zmarcoz Posted July 31, 2013 Share Posted July 31, 2013 (edited) Dear all, I have two parts that put together. Basically a triangular ring is put into a hole of a hollow cylinder. The triangular ring (0.5 dia) could freely move inside the hole (0.625 dia). I need to do a FEA analysis, my steps are 1. I mate the centerline of the hole to one of the axis of the triangle ring, so they line up (as least visually), then click OK. AND then delete this constraint 2. Start FEA analysis, put fix constraint at the bottom of the cylinder, add force to the ring 3. ADD 2 contacts (separation, no sliding) 4. RUN I cannot believe the result. I apply 50 lbf only, but the safety factor is close to zero. Do my steps right??? Pictures and parts are attached. Inventor 2014 Question.zip Edited July 31, 2013 by zmarcoz Quote Link to comment Share on other sites More sharing options...
Matsui21 Posted August 14, 2013 Share Posted August 14, 2013 I have a question...wouldn't you want to make the contacts (sliding / no separation)? Quote Link to comment Share on other sites More sharing options...
JD Mather Posted August 14, 2013 Share Posted August 14, 2013 Yes, there are other errors in logic as well. Quote Link to comment Share on other sites More sharing options...
Lazer Posted August 17, 2013 Share Posted August 17, 2013 I just ran the FEA on your model and got a safety factor of 6 using (sliding / no separation) @ 50 lbf. Passed that test with fling colours as it should do. Quote Link to comment Share on other sites More sharing options...
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