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Modeling cracks

Posted Jul 10, 2012, 4:22 p.m. EDT Version 4.0a 2 Replies

Challen Herzberg
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I'm brand-new to Comsol. I'm trying to model a pipe with a weld that does not penetrate through the entire wall of the pipe and runs the entire length of the pipe. There is a load being applied to the inside of the pipe.
I initially built a ring (using the difference between two circles) and then took another difference, between the ring and bezier polygon. This left a little crack in the pipe, as I wanted. But after adding the pressure (including to the bezier polygon surface), I realized that having the bezier polygon had no effect on the final results.
How might I be able to go about modeling this weld?
I'm trying to find the KI, if that's important.
challen
2 Replies Last Post Jun 8, 2016, 11:48 a.m. EDT
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Hello Challen Herzberg

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Ayodeji Olamide
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Posted: 9 years ago Jun 7, 2016, 11:34 a.m. EDT
Hi Challen,

I am also very new to Comsol and trying to model something similar but without the circumferential weld. Have you found a solution to this? If yes, please kindly share it with me. Thanks in advance.
Hi Challen, I am also very new to Comsol and trying to model something similar but without the circumferential weld. Have you found a solution to this? If yes, please kindly share it with me. Thanks in advance.
Jeff Hiller COMSOL Employee

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Posted: 9 years ago Jun 8, 2016, 11:48 a.m. EDT
This tutorial illustrates how to compute the stress intensity factor KI:
www.comsol.com/model/single-edge-crack-988
Best regards,
Jeff
This tutorial illustrates how to compute the stress intensity factor KI: https://www.comsol.com/model/single-edge-crack-988 Best regards, Jeff

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