{"id":374802,"date":"2024-08-02T02:54:56","date_gmt":"2024-08-02T02:54:56","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/questions-about-the-circular-symmetric-use-of-the-disk-structure\/"},"modified":"2024-08-02T02:54:56","modified_gmt":"2024-08-02T02:54:56","slug":"questions-about-the-circular-symmetric-use-of-the-disk-structure","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/questions-about-the-circular-symmetric-use-of-the-disk-structure\/","title":{"rendered":"Questions about the circular symmetric use of the disk structure"},"content":{"rendered":"<ol>\n<li>I used a single sector to calculate the modal of the whole bladed disk under each pitch diameter by cyclic symmetry. I extracted the mass and stiffness matrix of the model after applying cyclic symmetry. The frequency obtained is completely different from the natural frequency without applying cyclic symmetry, and is roughly the same as the frequency calculated by APDL. However, due to the frequency of each pitch is basically the same, I can not be clear which pitch is the extracted mass and stiffness matrix.<\/li>\n<li>I want to extract the modeshape data under all pitch diameters. I calculated the first 8 modes under each pitch diameter, and calculated a total of 6 pitch diameters. But I can only extract 423 * 16 matrix. ( 423 is the model degree of freedom ) I don &#8216;t know how to get all the modeshapes<\/li>\n<\/ol>\n","protected":false},"template":"","class_list":["post-374802","topic","type-topic","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=\"I used a single sector to calculate the modal of the whole bladed disk under each pitch diameter by cyclic symmetry. I extracted the mass and stiffness matrix of the model after applying cyclic symmetry. The frequency obtained is completely different from the natural frequency without applying cyclic symmetry, and is roughly the same as\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/questions-about-the-circular-symmetric-use-of-the-disk-structure\/\" \/>\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=\"Questions about the circular symmetric use of the disk structure | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"I used a single sector to calculate the modal of the whole bladed disk under each pitch diameter by cyclic symmetry. I extracted the mass and stiffness matrix of the model after applying cyclic symmetry. The frequency obtained is completely different from the natural frequency without applying cyclic symmetry, and is roughly the same as\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/questions-about-the-circular-symmetric-use-of-the-disk-structure\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-08-02T02:54:56+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-08-02T02:54:56+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Questions about the circular symmetric use of the disk structure | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"I used a single sector to calculate the modal of the whole bladed disk under each pitch diameter by cyclic symmetry. I extracted the mass and stiffness matrix of the model after applying cyclic symmetry. The frequency obtained is completely different from the natural frequency without applying cyclic symmetry, and is roughly the same as\" \/>\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\\\/forum\\\/forums\\\/topic\\\/questions-about-the-circular-symmetric-use-of-the-disk-structure\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/questions-about-the-circular-symmetric-use-of-the-disk-structure\\\/#listItem\",\"name\":\"Questions about the circular symmetric use of the disk structure\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/questions-about-the-circular-symmetric-use-of-the-disk-structure\\\/#listItem\",\"position\":3,\"name\":\"Questions about the circular symmetric use of the disk structure\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/questions-about-the-circular-symmetric-use-of-the-disk-structure\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/questions-about-the-circular-symmetric-use-of-the-disk-structure\\\/\",\"name\":\"Questions about the circular symmetric use of the disk structure | Ansys Learning Forum\",\"description\":\"I used a single sector to calculate the modal of the whole bladed disk under each pitch diameter by cyclic symmetry. I extracted the mass and stiffness matrix of the model after applying cyclic symmetry. The frequency obtained is completely different from the natural frequency without applying cyclic symmetry, and is roughly the same as\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/questions-about-the-circular-symmetric-use-of-the-disk-structure\\\/#breadcrumblist\"},\"datePublished\":\"2024-08-02T02:54:56+00:00\",\"dateModified\":\"2024-08-02T02:54:56+00:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"Questions about the circular symmetric use of the disk structure | Ansys Learning Forum","description":"I used a single sector to calculate the modal of the whole bladed disk under each pitch diameter by cyclic symmetry. I extracted the mass and stiffness matrix of the model after applying cyclic symmetry. The frequency obtained is completely different from the natural frequency without applying cyclic symmetry, and is roughly the same as","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/questions-about-the-circular-symmetric-use-of-the-disk-structure\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/questions-about-the-circular-symmetric-use-of-the-disk-structure\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","position":1,"name":"Home","item":"https:\/\/innovationspace.ansys.com\/forum","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","position":2,"name":"Topics","item":"https:\/\/innovationspace.ansys.com\/forum\/topics\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/questions-about-the-circular-symmetric-use-of-the-disk-structure\/#listItem","name":"Questions about the circular symmetric use of the disk structure"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/questions-about-the-circular-symmetric-use-of-the-disk-structure\/#listItem","position":3,"name":"Questions about the circular symmetric use of the disk structure","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","name":"Topics"}}]},{"@type":"Organization","@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization","name":"Ansys Learning Forum","description":"Ansys Innovation Space","url":"https:\/\/innovationspace.ansys.com\/forum\/"},{"@type":"WebPage","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/questions-about-the-circular-symmetric-use-of-the-disk-structure\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/questions-about-the-circular-symmetric-use-of-the-disk-structure\/","name":"Questions about the circular symmetric use of the disk structure | Ansys Learning Forum","description":"I used a single sector to calculate the modal of the whole bladed disk under each pitch diameter by cyclic symmetry. I extracted the mass and stiffness matrix of the model after applying cyclic symmetry. The frequency obtained is completely different from the natural frequency without applying cyclic symmetry, and is roughly the same as","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/questions-about-the-circular-symmetric-use-of-the-disk-structure\/#breadcrumblist"},"datePublished":"2024-08-02T02:54:56+00:00","dateModified":"2024-08-02T02:54:56+00:00"},{"@type":"WebSite","@id":"https:\/\/innovationspace.ansys.com\/forum\/#website","url":"https:\/\/innovationspace.ansys.com\/forum\/","name":"Ansys Learning Forum","description":"Ansys Innovation Space","inLanguage":"en-US","publisher":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization"}}]},"og:locale":"en_US","og:site_name":"Ansys Learning Forum | Ansys Innovation Space","og:type":"article","og:title":"Questions about the circular symmetric use of the disk structure | Ansys Learning Forum","og:description":"I used a single sector to calculate the modal of the whole bladed disk under each pitch diameter by cyclic symmetry. I extracted the mass and stiffness matrix of the model after applying cyclic symmetry. The frequency obtained is completely different from the natural frequency without applying cyclic symmetry, and is roughly the same as","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/questions-about-the-circular-symmetric-use-of-the-disk-structure\/","article:published_time":"2024-08-02T02:54:56+00:00","article:modified_time":"2024-08-02T02:54:56+00:00","twitter:card":"summary_large_image","twitter:title":"Questions about the circular symmetric use of the disk structure | Ansys Learning Forum","twitter:description":"I used a single sector to calculate the modal of the whole bladed disk under each pitch diameter by cyclic symmetry. I extracted the mass and stiffness matrix of the model after applying cyclic symmetry. The frequency obtained is completely different from the natural frequency without applying cyclic symmetry, and is roughly the same as"},"aioseo_meta_data":{"post_id":"374802","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":"content","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":true,"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":"2024-10-28 16:34:33","updated":"2026-09-16 16:52:17","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\/forum\" 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\/forum\/topics\/\" title=\"Topics\">Topics<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tQuestions about the circular symmetric use of the disk structure\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/innovationspace.ansys.com\/forum"},{"label":"Topics","link":"https:\/\/innovationspace.ansys.com\/forum\/topics\/"},{"label":"Questions about the circular symmetric use of the disk structure","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/questions-about-the-circular-symmetric-use-of-the-disk-structure\/"}],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["442789"],"_bbp_author_ip":["192.74.229.115"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["240"],"_bbp_topic_status":["unanswered"],"_bbp_notification_enabled":["442789","442789"],"_bbp_topic_id":["374802"],"_bbp_forum_id":["27791"],"_bbp_engagement":["442789"],"_bbp_voice_count":["1"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["374803"],"_bbp_last_active_id":["374803"],"_bbp_last_active_time":["2024-08-02 02:58:22"]},"test":"2401652014qq-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/374802","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\/374802\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=374802"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}