{"id":382320,"date":"2024-09-11T13:42:40","date_gmt":"2024-09-11T13:42:40","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/psd-random-vibration-and-acceleration-on-a-body-harmonic-response\/"},"modified":"2024-10-02T13:18:35","modified_gmt":"2024-10-02T13:18:35","slug":"psd-random-vibration-and-acceleration-on-a-body-harmonic-response","status":"answered","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/psd-random-vibration-and-acceleration-on-a-body-harmonic-response\/","title":{"rendered":"PSD (random vibration) and Acceleration on a body (harmonic response)"},"content":{"rendered":"<p>&lt;p&gt;Hello,&lt;\/p&gt;&lt;p&gt;I have a structure that holds a motor with a cantilever arm, as you can see in the image.&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/11-09-2024-1726061975-mceclip0.png\" \/>&lt;\/p&gt;&lt;p&gt;I have to ensure that the structure can withstand the vibrations generated by the motor when it is running. To do this I have to perform a Random Vibration analysis. How can I insert the PSD into the motor and not into the support?&lt;\/p&gt;&lt;p&gt;In addition to the PSD, I also have to check against acceleration peaks between different frequencies. This would be done with a harmonic analysis. How can I insert the acceleration only into the motor instead of all the bodies? Well, it is the motor that generates these excitations.&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-382320","topic","type-topic","status-answered","hentry","topic-tag-acceleration-1","topic-tag-aerospace-engineering-1","topic-tag-engine-1","topic-tag-harmonic","topic-tag-harmonic-response","topic-tag-modal","topic-tag-psd","topic-tag-random","topic-tag-random-vibration"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["245530","20905"],"_bbp_author_ip":["62.82.24.194"],"_btv_view_count":["840"],"_bbp_topic_status":["answered"],"_bbp_likes_count":["1"],"_bbp_topic_id":["382320"],"_bbp_forum_id":["27791"],"_bbp_engagement":["20905","245530"],"_bbp_voice_count":["2"],"_bbp_last_reply_id":["387190"],"_bbp_last_active_id":["387190"],"_bbp_last_active_time":["2024-09-26 16:19:28"]},"test":"mihai-riceanhotmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/382320","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":1,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/382320\/revisions"}],"predecessor-version":[{"id":387829,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/382320\/revisions\/387829"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=382320"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}