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Fatigue module message "Stress cycle defined by stress amplitude "

Posted 07.09.2017, 19:25 GMT-4 1 Reply

Alfredo Rodriguez
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Hi, I'm using the fatigue module to evaluate the results from a solid mechanics object. However, I get the following warning message: "Stress cycle defined by stress amplitude 285686239.1227691 encountered. Fatigue cannot be evaluated ". I get a Cycles to Failure plot, but an area of the object appears empty.

Any ideas on what might be producing this warning?

I mighty upload the model later if required, the computer I'm using eighty now doesn't want to load the forum page, so I'm posting from my phone.

Thanks for any help,

Alfredo
1 Reply Last Post 11.09.2017, 02:57 GMT-4
Henrik Sönnerlind COMSOL Employee

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Posted: 7 years ago 11.09.2017, 02:57 GMT-4
Hi,

The stress amplitude is too large. It is outside the range of the S-N curve, in the sense that the predicted number of cycles will be <1.

Regards,
Henrik
Hi, The stress amplitude is too large. It is outside the range of the S-N curve, in the sense that the predicted number of cycles will be

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