{"id":359799,"date":"2024-04-01T12:12:41","date_gmt":"2024-04-01T12:12:41","guid":{"rendered":"\/forum\/forums\/reply\/359799\/"},"modified":"2024-04-01T12:12:41","modified_gmt":"2024-04-01T12:12:41","slug":"359799","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/359799\/","title":{"rendered":"Reply To: Creep analysis &#8211; Linear and Quadratic mesh"},"content":{"rendered":"<p>&lt;p style=&#8221;margin: 0in; font-family: Calibri; font-size: 11.0pt;&#8221;&gt;Hello,&lt;\/p&gt;&lt;p style=&#8221;margin: 0in; font-family: Calibri; font-size: 11.0pt;&#8221;&gt;&nbsp;&lt;\/p&gt;&lt;p style=&#8221;margin: 0in; font-family: Calibri; font-size: 11.0pt;&#8221;&gt;When deciding whether to use linear or quadratic mesh for a creep analysis, it&#8217;s important to consider the specific requirements of your analysis.&lt;\/p&gt;&lt;p style=&#8221;margin: 0in; font-family: Calibri; font-size: 11.0pt;&#8221;&gt;According to the Ansys documentation, in nonlinear structural analyses, which would include creep analysis, you will usually obtain better accuracy at less expense if you use a fine mesh of linear elements rather than a comparable coarse mesh of quadratic elements.&lt;\/p&gt;&lt;p style=&#8221;margin: 0in; font-family: Calibri; font-size: 11.0pt;&#8221;&gt;URL:&lt;span style=&#8221;mso-spacerun: yes;&#8221;&gt;&nbsp; &lt;\/span&gt;<a href=\"https:\/\/ansyshelp.ansys.com\/Views\/Secured\/corp\/v232\/en\/ans_mod\/Hlp_G_MOD2_4.html\">https:\/\/ansyshelp.ansys.com\/Views\/Secured\/corp\/v232\/en\/ans_mod\/Hlp_G_MOD2_4.html<\/a>.&lt;\/p&gt;&lt;p style=&#8221;margin: 0in; font-family: Calibri; font-size: 11.0pt;&#8221;&gt;&nbsp;&lt;\/p&gt;&lt;p style=&#8221;margin: 0in; font-family: Calibri; font-size: 11.0pt;&#8221;&gt;However, quadratic elements are recommended when Tetrahedral elements are meshing solid bodies or for shell elements on surface bodies with curved edges.&lt;\/p&gt;&lt;p style=&#8221;margin: 0in; font-family: Calibri; font-size: 11.0pt;&#8221;&gt;Ultimately, the choice between linear and quadratic elements should be based on the geometry of the model, the type of analysis, and the desired accuracy.&lt;\/p&gt;&lt;p style=&#8221;margin: 0in; font-family: Calibri; font-size: 11.0pt;&#8221;&gt;For a creep analysis, if the geometry is not excessively curved and a high level of accuracy is required, a fine mesh of linear elements might be more cost-effective.&lt;\/p&gt;&lt;p style=&#8221;margin: 0in; font-family: Calibri; font-size: 11.0pt;&#8221;&gt;If the geometry has significant curvature, quadratic elements might be more suitable to capture the curvature accurately.&lt;\/p&gt;&lt;p style=&#8221;margin: 0in; font-family: Calibri; font-size: 11.0pt;&#8221;&gt;On your analysis, where the number of elements on both models is the same, <strong>quadratic mesh<\/strong> is expected to yield more accurate results.&lt;\/p&gt;&lt;p style=&#8221;margin: 0in; font-family: Calibri; font-size: 11.0pt;&#8221;&gt;Then, performing a mesh sensitivity analysis is recommended to determine a satisfying level of accuracy for your application.&lt;\/p&gt;&lt;p style=&#8221;margin: 0in; font-family: Calibri; font-size: 11.0pt;&#8221;&gt;&nbsp;&lt;\/p&gt;&lt;p style=&#8221;margin: 0in; font-family: Calibri; font-size: 11.0pt;&#8221;&gt;Kind Regards,&lt;\/p&gt;&lt;p style=&#8221;margin: 0in; font-family: Calibri; font-size: 11.0pt;&#8221;&gt;Giorgos&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-359799","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/359799","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/reply"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/359799\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=359799"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}