{"id":165318,"date":"2023-03-17T09:00:00","date_gmt":"2023-03-17T09:00:00","guid":{"rendered":"\/knowledge\/forums\/topic\/i-imported-an-assembly-from-my-cad-system-into-designmodeler-i-turned-the-assembly-into-a-multibody-part-and-transfered-it-to-simulation-simulation-created-contact-elements-between-the-parts-even\/"},"modified":"2023-07-31T12:31:02","modified_gmt":"2023-07-31T12:31:02","slug":"i-imported-an-assembly-from-my-cad-system-into-designmodeler-i-turned-the-assembly-into-a-multibody-part-and-transfered-it-to-simulation-simulation-created-contact-elements-between-the-parts-even","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/i-imported-an-assembly-from-my-cad-system-into-designmodeler-i-turned-the-assembly-into-a-multibody-part-and-transfered-it-to-simulation-simulation-created-contact-elements-between-the-parts-even\/","title":{"rendered":"I imported an assembly from my CAD system into DesignModeler.  I turned the assembly into a multibody part and transfered it to Simulation.  Simulation created contact elements between the parts even though it was a multibody part.  I found that if I change the facet quality in DM from the default 5 to 10, Simulation recognized the multibody part and no contact is created (Tools > Options > DesignModeler > Graphics > Facet Quality). What&#8217;s wrong?"},"content":{"rendered":"<p>The contact detection algorithm in Simulation is based on the tessellation of the geometry.  The contact detection runs even when a multibody part is imported.  If the topology between parts differs beyond a certain extent Simulation will place contact at the interface since continuous meshing is not possible.  Most CAD systems have controls over the topology (or tessellation) that they use.  Often this is a setting under the graphics controls.  CAD users sometimes set this resolution to a lower value for faster graphics controls but don&#8217;t realize this will actually affect the resolution of the parts that are exported.  Increasing the tessellation from the CAD source should result in expected behavior for other multibody parts.<\/p>\n","protected":false},"template":"","class_list":["post-165318","topic","type-topic","status-publish","hentry","topic-tag-4877","topic-tag-general","topic-tag-mechanical-f-simulation","topic-tag-structural-mechanics"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"The contact detection algorithm in Simulation is based on the tessellation of the geometry. The contact detection runs even when a multibody part is imported. If the topology between parts differs beyond a certain extent Simulation will place contact at the interface since continuous meshing is not possible. Most CAD systems have controls over the\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/i-imported-an-assembly-from-my-cad-system-into-designmodeler-i-turned-the-assembly-into-a-multibody-part-and-transfered-it-to-simulation-simulation-created-contact-elements-between-the-parts-even\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Knowledge | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"I imported an assembly from my CAD system into DesignModeler. I turned the assembly into a multibody part and transfered it to Simulation. Simulation created contact elements between the parts even though it was a multibody part. I found that if I change the facet quality in DM from the default 5 to 10, Simulation recognized the multibody part and no contact is created (Tools &gt; Options &gt; DesignModeler &gt; Graphics &gt; Facet Quality). What\u2019s wrong? | Ansys Knowledge\" \/>\n\t\t<meta property=\"og:description\" content=\"The contact detection algorithm in Simulation is based on the tessellation of the geometry. The contact detection runs even when a multibody part is imported. If the topology between parts differs beyond a certain extent Simulation will place contact at the interface since continuous meshing is not possible. Most CAD systems have controls over the\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/i-imported-an-assembly-from-my-cad-system-into-designmodeler-i-turned-the-assembly-into-a-multibody-part-and-transfered-it-to-simulation-simulation-created-contact-elements-between-the-parts-even\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2023-03-17T09:00:00+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2023-07-31T12:31:02+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"I imported an assembly from my CAD system into DesignModeler. I turned the assembly into a multibody part and transfered it to Simulation. Simulation created contact elements between the parts even though it was a multibody part. I found that if I change the facet quality in DM from the default 5 to 10, Simulation recognized the multibody part and no contact is created (Tools &gt; Options &gt; DesignModeler &gt; Graphics &gt; Facet Quality). What\u2019s wrong? | Ansys Knowledge\" \/>\n\t\t<meta name=\"twitter:description\" content=\"The contact detection algorithm in Simulation is based on the tessellation of the geometry. The contact detection runs even when a multibody part is imported. If the topology between parts differs beyond a certain extent Simulation will place contact at the interface since continuous meshing is not possible. 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I turned the assembly into a multibody part and transfered it to Simulation.  Simulation created contact elements between the parts even though it was a multibody part.  I found that if I change the facet quality in DM from the default 5 to 10, Simulation recognized the multibody part and no contact is created (Tools > Options > DesignModeler > Graphics > Facet Quality). What&#8217;s wrong?"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/i-imported-an-assembly-from-my-cad-system-into-designmodeler-i-turned-the-assembly-into-a-multibody-part-and-transfered-it-to-simulation-simulation-created-contact-elements-between-the-parts-even\/#listItem","position":4,"name":"I imported an assembly from my CAD system into DesignModeler.  I turned the assembly into a multibody part and transfered it to Simulation.  Simulation created contact elements between the parts even though it was a multibody part.  I found that if I change the facet quality in DM from the default 5 to 10, Simulation recognized the multibody part and no contact is created (Tools > Options > DesignModeler > Graphics > Facet Quality). What&#8217;s wrong?","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/structural-mechanics\/#listItem","name":"structural-mechanics"}}]},{"@type":"Organization","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/#organization","name":"Ansys Knowledge","description":"Ansys Innovation Space","url":"https:\/\/innovationspace.ansys.com\/knowledge\/"},{"@type":"WebPage","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/i-imported-an-assembly-from-my-cad-system-into-designmodeler-i-turned-the-assembly-into-a-multibody-part-and-transfered-it-to-simulation-simulation-created-contact-elements-between-the-parts-even\/#webpage","url":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/i-imported-an-assembly-from-my-cad-system-into-designmodeler-i-turned-the-assembly-into-a-multibody-part-and-transfered-it-to-simulation-simulation-created-contact-elements-between-the-parts-even\/","name":"I imported an assembly from my CAD system into DesignModeler. I turned the assembly into a multibody part and transfered it to Simulation. Simulation created contact elements between the parts even though it was a multibody part. I found that if I change the facet quality in DM from the default 5 to 10, Simulation recognized the multibody part and no contact is created (Tools > Options > DesignModeler > Graphics > Facet Quality). What\u2019s wrong? | Ansys Knowledge","description":"The contact detection algorithm in Simulation is based on the tessellation of the geometry. The contact detection runs even when a multibody part is imported. If the topology between parts differs beyond a certain extent Simulation will place contact at the interface since continuous meshing is not possible. 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I turned the assembly into a multibody part and transfered it to Simulation. Simulation created contact elements between the parts even though it was a multibody part. I found that if I change the facet quality in DM from the default 5 to 10, Simulation recognized the multibody part and no contact is created (Tools &gt; Options &gt; DesignModeler &gt; Graphics &gt; Facet Quality). What\u2019s wrong? | Ansys Knowledge","og:description":"The contact detection algorithm in Simulation is based on the tessellation of the geometry. The contact detection runs even when a multibody part is imported. If the topology between parts differs beyond a certain extent Simulation will place contact at the interface since continuous meshing is not possible. 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What\u2019s wrong? | Ansys Knowledge","twitter:description":"The contact detection algorithm in Simulation is based on the tessellation of the geometry. The contact detection runs even when a multibody part is imported. If the topology between parts differs beyond a certain extent Simulation will place contact at the interface since continuous meshing is not possible. 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I turned the assembly into a multibody part and transfered it to Simulation.  Simulation created contact elements between the parts even though it was a multibody part.  I found that if I change the facet quality in DM from the default 5 to 10, Simulation recognized the multibody part and no contact is created (Tools &gt; Options &gt; DesignModeler &gt; Graphics &gt; Facet Quality). What\u2019s wrong?\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/innovationspace.ansys.com\/knowledge"},{"label":"Topics","link":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/"},{"label":"structural-mechanics","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/structural-mechanics\/"},{"label":"I imported an assembly from my CAD system into DesignModeler.  I turned the assembly into a multibody part and transfered it to Simulation.  Simulation created contact elements between the parts even though it was a multibody part.  I found that if I change the facet quality in DM from the default 5 to 10, Simulation recognized the multibody part and no contact is created (Tools > Options > DesignModeler > Graphics > Facet Quality). What&#8217;s wrong?","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/i-imported-an-assembly-from-my-cad-system-into-designmodeler-i-turned-the-assembly-into-a-multibody-part-and-transfered-it-to-simulation-simulation-created-contact-elements-between-the-parts-even\/"}],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_last_active_time":["3\/15\/2023 20:20"],"_bbp_forum_id":["27789"],"_bbp_author_ip":["23.56.168.180"],"_btv_view_count":["548"],"siebel_km_number":["579071"],"product_version":["10"],"km_published_date":["2007-02-02T00:00:00.000Z"],"family":["Structural Mechanics"],"application_name":["Mechanical (f. 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