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How to set fatigue module in COMSOL 5.2 properly ?

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Hi,

I would like to make fatigue study simulation on my simple 3D model. I know exact parameters for this study:

- compressive load (about 700 N) on upper, flat surface (shown in picture 1)
- fixed constraint on lower, concave surface (shown in picture 2)
- 2 mln cycles (or less if it's not possible)
- material: PMMA or ceramics
- as a result I need information how many cycles can my model wihtstand before it breaks

The problem is that I've never used Fatigue Module and I don't know how to set these parameters in it. I would be very grateful for instructions how to do it.

Thanks and regards,
Michalina


1 Reply Last Post 2016年12月2日 GMT-5 04:17

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Posted: 8 years ago 2016年12月2日 GMT-5 04:17
Hi Michalina,

please have a look at our examples in the application library of COMSOL. I would suggest to start with the models in the folder "Fatigue Module -> Stress Based" particularly the files "rim fatigue" and "shaft with fillet". For your convenience, I also attached screenshots to this message to point out the location of these files. This should give you a good starting point to implement your own geometry.

Best regards,
Tomasz Krupicz
Comsol Multiphysics GmbH
Hi Michalina, please have a look at our examples in the application library of COMSOL. I would suggest to start with the models in the folder "Fatigue Module -> Stress Based" particularly the files "rim fatigue" and "shaft with fillet". For your convenience, I also attached screenshots to this message to point out the location of these files. This should give you a good starting point to implement your own geometry. Best regards, Tomasz Krupicz Comsol Multiphysics GmbH

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