{"id":38342,"date":"2019-10-16T17:00:32","date_gmt":"2019-10-16T17:00:32","guid":{"rendered":"\/forum\/forums\/topic\/singularity-in-contact-region\/"},"modified":"2019-10-16T17:00:32","modified_gmt":"2019-10-16T17:00:32","slug":"singularity-in-contact-region","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/singularity-in-contact-region\/","title":{"rendered":"Singularity in Contact Region"},"content":{"rendered":"

 Hello,<\/p>\n

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I have an issue with a singularity point that cannot be ignored. The singularity happens in a corner of a dovetail blade attachment, but it is very close to the high tensile stress region of the fillet. I have performed mesh refinement up to .005″ size elements and the minimum principle stress keeps rising (i.e. up to 1.8 Mpsi). I suspect the tangency between the flat and circular geometry plays a role here.<\/p>\n

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I have been able to simplify the problem into a simple geometry. In the attached example the singularity does not really affect the max principle stress, but the actual blade is asymmetric and therefore the high stress is very close to the singularity corner. The high stress points coincidentally have high penetration. I have tried the following with no success:<\/p>\n

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