{"id":167055,"date":"2023-04-05T14:32:45","date_gmt":"2023-04-05T14:32:45","guid":{"rendered":"\/knowledge\/forums\/topic\/how-to-define-damping-for-a-condensed-part-used-in-rbd\/"},"modified":"2023-07-31T12:32:23","modified_gmt":"2023-07-31T12:32:23","slug":"how-to-define-damping-for-a-condensed-part-used-in-rbd","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-to-define-damping-for-a-condensed-part-used-in-rbd\/","title":{"rendered":"How to define damping for a condensed part used in RBD ?"},"content":{"rendered":"<p>This is doable with a command snippet below each condensed part (with APDL of course).   Be careful, at this level we are only at the generation pass level, therefore the only supported command are the following ones : ALPHAD BETAD MP,ALPD MP,BETD TB,SDAMP,,,,ALPD TB,SDAMP,,,,BETD  Basically, for a 2% damping occuring for instance at 100 hz, we might put BETAD,0.02\/(Pi*100) below the condensed part.  Please also keep in mind that the use pass is performed in RBD and all the existing damping coefficients (for instance &#8220;C&#8221; for any joint) are still available. Special damping features (in the use pass) need to be used and defined with python scripting only (because RBD solver context)<\/p>\n","protected":false},"template":"","class_list":["post-167055","topic","type-topic","status-publish","hentry","topic-tag-4391","topic-tag-mechanical","topic-tag-multibody","topic-tag-structural-dynamics","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=\"This is doable with a command snippet below each condensed part (with APDL of course). Be careful, at this level we are only at the generation pass level, therefore the only supported command are the following ones : ALPHAD BETAD MP,ALPD MP,BETD TB,SDAMP,,,,ALPD TB,SDAMP,,,,BETD Basically, for a 2% damping occuring for instance at 100 hz,\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-to-define-damping-for-a-condensed-part-used-in-rbd\/\" \/>\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=\"How to define damping for a condensed part used in RBD ? | Ansys Knowledge\" \/>\n\t\t<meta property=\"og:description\" content=\"This is doable with a command snippet below each condensed part (with APDL of course). Be careful, at this level we are only at the generation pass level, therefore the only supported command are the following ones : ALPHAD BETAD MP,ALPD MP,BETD TB,SDAMP,,,,ALPD TB,SDAMP,,,,BETD Basically, for a 2% damping occuring for instance at 100 hz,\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-to-define-damping-for-a-condensed-part-used-in-rbd\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2023-04-05T14:32:45+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2023-07-31T12:32:23+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"How to define damping for a condensed part used in RBD ? | Ansys Knowledge\" \/>\n\t\t<meta name=\"twitter:description\" content=\"This is doable with a command snippet below each condensed part (with APDL of course). Be careful, at this level we are only at the generation pass level, therefore the only supported command are the following ones : ALPHAD BETAD MP,ALPD MP,BETD TB,SDAMP,,,,ALPD TB,SDAMP,,,,BETD Basically, for a 2% damping occuring for instance at 100 hz,\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/how-to-define-damping-for-a-condensed-part-used-in-rbd\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/structural-mechanics\\\/#listItem\",\"name\":\"structural-mechanics\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/structural-mechanics\\\/#listItem\",\"position\":3,\"name\":\"structural-mechanics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/structural-mechanics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/how-to-define-damping-for-a-condensed-part-used-in-rbd\\\/#listItem\",\"name\":\"How to define damping for a condensed part used in RBD ?\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/how-to-define-damping-for-a-condensed-part-used-in-rbd\\\/#listItem\",\"position\":4,\"name\":\"How to define damping for a condensed part used in RBD ?\",\"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\\\/how-to-define-damping-for-a-condensed-part-used-in-rbd\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/how-to-define-damping-for-a-condensed-part-used-in-rbd\\\/\",\"name\":\"How to define damping for a condensed part used in RBD ? | Ansys Knowledge\",\"description\":\"This is doable with a command snippet below each condensed part (with APDL of course). Be careful, at this level we are only at the generation pass level, therefore the only supported command are the following ones : ALPHAD BETAD MP,ALPD MP,BETD TB,SDAMP,,,,ALPD TB,SDAMP,,,,BETD Basically, for a 2% damping occuring for instance at 100 hz,\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/how-to-define-damping-for-a-condensed-part-used-in-rbd\\\/#breadcrumblist\"},\"datePublished\":\"2023-04-05T14:32:45+00:00\",\"dateModified\":\"2023-07-31T12:32:23+00:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#website\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/\",\"name\":\"Ansys Knowledge\",\"description\":\"Ansys Innovation Space\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#organization\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"How to define damping for a condensed part used in RBD ? | Ansys Knowledge","description":"This is doable with a command snippet below each condensed part (with APDL of course). Be careful, at this level we are only at the generation pass level, therefore the only supported command are the following ones : ALPHAD BETAD MP,ALPD MP,BETD TB,SDAMP,,,,ALPD TB,SDAMP,,,,BETD Basically, for a 2% damping occuring for instance at 100 hz,","canonical_url":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-to-define-damping-for-a-condensed-part-used-in-rbd\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-to-define-damping-for-a-condensed-part-used-in-rbd\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge#listItem","position":1,"name":"Home","item":"https:\/\/innovationspace.ansys.com\/knowledge","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/#listItem","position":2,"name":"Topics","item":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/structural-mechanics\/#listItem","name":"structural-mechanics"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/structural-mechanics\/#listItem","position":3,"name":"structural-mechanics","item":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/structural-mechanics\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-to-define-damping-for-a-condensed-part-used-in-rbd\/#listItem","name":"How to define damping for a condensed part used in RBD ?"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-to-define-damping-for-a-condensed-part-used-in-rbd\/#listItem","position":4,"name":"How to define damping for a condensed part used in RBD ?","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\/how-to-define-damping-for-a-condensed-part-used-in-rbd\/#webpage","url":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-to-define-damping-for-a-condensed-part-used-in-rbd\/","name":"How to define damping for a condensed part used in RBD ? | Ansys Knowledge","description":"This is doable with a command snippet below each condensed part (with APDL of course). Be careful, at this level we are only at the generation pass level, therefore the only supported command are the following ones : ALPHAD BETAD MP,ALPD MP,BETD TB,SDAMP,,,,ALPD TB,SDAMP,,,,BETD Basically, for a 2% damping occuring for instance at 100 hz,","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/knowledge\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-to-define-damping-for-a-condensed-part-used-in-rbd\/#breadcrumblist"},"datePublished":"2023-04-05T14:32:45+00:00","dateModified":"2023-07-31T12:32:23+00:00"},{"@type":"WebSite","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/#website","url":"https:\/\/innovationspace.ansys.com\/knowledge\/","name":"Ansys Knowledge","description":"Ansys Innovation Space","inLanguage":"en-US","publisher":{"@id":"https:\/\/innovationspace.ansys.com\/knowledge\/#organization"}}]},"og:locale":"en_US","og:site_name":"Ansys Knowledge | Ansys Innovation Space","og:type":"article","og:title":"How to define damping for a condensed part used in RBD ? | Ansys Knowledge","og:description":"This is doable with a command snippet below each condensed part (with APDL of course). 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Be careful, at this level we are only at the generation pass level, therefore the only supported command are the following ones : ALPHAD BETAD MP,ALPD MP,BETD TB,SDAMP,,,,ALPD TB,SDAMP,,,,BETD Basically, for a 2% damping occuring for instance at 100 hz,"},"aioseo_meta_data":{"post_id":"167055","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"limit_modified_date":false,"created":"2025-10-17 23:30:54","updated":"2026-07-29 21:22:30","ai":null,"breadcrumb_settings":null,"seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/knowledge\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/\" title=\"Topics\">Topics<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/structural-mechanics\/\" title=\"structural-mechanics\">structural-mechanics<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tHow to define damping for a condensed part used in RBD ?\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":"How to define damping for a condensed part used in RBD ?","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-to-define-damping-for-a-condensed-part-used-in-rbd\/"}],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_last_active_time":["5\/4\/2023 20:20"],"_bbp_forum_id":["27792"],"_bbp_author_ip":["209.182.204.162"],"_btv_view_count":["808"],"siebel_km_number":["2053503"],"product_version":["19"],"km_published_date":["2018-03-09T00:00:00.000Z"],"family":["Structural Mechanics"],"application_name":["Mechanical"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/167055","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\/167055\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=167055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}