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Boss and shaft analysis

Question asked by Anthony Moulton on Oct 20, 2008
Latest reply on Oct 21, 2008 by Anthony Moulton
Hello all,

I am new to COSMOS so please bear with me, I am sure there is a simple solution to my problem that I am not aware of. I am attempting to perform an analysis on a boss with a threaded shaft inserted into it. Once the shaft is inserted, fillet welds are created around were the boss and shaft meet on both the front and back of the boss. I have constructed models with accurate threads and also with semi-accurate thread approximations but neither model will mesh. Is there a simpler way to perform this test i.e. a simpler way to inform COSMOS the boss and shaft meeting is threaded without actually constructing helical threads? I have also constructed multiple solid parts without threads but when I perform the analysis it appears that the front fillet weld is under stress but not the rear fillet weld. If anyone has any suggestions please let me know. Thank you for your input.