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Surface creation

U

users4

New member
Hi all,


I'm a completely new user to ProE. I want to create a surface with a 100 micron thickness. This surface is to be added to another volume, also created in ProE.


My surface has a circular base, becomes somewhat elliptical as it moves upward, then the top free edge has a different contour. I have the points that describe the top free edge, and the radius of the circular base. Also the points that comprise the elliptical edge (which is a bevel) is available.


Using all the above informatiom, how do I create the surface? I tried using the BLEND option, but this won't let me give the appropriate dimensions for the points.


Is there some way I can do this?


Thanks,


Vidya
 
Hi Vidya,


If surface is planner ,then use FILL command. After entering to sketcher mode.Draw all the points.Draw curves thru the point.And you will get the surface.


if it not planner, then first draw curves using "curve thru points ".At least four curves should be there. Then use surface by bouary blend command.Select the curves in first direction and then in second direction.


Hope this will solve your problem.


Regards,


Om
 
Hi Om,


Thnaks a lot for the reply. However, since I'm new to ProE, many of its features are still new to me. Can you please explain what aPLANNER is and also the exact procedure to draw the surface. And where is the FILL command?


My surface id 3D and each point is on a different plane.So can I draw datum planes for each of the z axis values and then plot the x,y coordinates corresponding to each of those z values? Then join the points with a spline, draw the circular base, and then blend the curves? I tried this , but it did not work the way I want? Am I going wrong somewhere?


Thaks,


Vidya
 
Hi Shinto,


I drew the curves using different datum planes, then drew the circular base, and tried to blend the curves. But I still do not get the surface that I want. Also, I need it to be 100 microns thick.


Any suggestions on this?


Thanks,


Vidya
 
before you can add thickness to the surface, you must first create the surface. don't worry about the thickness until you get the surface created that is the correct shape.

after you get the surface created, you can thicken the surface from the <edit> <thicken> commands.

"Planner" in the previous post was a type and meant to be Planar meaning all the points lie on the same plane.

Michael
 
Hey Vidya,


Would it be possible to sketch on paper what you approximatly want to end up with, or post a screenshot of the curves you have at the moment?


Cheers


Nick
 
Hi Nick,


I've attached a picture of the model that I have. It is that of a frame with a flexible polymeric leaflet wrapped around it. The frame was modeled in ProE. Now I have to model the leaflet also in ProE in order to send it to Fluent to do the CFD analysis.


I've the coordinates of the points that comprise the top free edge of the leaflet. The leaflet and the frame have a circular base. In addition, there is a bevel feature (somewhat elliptical) on the frame that gives the leaflet an inward dimple kind of contour. I have to create the leaflet surface with a 100 micron thickness and then attach it to the frame.


I've also attached a copy of my work in ProE. This is a .prt file.


Also, can someone please explain how an assembly is done. I'm thinking that this is the way I can attach tye leaflet to the frame. I need a step- by- step detailed explanation of how the assembly is done.


Thanks a lot.


Vidya2006-04-26_224807_ProE.zip
 
Hey man,


I just changed your style feature a bit. I would create all curves in the style feature so you have more control over the surface itself. I would also only model 1/4th as its symmetric. If needed you can add more curves to tweak it even more. Preferably I would unlink the style curve from the points you created and then start to tweak it to optimise the dents you get in your surface.


Included is a assembly. I would assemble the machine default and then add your part using mates/aligns of datum planes. If you have to add your part to the machine, skip the default thing. Always try to assemble with datum planes / axis and not model references like points, edges as they could disappear during the design process.


I hope it helps


Nick


2006-04-27_070848_traildojo.zip
 
Hi Nick and Shinto,


Thanks a lot for your replies. What I'm trying to do is somewhat likeShinto had suggested, but I also wantit to be a smooth surface and have the bevel feature (which is somewhat like an ellipse) also included,that gives the surface the dent that it has.


What I did is this.......drew the upper free edge curve, then the elliptical bevel, and the circular base. Then createda surfaceusing the top edge and the bevel, and then another using the bevel and the circularbase. Then mirrored the entire structure to the other side. This however created holes (no surface at all) at the sides. So I just put an extra patch out there. But this has created some irregularjoints at those places. I'm thinking that when I attach this feature to the frame and then do a CFD analysis, there may be some surface discontinuities, whichmay result in errors in the flow analysis.


Do you have any suggestions by which this can be corrected? I have attached my .prt file.


Thnaks,


Vidya2006-04-28_103541_trial.prt.zip
 
Hi,


I still have not been able to figure out how to do the Assembly. Can you give me a step- by- step procedure on how to do this? Or suggest some place where I can look for instructions?


I have the leaflet model that I just created and the frame model. Need to attach the leaflet to the frame.


Thanks,


Vidya
 
Hi all,


Can someone tell me where I can find tutorials on how to do an ASSEMBLY in ProE? I have two models created separately in ProE and now I want to assemble the two together to complete my structure.


Does anyone have anyguidelines on that topic? I searched the HELP, but couldn't understand much.


Thanks a lot.


Vidya
 
Hi all,


I just managed to create my surface. But for some reason, I'm unable to give a thickness of 0.1mm to the entire model. It creates the thickness for someparts, but not for the entite surface.


I've attached my .prt file. Can someone look into it and tell me what's wrong and how I can fix it?


Thanks, in advance.


Vidya2006-04-29_194127_leaflet.prt.zip
 
Hi user4 and welcome to the forum. I have checked out your part and I have to say that this is too complicated to create something by surface man. I mean that so many points for creating something like this are not necessary. When you are creating some model which have many quilts (I mean surfaces) you have to follow these few steps as basic steps:
1)Create some curves on the datum planes.
2)Create surface by using boundary or other features which are able to create surface (i mean Extrude, Revolve, Sweeps, Blends, Style and so on..). Or just create Boundary through curves what you created earlier
3)Than do not forget select surfaces for MERGE them by holding the CTRL key. If your model required some cuts by surfaces or curves than use TRIM feature.
4)When are all surfaces merged as one surface than select last MERGE feature from model tree and define the thickness.
There was only few basic steps for working with surfaces but for better results you have to spent so many hours.

Hope this help. Keep gonig.
 
Hi Miko,


Thanks for the advice. I too felt that what I did is too complicated with so many datum planes, etc. But my ultimate goal is to do a CFD analysis of my model. So I want to capture the model in the exact position as it is (i.e., the partially open situation). So if I'm using the comands that you suggested, how do I incorporate the exact data points that I have? I just put my model on an overhead projector and measured off points in x,y,z directions and then scaled them and used these points to construct my model.


If I have to do it the way you suggested, how do i do it? Can you give me some suggestions on that? I had posted my file and a picture of my model in the earlier messages. Since I'm a brand new user of ProE, my knowledge of it is limited and I would require detailed explanations.


Thanks,


Vidya
 
What is CFD analysis of model?
For example: you can create complex model by surfaces as I wrote earlier and than create points wherever you want by intersecting of offset datum plane and bordered curve or any edge by holding the CTRL key (I mean the curve or edge which is dedicated as basic curve for boundary or Style feature). If you will try this way of construction than you will be able to dinamically change the distance between datum planes and thereafter the position of points. But disadvantage is> Those points are not dedicated for construction! they are just for distance analysis.For better understanding of my way would be the best way of uploading the file but unfortunately at this time I have some problem with uploading to this topic. and the problem is maybe on the server and not on my side.
Good luck
 
Hi Miko,


I cannot understand what you are trying to say. Can you please explain in detail? Just like you would to a completely new user.


Thanks,


Vidya
 
Hi hlf71,


There is a gap between the two flaps. I mean the two are supposed to be flaps that open and close.


Now my problem is with the assembly. How do I asseble the two parts that I have according to the picture that I had shown earlier?
 
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