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Well it's a bit obvious that I'm new to this considering I keep posting questions, but I appreciate all the help everyone gives. I am having a definte problem within cosmos works when it comes to meshing a frame I have drawn up for analysis. Let me try and be a bit more specific; the frame in question is actually a modified race car chassis that I am studying for my undergrad research, It consists of various tubing (mostly 1.5"x0.095 wall thickness, 1.5"x0.120 wall thickness, and 1.25"x0.095 wall thickness), of which I have drawn up cross sections. Now to construct the model I first constructed a 3d sketch and then selected individual lines of the sketch for the various structural members of the above mentioned cross sections etc... Where pieces of tubing meet I have utilized the trim function to create a fishmouth in the tubing, (however this won't work for me in some cases, i.e. when 1.5x0.095 meets 1.5x0.120). Now the REAL problem, when the frame comes up in cosmosworks it fails to mesh, more specifically it surface meshes ok, but the volume mesh fails. I can't keep decreasing the element size because it is ridicuiously small as it is, it seems as though solidworks/cosmos just can't find a mesh to be happy with all of the strange bends/joints in a race car chassis. Speaking with my advisor/professor (who doesn't really know solidworks, so far I'm self taught) he suggested the possibility of treating each individual tube as a beam element so the entire model wouldn't have to mesh(accuracy doesn't have to be super high), much like I have done before with an old version of ansys to create trusses. Is this possible in solidworks? Can anyone give me any ideas on how to begin to tackle this, I have been beating me head on my desk with this one for a few weeks now!!
It sounds to me like you have done this frame by using "weldment" functionalilty, which is (IMO) the right way to model, but Cosmos doesn't like multibodies.
Try saving your part as an STL file. As long as there are no disjoint bodies when you open the STL it should be all one body, then you can apply your material properties and Cosmos away.
www.integratedmechanical.ca
Indeed it was weldment functionality, which i thought would be the most trouble free way to accomplish this. I tried your tip of saving as an STL file, but now when I try to create a study in cosmosworks of the STL version it says "no solid body to process", yet when it was just an .SLDPRT file i wouldn't get the "no solid body" warning, as a matter of fact I can go into cosmos and create a study etc... did I miss a step? Is there a way i can make the STL version a solid body? Thanks for the help! Also just for reference i have attached a really bad stock picture of the frame in question. To give an idea of scale the frame is approx. 12 ft long, 5 ft wide, 5 ft high.
Once you open the stl you have to resave it as sldprt again.
www.integratedmechanical.ca
just gave it a shot, saved the stl file as sldprt again....and got the same result. Still telling me there is no solid body to process. This is getting to be a tough one! Someone posted to me on another forum that this type of model would be next to impossible to accomplish using solidworks and cosmos....due to the fact that it is comprised of long, thin walled members....agree/disagree? Maybe it would be worth it to find another method to model and analyize this frame, but I wouldn't even know where to begin!
Sorry I can't help you with Cosmos.
Lucky I was able to help get your multi-body to a single body part.
If you have new release of SW you will have a year of tech support and can get SW certified help.
www.integratedmechanical.ca
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