{"id":158149,"date":"2022-06-06T09:58:49","date_gmt":"2022-06-06T09:58:49","guid":{"rendered":"\/knowledge\/forums\/topic\/is-the-damping-value-specified-by-the-dmpstr-command-related-to-the-value-specified-by-the-dmprat-command-in-a-full-harmonic-analysis\/"},"modified":"2022-06-06T09:58:49","modified_gmt":"2022-06-06T09:58:49","slug":"is-the-damping-value-specified-by-the-dmpstr-command-related-to-the-value-specified-by-the-dmprat-command-in-a-full-harmonic-analysis","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/is-the-damping-value-specified-by-the-dmpstr-command-related-to-the-value-specified-by-the-dmprat-command-in-a-full-harmonic-analysis\/","title":{"rendered":"Is the damping value specified by the DMPSTR command related to the value specified by the DMPRAT command in a full harmonic analysis?"},"content":{"rendered":"<p>Yes, the DMPSTR value is equivalent to 2 times the value specifed by DMPRAT in a full harmonic analysis.  See the explanation from development about why we have switched to DMPSTR for Full Harmonic: Prior to the documentation of the DMPSTR command, we *interpreted* DMPRAT as structural damping in a FULL harmonic analysis and included a factor of 2:<br \/>C=2*DMPRAT\/omega*[K]<br \/>DMPRAT was never a &#8220;damping ratio&#8221;. When we introduced DMPSTR, it was to clearly state that this was structural damping and to make it consistent with the rest of the engineering community removed the factor of 2:<br \/>C=DMPSTR\/omega*[K]<\/p>\n","protected":false},"template":"","class_list":["post-158149","topic","type-topic","status-publish","hentry","topic-tag-damping-value","topic-tag-dmpstr"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_last_active_time":["06-06-2022 20:20"],"_bbp_forum_id":["27792"],"_btv_view_count":["1195"],"_bbp_likes_count":["0"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/158149","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/158149\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=158149"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}