{"id":389318,"date":"2024-10-11T19:17:58","date_gmt":"2024-10-11T19:17:58","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/stress-singularity-appearing-at-location-of-anticipated-max-stress\/"},"modified":"2024-10-11T19:17:58","modified_gmt":"2024-10-11T19:17:58","slug":"stress-singularity-appearing-at-location-of-anticipated-max-stress","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/stress-singularity-appearing-at-location-of-anticipated-max-stress\/","title":{"rendered":"Stress Singularity Appearing at Location of Anticipated Max Stress"},"content":{"rendered":"<p>&lt;p class=&#8221;MsoNormal&#8221;&gt;I have a part that I am simulating in a Static Structural analysis (see figure 1-3) and I am attempting to validate against a hand calculation (Roark&#8217;s 7th Ed. Table 11.2 Case 10b: A circular flat plate with a distributed uniform pressure and fixed ends [Compression Only Support C is on the front and the back of the shoulder in figure 1]). They agree (enough) on the stress at the center of the plate. The problem is, the hand calc indicates that the max stress will be at the edge of the boundary conditions; and unfortunately, I have a singularity in the simulation at that location. I then made the simplified model that the hand calc is actually quantifying (see figure 4-5) to try to see if I could come up with some correlation method but I get the same singularity at the edge of the boundary condition (the entirety of both the front and back edge in figure 5) there too. In the actual model, I tried reducing the contact stiffness for the compression only supports, and modifying the geometry (moving the split line out and in, removing it, adding a fillet to the entrant corner there) but all to no avail. I would take the hand calc and move on but I have to produce a report that shows mesh independent convergence at the max stress location. Not sure what to do, anybody got any recommendations?&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/10\/11-10-2024-1728674186-Actual Model - Loads.Constraints.JPG\" alt=\"\" width=\"449\" height=\"368\" \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/10\/11-10-2024-1728674117-Actual Model - Stress.JPG\" alt=\"\" width=\"455\" height=\"368\" \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/10\/11-10-2024-1728674206-Actual Model - Stress, Zoom.JPG\" alt=\"\" width=\"327\" height=\"368\" \/>&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/10\/11-10-2024-1728674230-Simplified Model - Loads.Constraints.JPG\" alt=\"\" width=\"455\" height=\"432\" \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/10\/11-10-2024-1728674243-Simplified Model - Stress.JPG\" alt=\"\" width=\"465\" height=\"433\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-389318","topic","type-topic","status-publish","hentry","topic-tag-boundary-conditions","topic-tag-stress-singularity"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"I have a part that I am simulating in a Static Structural analysis (see figure 1-3) and I am attempting to validate against a hand calculation (Roark&#039;s 7th Ed. Table 11.2 Case 10b: A circular flat plate with a distributed uniform pressure and fixed ends [Compression Only Support C is on the front and\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/stress-singularity-appearing-at-location-of-anticipated-max-stress\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Stress Singularity Appearing at Location of Anticipated Max Stress | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"I have a part that I am simulating in a Static Structural analysis (see figure 1-3) and I am attempting to validate against a hand calculation (Roark&#039;s 7th Ed. 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