How to Model Eliptical Dome

[ssharma-2]

Hi,

Can anybody pls help, i need to model a part as per the attached image.

Thanks,

Shashank

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[StephenW]

The way I have done is to build 1/4 of it using curves, then use those curves to create a surface. Once you have 1/4 surface, you can mirror the surface to get 1/2 then mirror again to get the  whole. Then merge the surfaces. Once merged, you can solidify or add thickness as needed.

[N8]

Here's one approach:

2X conic sketches

rectangle boundary blend trimmed back

4 sided boundary around perimeter

[MauroStefanovic]

Hi Steven,

i've taken your file, reduced number of sketches, added normal and tangency costraints to boundary blends and substituted style feature (requires license) with a simple boundary blend.

Take a look if you're interested. Creo 3.0 file attached.

[Inoram]

Probably not blended as nice, but since there is nothing defining that in the original post. IT'S PERFECT!

[mpeterson]

Attached is my effort to model this by creating one corner using boundary blends and then 2 mirrors to get the entire part. I added some intermediate curves in both directions to help control the blending and eliminate or minimize any ridges. I have not used style features so did not attempt using them to possibly improve the smoothness.

[TomD.inPDX]

From a purely stylized perspective, I like the attached version.  Just difficult to control specific dimensions.

Creo 3.0 commercial version attached.

prt0021a is closely scaled to the original.  If I was better at manipulating the primitive, it would be darn close.

[Patriot_1776]

Smooooooth!    Nice work!