{"id":166460,"date":"2023-03-17T13:11:57","date_gmt":"2023-03-17T13:11:57","guid":{"rendered":"\/knowledge\/forums\/topic\/how-do-i-prescribe-a-relative-displacement-relative-motion-between-two-bodies-in-ansys-mechanical\/"},"modified":"2023-07-31T12:31:51","modified_gmt":"2023-07-31T12:31:51","slug":"how-do-i-prescribe-a-relative-displacement-relative-motion-between-two-bodies-in-ansys-mechanical","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-do-i-prescribe-a-relative-displacement-relative-motion-between-two-bodies-in-ansys-mechanical\/","title":{"rendered":"How do I prescribe a relative displacement \/ relative motion between two bodies in Ansys Mechanical?"},"content":{"rendered":"

Use a Joint together with a Joint Load to prescribe a relative motion (relative displacement and rotation) between two bodies in Ansys Mechanical as Boundary Condition. See the following link for a table with allowable DOF for applying Joint Loads. https:\/\/ansyshelp.ansys.com\/account\/secured?returnurl=\/Views\/Secured\/corp\/v202\/en\/wb_sim\/ds_load_joint_condition.html Note: Joint Loads can be defined for all Joint Types except fixed, general, universal, and spherical joints. For the prescription of a general relative motion, use a Bushing Joint with no (0) stiffness in all 6 DOF (3 translations and 3 rotations). Then define a Joint Load for each of the 6 DOF to specify the relative motion. Please find a simple example attached (workbench archive). Note: Alternatively, I might be useful to define a contact with tabular contact offset definitions (tabular CNOF). https:\/\/ansyshelp.ansys.com\/account\/secured?returnurl=\/Views\/Secured\/corp\/v202\/en\/ans_ctec\/Hlp_ctec_realkey.html%23stradjin5jla072099 (Defining Real Constants in Tabular Format) Keywords: relative motion, relative displacements, relative rotations<\/p>\n

Attachments:
\n1. RelativeMovementByJointBushing_2019R3.wbpz<\/a><\/p>\n","protected":false},"template":"","class_list":["post-166460","topic","type-topic","status-publish","hentry","topic-tag-2019-r3","topic-tag-mechanical","topic-tag-structural-and-thermal","topic-tag-structural-mechanics"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_last_active_time":["3\/15\/2023 20:20"],"_bbp_forum_id":["27795"],"_bbp_author_ip":["23.56.168.180"],"_btv_view_count":["3683"],"siebel_km_number":["2063094"],"product_version":["2019 R3"],"km_published_date":["2020-08-06T19:36:43.000Z"],"family":["Structural Mechanics"],"application_name":["Mechanical"]},"test":"solution"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/166460","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\/166460\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=166460"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}