{"id":32835,"date":"2019-01-24T03:26:45","date_gmt":"2019-01-24T03:26:45","guid":{"rendered":"\/forum\/forums\/topic\/structural-simulations-with-both-flexible-and-rigid-bodies\/"},"modified":"2019-01-24T03:26:45","modified_gmt":"2019-01-24T03:26:45","slug":"structural-simulations-with-both-flexible-and-rigid-bodies","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/structural-simulations-with-both-flexible-and-rigid-bodies\/","title":{"rendered":"Structural simulations with both flexible and rigid bodies"},"content":{"rendered":"

Hi there,<\/p>\n

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I would like some advice on how to work with rigid bodies in Ansys Workbench in a multi-body, flexible-rigid simulation. <\/p>\n

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I am trying to simulate a rigid ‘rocker’ applying a time and spatially varying contact pressure onto the pavement by rocking back-and-forth, as shown in the image below. Essentially, I am modelling an accelerated-pavement-tester.<\/p>\n

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One way I envisaged doing this, was to split the simulation into two steps:<\/p>\n

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In the first step, I apply a vertical force onto the rigid rocker via its pilot node, which is located at the center of curvature of the bottom rocker surface, as shown below. I will put a frictional contact between the rigid rocker and the pavement surface. Under the vertical load, both the rocker and the pavement surface would be displaced downwards.<\/p>\n

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\"\"<\/p>\n

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In the second step, I will constrain the y-displacement of the pilot-node, thus maintaining contact pressure onto the pavement, while moving the x-location of the pilot node back and forth, as shown below. This should result in a rolling action due to friction between the rocker and pavement.<\/p>\n

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\"\"<\/p>\n

<\/p>\n

 <\/p>\n

<\/p>\n

Does this seem like a sensible way to modelling this? The issue is that I am unsure how to constrain and apply loads to rigid bodies. <\/span><\/p>\n

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I know that their the motion is controlled by one point – in the ANSYS documentation, this is called the ‘pilot node’, with all BC’s applied to that node. However, in Workbench, I cannot find where to define this ‘pilot node’ or how to reference this point when defining BC’s. So far, I could not find this information in the documentation. Does this have to be done in Mechanical APDL?<\/p>\n

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Any help would be much appreciated.<\/p>\n

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Kind regards,<\/p>\n

<\/p>\n

Kai-Yeung<\/p>\n

<\/p>\n

 <\/p>\n

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 <\/p>\n","protected":false},"template":"","class_list":["post-32835","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["5007"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":[null],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0","0","0","0","0"],"_btv_view_count":["4838"],"_bbp_subscription":["238078"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["32835"],"_bbp_forum_id":["27791"],"_bbp_engagement":["69632","160648"],"_bbp_voice_count":["2"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["76064"],"_bbp_last_active_id":["76064"],"_bbp_last_active_time":["2019-01-27 01:34:37"]},"test":"kaiyeungli"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/32835","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":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/32835\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=32835"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}