{"id":428214,"date":"2025-04-08T02:41:47","date_gmt":"2025-04-08T02:41:47","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ansys-motionstandalone-doe\/"},"modified":"2025-04-08T04:50:30","modified_gmt":"2025-04-08T04:50:30","slug":"ansys-motionstandalone-doe","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ansys-motionstandalone-doe\/","title":{"rendered":"ANSYS Motion(Standalone) DOE"},"content":{"rendered":"<p>&lt;p&gt;&lt;p&gt;&lt;p&gt;&lt;p&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt;I want to use DOE to find a combination of design variables (Damping coefficient, Offset, Stiffness coefficient) that maintains the stability (convergence) of the model and a constant amplitude.&lt;br&gt;&lt;\/span&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt;I created a marker on the axis and created a function expression and set it to PI.&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt;However, when I run DOE, the following error occurs.&lt;br&gt;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&lt;br&gt;&lt;\/span&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt;ANSYS MOTION 2024 R1 &nbsp; &nbsp; 24.10.31023 (build.fc843c69) &nbsp; &nbsp; &nbsp;Mon Apr &nbsp;7 04:09:13 2025 PM&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt; *** ERROR *** &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Mon Apr &nbsp;7 04:09:15 2025 PM&lt;\/span&gt;&lt;br&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt; AN ERROR OCCURRED WHILE CALLING FUNCTION EXPRESSION (MOTION ERROR)&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt; * &lt;ERROR&gt; exception: access violation reading 0x0000000000000008&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt; * FUNCTION EXPRESSION ID &nbsp; = 1&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt; * FUNCTION EXPRESSION NAME = \/Unb_Nor_250402\/FN_002&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt; * FUNCTION EXPRESSION &nbsp; &nbsp; &nbsp;= SQRT(AX(&#8220;\/Pump_shaft\/MK_pump_coup&#8221;, &#8220;\/Pump_shaft\/CM&#8221;)^2 + AY(&#8220;\/Pump_shaft\/MK_pump_coup&#8221;, &#8220;\/Pump_shaft\/CM&#8221;)^2)&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt; * SIMULATION TIME = 0.00000000e+00&lt;br&gt;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&lt;br&gt;&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt;An error occurs when loading the function expression, but the kinematic request of the marker is set as shown in the picture below.&lt;br&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/04\/08-04-2025-1744079875-mceclip0.png\" \/>&lt;br&gt;&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt;I want to know which part is the problem.&lt;br&gt;I use ANSYS motion(Standalone) 24R1.&lt;\/span&gt;&lt;\/p&gt;&lt;\/p&gt;&lt;\/p&gt;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-428214","topic","type-topic","status-publish","hentry","topic-tag-ansysmotion","topic-tag-doe-1","topic-tag-motion-1","topic-tag-motion-setup-1","topic-tag-multibody-2","topic-tag-multibody-dynamics","topic-tag-preprocessing","topic-tag-rigid-body-motion"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27790"],"_bbp_topic_id":["428214"],"_bbp_subscription":["521013","531669"],"_bbp_author_ip":["210.107.186.172"],"_bbp_last_reply_id":["428870"],"_bbp_last_active_id":["428870"],"_bbp_last_active_time":["2025-04-14 15:13:11"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["521013","531669"],"_btv_view_count":["264"],"_bbp_topic_status":["unanswered"],"_edit_last":["521013"],"_bbp_revision_log":["a:3:{i:428215;a:2:{s:6:\"author\";i:521013;s:6:\"reason\";s:0:\"\";}i:428216;a:2:{s:6:\"author\";i:521013;s:6:\"reason\";s:0:\"\";}i:428219;a:2:{s:6:\"author\";i:521013;s:6:\"reason\";s:0:\"\";}}"]},"test":"ljcish26gmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/428214","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":3,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/428214\/revisions"}],"predecessor-version":[{"id":428219,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/428214\/revisions\/428219"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=428214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}