{"id":235364,"date":"2022-09-15T14:15:08","date_gmt":"2022-09-15T14:15:08","guid":{"rendered":"\/forum\/forums\/topic\/artefacts-between-contact-surfaces-in-mechanical\/"},"modified":"2022-09-22T23:10:39","modified_gmt":"2022-09-22T23:10:39","slug":"artefacts-between-contact-surfaces-in-mechanical","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/artefacts-between-contact-surfaces-in-mechanical\/","title":{"rendered":"Artefacts between contact surfaces in mechanical"},"content":{"rendered":"

Hi,<\/p>\n

I’ve been struggling with the simulation for a while, trying multiple combinations of the contact parameters to reduce  the penetration between 2 objects but now that the penetration is reduced, the target surface appears very bumpy (what I assume is artefact) but because of that I can’t re-use the mesh in another simualtion. <\/p>\n

my contact is frictional (you can imagine a head growing in a partly restrictive helmet) some areas are already in contact when the heead starts growing. The parameters I’ve defined so far are:<\/p>\n

1) detection method: pure penalty<\/p>\n

2) small sliding: off<\/p>\n

3) Normal stiffness:  1<\/p>\n

4) interface treatment: adjust to touch <\/p>\n

I’ve tried changing the pinball radius but it only increases the simulation time (so far around 14 hours)<\/p>\n

Any ideas or suggestions are very welcome!<\/p>\n

Thanks \ud83d\ude42<\/p>\n

Lara<\/p>\n","protected":false},"template":"","class_list":["post-235364","topic","type-topic","status-closed","hentry","topic-tag-ansysworkbench-ansys-staticstructural","topic-tag-ansys-mechanical","topic-tag-frictional-contact","topic-tag-non-penetrationcontact-1"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t