{"id":458893,"date":"2026-05-27T05:22:54","date_gmt":"2026-05-27T05:22:54","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fillet-weld-static-strength-results-accuracy\/"},"modified":"2026-05-27T05:22:54","modified_gmt":"2026-05-27T05:22:54","slug":"fillet-weld-static-strength-results-accuracy","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fillet-weld-static-strength-results-accuracy\/","title":{"rendered":"Fillet weld static strength results accuracy"},"content":{"rendered":"<p>&lt;p&gt;I am studying static strength of fillet weld according to eurocode, (1993-1-8) which suggests studying stresses at the throat thickness mid-line (a-dimension). I have a few options that came to my mind but neither one seems quite accurate. I have bilinear material, 3D geometry and nonlinear analysis. stresses are far beyond yield but below UTS. Nodal forces = ON. Tet mesh with 6 elements through-thickness overall.&nbsp;&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2026\/05\/27-05-2026-1779858171-mceclip0.png\" width=\"328\" height=\"154\" \/>&lt;\/p&gt;&lt;p&gt;I came up with these:&lt;\/p&gt;&lt;p&gt;1: splitting geometry in half and using bonded contact to capture reaction forces&lt;\/p&gt;&lt;p&gt;2: splitting geometry in half and using shared topology to connect pieces and capture force on the splitting surface&lt;\/p&gt;&lt;p&gt;3: a single fillet, using construction surface to capture stress components&lt;\/p&gt;&lt;p&gt;4: a single fillet, using construction surface to caputre force components with force probe.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Here&#8217;s the construction surface for options 3 and 4. My issue is that with option 4 the extraction options &#8220;nodes on surface&#8221;, &#8220;nodes on positive side&#8221; and &#8220;nodes on negative side&#8221; give remarkably different results and it seems quite unaccurate.&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2026\/05\/27-05-2026-1779858732-mceclip1.png\" \/>&lt;\/p&gt;&lt;p&gt;My concern with option 1 is that nonlinearity is not captured accurately enough due to material plasticization and bonded contact gives misleading results. share topology seems somewhat reasonable but I am still not sure about accuracy. Option 3 also seems quite robust and gives a clear stress mapping instead of vectors as in option 4, but still not sure about the accuracy.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;So, I would appreciate some help and shared experience. My goal is to get as accurate results as possible. Thank you in advance :)&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-458893","topic","type-topic","status-publish","hentry","topic-tag-simulationaccuracy-1","topic-tag-surface-1","topic-tag-weld","topic-tag-welding","topic-tag-Wrongresults-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27791"],"_bbp_topic_id":["458893"],"_bbp_author_ip":["87.94.41.131"],"_bbp_last_reply_id":["0"],"_bbp_last_active_id":["458893"],"_bbp_last_active_time":["2026-05-27 05:22:54"],"_bbp_reply_count":["0"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["1"],"_bbp_engagement":["614911"],"_btv_view_count":["21"],"_bbp_topic_status":["unanswered"]},"test":"rileino2001gmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/458893","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/458893\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=458893"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}