Simple Surfacing Problem

[andrewyair]

Well, I hope it is anyway!

All I'm trying to do is create a surface that stretches over the top of the curves that I've generated as per the attached image.



It should be really simple but I've got a bit of a mental block and can't get anywhere with it - any help would be much appreciated!

Thanks, Andrew.

2008-07-06_072315_rear-01.prt.zip

 

[design-engine]

this can be done however it is not a simple solution to your apparent simple problem. First notice that the geometry does not leave any four part boundary.

Thats the only hint I give you for now.Its kind of like a crossword puzzle. You need practice to get your mind thinking of these solutions. After a while you start to solve these problems in your head like a puzzle. Then the puzzle is not so much fun to solve and you look for more challenging puzzles.
Edited by: design-engine

 

[c_thompson_68]

Attached is my concept of this part, and it is in WF 3.0 as was the original. From the shaded curvature analysis, you can see the areas that need improvement.


I would also be interested in knowing what surface featuresother Pro-E usersrecommended for modeling this part. Lately, I have been using SolidWorksand could use a refresher on Pro-E suface modeling techniques.


2008-07-07_105535_rear-01_concept1.zip



Edited by: c_thompson_68

 

[design-engine]

close... There is always a better way. Ill model up a better solution this afternoon.

 

[csusie]

Try this road plan

 

[csusie]

Something like that anyway

 

[c_thompson_68]

I tried this again using the ISDX module (FreeForm Surfacing) inside Pro-E to create a loft surface (instead of boundary blend). It showns improvement, but many Pro-E users do not have the ISDX module unless it was purchased as an extra module.


I would be interested in seeing the Bart's solution. I may try testing this in SolidWorks later to see how it compares to the Pro-E module.






Edited by: c_thompson_68

 

[csusie]

[No message]

 

[jeff4136]

Simple? No.

Studying variations of that will introduce you to many of
the basic concepts and some of the finer points you'll need
to come to grips with for 'complex shape' modeling.
.
2008-07-07_175701_rect_dome--wf2--.prt.zip
.

 

[design-engine]

Thats what I was thinking. I call that the toupee method because it has a bald spot or a trimmed back four part boundary .... to make in the end a four part boundary.

Its a little extra work but the result is so much nicer. I would not even think of doing it another way.
Edited by: design-engine

 

[[-Skint-]]

Yeah Jeff, thats what I was gonna do. Nice job.

 

[Jacoolo]

lack of words to discribe all these smarts tricks jeff introduced in his model

I have this kind of feeling that jeff is Proe`s granite kernell which came out of software and reborn as human being...

or maybe, this is artificial inteligence running quitly on small PTC server and serve us with its wisdom

whenever it is - thanks jeff

 

[design-engine]

Not many people take the time like Jeff did to make such a great explanation. More people like that makes this board so valuable.BTW we got NASA coming in for a Maya class. Cool hu?
Edited by: design-engine

 

[mgnt8]

NASA and Maya. Interesting. I hope they're not planning on building a Matrix type power plant or anything like that. I've never seen VSS accomplish something like this. Does PTC even know about it. You wonder sometimes.

 

[solidworm]

This is so easy to model in solidworks just using fill surface command and a couple of constrain curve. i dont know what they are doing at PTC. after decades of proengineering development, it lacks the some useful functionalities. i think they have lost the surfacing game.

 

[dgs]

This is so easy to model in solidworks just using fill surface command and a couple of constrain curve.

Have you looked at the model posted? He's posted 5 solutions in one model, none of which required more than 10-12 features. A couple were only 3 or 4 features. Pretty simple, once you know vss.


If SW is easier than that, post a SW model. I'd like to see it since I have occasion to use SW once and a while. I'd like to see a SW model that creates all 5 that he did.

 

[design-engine]

That fill surface tool in Solidworks is innovative for sure. You would still use the same technique as jeff used.
Edited by: design-engine

 

[mgnt8]

Does Solidworks have C2 curvature rounds & Fill Surface a C2 N-agon? If so maybe PTC needs to catch up.
Edited by: mgnt8

 

[jeff4136]

> just using fill surface command and a couple of constrain curve


Would you post a neutral? I'm interested in seeing the surface(s) created.

 

[design-engine]

Solidworks has a g2 functionality with their new boundary blend tool however it does not do g2 rounds. I probably should not know this but the Solidworks kernel does have the capability to do g2 rounds but that functionality is not written into the tools interface.

Most people dont use surfacing in sw and most of those people don't do it well. Out of the ones who do it well a less than ten percent rarely know what g2 is and why you would use it... Maybe some of the Alias converts to Solidworks would.

And sw is for the average engineer... six sigma is all about the bell curve.

the only seat of solidworks I have was given to me by solidworks to review for design engine and I got letters... well in the end I tossed it to keep out of trouble. long story.

I was going to set up and do training on solidworks... tested the waters... no one ever called about it.... they were sold on the fact that it's so easy bla bla bla.They don't need training. Plus the VARS bitch a lot as you may not know. Its a tight economy and who is design engine anyway. Anyway ... file 13

Touchy subject with me.
Edited by: design-engine