{"id":435368,"date":"2025-06-25T11:34:00","date_gmt":"2025-06-25T11:34:00","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/normal-stress-issue-of-random-vibration\/"},"modified":"2025-06-25T11:34:00","modified_gmt":"2025-06-25T11:34:00","slug":"normal-stress-issue-of-random-vibration","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/normal-stress-issue-of-random-vibration\/","title":{"rendered":"normal stress issue of random vibration"},"content":{"rendered":"<p>&lt;p&gt;Hello guys. I&lt;span style=&#8221;font-size: 14pt;&#8221;&gt;&nbsp;built a space frame structure model with beam 188 element and run random vibration analysis on it. But the normal stres&lt;\/span&gt;&lt;span style=&#8221;font-size: 14pt;&#8221;&gt;s distribution seems to be wrong. Can u help me find the possible reason ?&nbsp;&lt;\/span&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/06\/25-06-2025-1750851099-stess_cloud.png\" alt=\"\" \/>&lt;\/p&gt;&lt;p&gt;I choose 9 bottom point as fixed support and apply displacement psd on Zdirection.&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-435368","topic","type-topic","status-publish","hentry","topic-tag-beam-elements","topic-tag-random-vibration"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27791"],"_bbp_topic_id":["435368"],"_bbp_subscription":["565998","20905"],"_bbp_author_ip":["202.120.42.219"],"_bbp_last_reply_id":["435464"],"_bbp_last_active_id":["435464"],"_bbp_last_active_time":["2025-06-26 13:00:57"],"_bbp_reply_count":["6"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["565998","20905"],"_btv_view_count":["165"],"_bbp_topic_status":["unanswered"]},"test":"705616496930816c4f6899e16ba58adb7c2c86e7"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/435368","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\/435368\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=435368"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}