{"id":157943,"date":"2022-06-06T09:58:07","date_gmt":"2022-06-06T09:58:07","guid":{"rendered":"\/knowledge\/forums\/topic\/what-causes-a-problem-with-units-in-a-derived-expression\/"},"modified":"2022-06-06T09:58:07","modified_gmt":"2022-06-06T09:58:07","slug":"what-causes-a-problem-with-units-in-a-derived-expression","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/what-causes-a-problem-with-units-in-a-derived-expression\/","title":{"rendered":"What causes a problem with units in a derived expression?"},"content":{"rendered":"<p>One would need to make the derived parameter to:  <br \/>1. have all the same units<br \/>2. dimensionless<br \/>or<br \/>3. numerical value<br \/>which means one need to include units in your expression.   Let&#8217;s say P3 is a Reaction Force in N  and we wanted to take the square root of P3, and drive another input Paramter with this value.  Simply entering  &#8220;sqrt(P3)&#8221; gives an error.   One then need to include the units  sqrt(P3*1 [N])<\/p>\n","protected":false},"template":"","class_list":["post-157943","topic","type-topic","status-publish","hentry","topic-tag-derrived-expression","topic-tag-units"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_last_active_time":["06-06-2022 20:20"],"_bbp_forum_id":["27789"],"_btv_view_count":["2505"],"_bbp_likes_count":["0"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/157943","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\/157943\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=157943"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}