.
Any alternative ideas?

 

[CATSEGGIO]

of each curve you have to make the loft, to one separately, no that you take all the base, how many curves are 6/8? I don't think they're all pointing to the same point.

 

[matteopacini]

of each curve you have to make the loft, to one separately, no that you take all the base, how many curves are 6/8? I don't think they're all pointing to the same point.

the command "loft" to what corresponds in Italian? to the "agreement" between curves? are 4 curves that converge at one point and a closed base.

 

[alpole]

Matteo, excuse me but from what you say
I assume you're at first arms, quite fast
on the modeling tools that catia has available. . .
I regret that there is a help that works great for
the deepening of the various features and not least
various publications on the use of catia-
I have done this boring thing, but I have to say,
I'll try to show you
the process of construction of the skin..
if you send the file , you must save it with version 20 or earlier
Otherwise I can't open it. .
to the

 

[matteopacini]

Matteo, excuse me but from what you say
I assume you're at first arms, quite fast
on the modeling tools that catia has available. . .
I regret that there is a help that works great for
the deepening of the various features and not least
various publications on the use of catia-
I have done this boring thing, but I have to say,
I'll try to show you
the process of construction of the skin..
if you send the file , you must save it with version 20 or earlier
Otherwise I can't open it. .
to the

No, the first weapons are not.. the problem more than anything else to find a form that is "physically good". Later, as soon as I have it available, I'll send you the file with the curves.

 

[matteopacini]

here is the file (lightly different than that of the figure, because I tried to create the surfaces only on half, being symmetrical compared to a plane)!

 

[CATSEGGIO]

4 curves + those in circles, in circles how many curves?

 

[matteopacini]

4 curves + those in circles, in circles how many curves?View attachment 37984

I thought you meant the curves outside the base floor.
those curves there are the result of the extraction of the edge of the object to which it must mate.

 

[alpole]

I tried to make the skin.
but to do so I had to make changes to the profiles
basic designed. .
Some have inconsistencies.
elevation....
drawn by references.... or approximate
even with hyperbole-
the basic profile has many discontinuities
so I had to rebuild them
the realization of the skin in itself does not represent a great difficulty. .
the difficulty are the profiles and consistency with which they are
drawn. .
it is not enough that the profiles touch and create a wire
to claim to build a good surface-
Moreover, very important thing. . ,
missing the front surface, the contact one
with the closed profile on which to lean. . ;
In this case I arbitrarily built a sweept
but it is completely free to do so,
just to complete the skin, run
some" rappels "and make it "presentable"-
I hope that the file, where you will find all the steps can
help you...
greetings
to the

 

[matteopacini]

Thank you so much! You never end up learning! Tonight, as soon as I have the pc with catia I look in detail the file!
Thank you again!

 

[matteopacini]

I have difficulties opening the caia file, I don't want it to have been saved with too new version (I have v5 r17). is it possible to export it in a compatible and editable format?
Thank you.

 

[matteopacini]

If in the v5 r17 conversion the tree disappears you can send me a screenshot of the feature tree of your file so I can play the edit?

 

[goccia]

a fuselage.. to order,... depends on the type of fuselage; what model is it? how did you get them? Did you recalcate a triptych?
the indications of alpole are wise.. You should follow them.