{"id":377484,"date":"2024-08-07T06:23:04","date_gmt":"2024-08-07T06:23:04","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/377484\/"},"modified":"2024-08-09T07:48:26","modified_gmt":"2024-08-09T07:48:26","slug":"377484","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/377484\/","title":{"rendered":"Reply To: Creating no-penetration contacts for objects in modal acoustics"},"content":{"rendered":"<p>&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Hi Deven,&lt;\/p&gt;&lt;p&gt;To model contact between 2 bodies which have intial seperation, you can use &lsquo;stabilization damping factor&rsquo; in contact. The stabilization damping factor provides a certain resistance to damp the relative motion between the contacting surfaces and prevents rigid body motion. The stabilization damping factor works similar as defining a spring between 2 bodies with a very small stiffness which will hold the bodies together without significantly affecting the stiffness of the system.&nbsp;&lt;br&gt;You can create manual contacts to overcome your issue with automatic contacts.&lt;br&gt;For no penetration, you can use &lsquo;Normal Lagrange&rsquo; formulation. Normal lagrange enforces zero penetration when contact is closed making use of a Lagrange multiplier on the normal direction and a penalty method in the tangential direction. Refer to this article in Ansys help for more info on Advanced contact settings:&nbsp;<a href=\"https:\/\/ansyshelp.ansys.com\/account\/secured?returnurl=\/Views\/Secured\/corp\/v242\/en\/wb_sim\/ds_Contact_Advanced.html\" rel=\"external noopener noreferrer nofollow\">9.6.3.3. Advanced Settings (ansys.com)<\/a>&lt;br&gt;All these settings work for prestress static analysis.&lt;\/p&gt;&lt;p&gt;You can take these FREE ansys innovation courses to learn more about contact mechanics and best practices: <a href=\"https:\/\/innovationspace.ansys.com\/product\/prevent-rigid-body-motion-in-contact\/\" rel=\"external noopener noreferrer nofollow\">Rigid Body Motion in Contact | Ansys Innovation Courses<\/a>, <a href=\"https:\/\/innovationspace.ansys.com\/product\/fundamental-topics-in-contact\/\" rel=\"external noopener noreferrer nofollow\">Fundamental Topics in Contact | Ansys Innovation Courses<\/a>, <a href=\"https:\/\/innovationspace.ansys.com\/product\/contact-mechanics\/\" rel=\"external noopener noreferrer nofollow\">Contact Mechanics | Ansys Innovation Courses<\/a>&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-377484","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi Deven,To model contact between 2 bodies which have intial seperation, you can use \u2018stabilization damping factor\u2019 in contact. The stabilization damping factor provides a certain resistance to damp the relative motion between the contacting surfaces and prevents rigid body motion. The stabilization damping factor works similar as defining a spring between 2 bodies with\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/377484\/\" \/>\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 Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Reply To: Creating no-penetration contacts for objects in modal acoustics | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hi Deven,To model contact between 2 bodies which have intial seperation, you can use \u2018stabilization damping factor\u2019 in contact. The stabilization damping factor provides a certain resistance to damp the relative motion between the contacting surfaces and prevents rigid body motion. The stabilization damping factor works similar as defining a spring between 2 bodies with\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/377484\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-08-07T06:23:04+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-08-09T07:48:26+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: Creating no-penetration contacts for objects in modal acoustics | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hi Deven,To model contact between 2 bodies which have intial seperation, you can use \u2018stabilization damping factor\u2019 in contact. 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The stabilization damping factor provides a certain resistance to damp the relative motion between the contacting surfaces and prevents rigid body motion. The stabilization damping factor works similar as defining a spring between 2 bodies with","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/377484\/","article:published_time":"2024-08-07T06:23:04+00:00","article:modified_time":"2024-08-09T07:48:26+00:00","twitter:card":"summary_large_image","twitter:title":"Reply To: Creating no-penetration contacts for objects in modal acoustics | Ansys Learning Forum","twitter:description":"Hi Deven,To model contact between 2 bodies which have intial seperation, you can use \u2018stabilization damping factor\u2019 in contact. The stabilization damping factor provides a certain resistance to damp the relative motion between the contacting surfaces and prevents rigid body motion. 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