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Create 3D Sketch
I'm bran new to CoCreate Modeling and explicit geometry-based modeling, but I'm trying to do an assignment and would really appreciate any help.
I have a CoCreate model of a box frame assembly, and I have to remake the geometry of the frame using single lines, center-lines down the middles of the frame tubes. The 3D sketch then has to be exported into an FEA program for analysis. I have tried to export this file as an IGES to Solidworks and creating planes and a center axis for every tube and then creating a 3D sketch of the geometry, but the frame assembly is quite large and this process is very slow. I am staring at the hourglass for 90 seconds for every axis that I add... If someone can help me by telling me how I can do this efficiently in CoCreate it would save me a lot of time. |
#2
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Re: Create 3D Sketch
I don't think I really understand the task at hand yet (it's probably simply too late in the evening ); I guess it would help me a lot if you could attach a screenshot to illustrate what you're trying to do. Also, which version of CoCreate Modeling do you use?
Thanks, Claus
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CoCreate Modeling FAQ: http://www.clausbrod.de/CoCreateModeling/ |
#3
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Re: Create 3D Sketch
I've included some screenshots of what I'm trying to accomplish in Solidworks 2007. Basically I've set up at least one plane for every tube as I have explained already, and then defined an axis that runs down the middle of each tube. From there, I am making a 3D sketch to retrace the geometry. This is necessary so that I have a 3D line representation of the frame for my Finite Element Analysis.
I would like to learn how to do this exact same thing in CoCreate Ver 16.0. I've managed to create sketches using the 2D Co-Pilot however only on one single working plane. What I would like to have is one single 3D sketch of the entire frame. Any help is much appreciated. |
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Re: Create 3D Sketch
Excellent, thanks a lot. I'm sure somebody (not me, though) will be able to pick up from here.
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CoCreate Modeling FAQ: http://www.clausbrod.de/CoCreateModeling/ |
#5
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Re: Create 3D Sketch
You can create 3D wireframe parts in Modeling using the options under the 3D Curve menu (icons looks sort of like a green sine wave). You can then export the 3D wireframe part to IGES from Modeling. Assuming your FEA package can import a 3D wireframe IGES file it should work.
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John Scheffel |
#6
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Re: Create 3D Sketch
Hi John, I would probably use the 3D Curve - Line function since I only require straight lines and not splines. However, when I use the 3D Line function, I assumed that it would snap to the geometry just like with the 2D CoPilot, however, it does not do this. I have configured the 3D CoPilot settings but it doesn't seem to be working. Do I need to turn it on somehow? or does this CoPilot feature not exist for 3D geometry? Can someone please help me with this?
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#7
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Re: Create 3D Sketch
Which version of Modeling are you running? What kind of geometry are you trying to snap to?
I tried 3D Curve/Line and it seems to snap to 3D geometry (edges, vertices). For your example I think the challenge will be getting the centroid of the frame member because there is no geometry to snap to at the centroid of the end faces. It is easy to create lines along the center axis of faces that have an axis (such as cylidrical faces) using the By Axis option, but that wont work for cross sections with no defined axis. I don't know of any easy way to snap to the centroid of more complex cross sections. Hopefully someone else will have a suggestion.
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John Scheffel |
Tags |
3d sketch, axis, fea, iges, planes |
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