{"id":391668,"date":"2024-10-29T01:45:50","date_gmt":"2024-10-29T01:45:50","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/about-convergence-issue-of-simple-3d-model-applied-large-deflection-option\/"},"modified":"2024-10-29T06:29:40","modified_gmt":"2024-10-29T06:29:40","slug":"about-convergence-issue-of-simple-3d-model-applied-large-deflection-option","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/about-convergence-issue-of-simple-3d-model-applied-large-deflection-option\/","title":{"rendered":"About convergence issue of simple 3D model applied large deflection option"},"content":{"rendered":"<p>&lt;p&gt;&lt;p&gt;Hello!&lt;\/p&gt;&lt;p&gt;I&#8217;m conducting compression test of quarter cylinder&lt;\/p&gt;&lt;p&gt;It is composed by upper press, lower press and quartercylinder&lt;\/p&gt;&lt;p&gt;Cylinder has 8 mm height and it compressed into 4 mm by upper press&lt;\/p&gt;&lt;p&gt;Cylinder has non-linear properties(attatched as picture) and upper, lower press has rigid body(set extreme high young&#8217;s modulus, poisson ratio = 0)&lt;\/p&gt;&lt;p&gt;So, I think deformation has a large value so large deflection option must be checked&lt;\/p&gt;&lt;p&gt;Analysis started and it&#8217;s convergence failed&lt;\/p&gt;&lt;p&gt;Error occured at convergence gauge at 16% and I attached error result picture&lt;\/p&gt;&lt;p&gt;&lt;\/p&gt;&lt;p&gt;I attached analysis condition picture too&lt;\/p&gt;&lt;p&gt;I raise initial substep into 1000 but it was failed too&lt;\/p&gt;&lt;p&gt;With unchecked large deflection option, convergence completed&lt;\/p&gt;&lt;p&gt;How can I converge this problem?&lt;\/p&gt;&lt;p&gt;regard&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/10\/29-10-2024-1730166254-multi linear properties.JPG\" alt=\"\" \/>&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/10\/29-10-2024-1730166333-question picture(modified)(small byte).jpg\" alt=\"\" \/>&lt;\/p&gt;&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/10\/29-10-2024-1730183332-result.JPG\" alt=\"\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-391668","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hello!I&#039;m conducting compression test of quarter cylinderIt is composed by upper press, lower press and quartercylinderCylinder has 8 mm height and it compressed into 4 mm by upper pressCylinder has non-linear properties(attatched as picture) and upper, lower press has rigid body(set extreme high young&#039;s modulus, poisson ratio = 0)So, I think deformation has a large\" 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lower press has rigid body(set extreme high young&#039;s modulus, poisson ratio = 0)So, I think deformation has a large\" \/>\n\t\t<script type=\"application\/ld+json\" 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