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strain-life approach for random vibration failure of sheet metal Question
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Posted by: Athar

10/28/2004, 00:53:13

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A sheet metal (low alloy steel) component is being analyzed for cracks observed during transportation. The failure cases, however is pretty scanty: just 1 in 10,000. I still would like to predict life dependent primarily on a sharp notch. Rendering the notch with a small fillet, FEA results gave beyond yield stress (SEQV) as 1 sigma value. Elasto-plastic material properties are not available. How correct it is to assume elastic strain to be the major player in the failure process and NOT plastic strain? Is there a way I can get more data of SAE 1006 / 1008 on the www? I'm using Ansys for FEA. Could you pls point me towards any good info avialbl on the www that talks abt the strain-life method without a notch? I've found plenty of informative stuff on ncode website and vibrationdata, but all related to S-N approach. TIA, Athar



FE Analyst

Modified by Administrator at Thu, Oct 28, 2004, 08:41:59

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Re: strain-life approach for random vibration failure of sheet metal
Re: strain-life approach for random vibration failure of sheet metal -- Athar Post Reply Top of thread Forum
Posted by: acroduster1

10/28/2004, 08:35:57

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I suggest that you read up on and take a course in Fracture Mechanics.  It sounds like this would be an ideal application for the theories used.




Acro


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