Surface Edit with Boundary Control?

[The_Bagel_Guy]

Hello,
I'm trying to edit a surface to make a bump on the surface of a model. The surface curves in all directions and I need to the edges of the bump to both match the profile of the bump and the curvature of the surface. Is this possible?
Using freeform surface allows me to make the shape but it pulls the edges away from the surface leaving a step behind?
I was told there is a way of editing surfaces with the style tool that allows the boundarys to remain fixed? I've put some photo's showing my efforts thus far, but I get the wall where the edges have pulled away when I edit the mesh on the surface edit tool. Any help will be greatly appreciated! Thanks guys, Chris.

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[solidworm]

you can set the boundaries fixed, only if your surface is
4 sided. it wont work for your case. you can use the warp
feature for your model.
Edited by: solidworm

 

[The_Bagel_Guy]

Hey Solidworm,

Thanks for the tip on warp. It still pulls the edges away from the surface though. Can you think of any other ways to model a bulge as shown in the second picture but without the edges pulling away from the surface?

 

[solidworm]

if you want to try warp, you should merge the two surfaces
first,those edges may move,but it wont make a gap like in
your picture,if you merge first.
have you tried deleting that light blue area, adding a
couple of internal curves that resembles the shape of
bulge you like, and patching the area with a surface in
ISDX? it may work in creo 2.0, worth trying.
Edit: i tried and it works in creo 2.0.
i'll upload a sample, if you liked, later.
Edited by: solidworm

 

[The_Bagel_Guy]

if you want to try warp, you should merge the two surfaces

first,those edges may move,but it wont make a gap like in

your picture,if you merge first.

....

I wouldn't mind seeing what you've done. Really struggling with this

Edited by: The_Bagel_Guy

 

[solidworm]

Here's a sample part
you can add another internal curve to form a "+" which will give you more control over the form.

 

[The_Bagel_Guy]

I've managed to get the geometry I wanted (More or less). Thanks for the help Solidworm.

I now have another issue, I can't shell the model after solidfying because of the geometry. Have you ever come across something like this? Any workaround?

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[solidworm]

that error means your offset value exceeds minimum radius
value of the surface and results in a self intersecting
surface or maybe you have a degenerate surface which causes
that error.lower your offset value or if its not an
options, as Creo suggests, identify the minimum radius
point or degenerate point if exists, exclude that portion
from offset operation, then patch it with boundary blend.