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I am working on s project, where I have to perform Vibration Analysis in the Air compressor Piping system. <\/strong>In this regard I have simulated the fluid (compressed air) flow simulation in FLUENT module. I have also imported the pressure load from FLUENT to HARMONIC RESPONSE module, through “External Data Transfer” Component.<\/p>\n <\/p>\n I know that the compressor running speed is 1200 rpm<\/strong>, which gives me 20 Hz<\/strong> of excitation frequency. I also know that the STRUCTURAL<\/strong> RESONANCE <\/strong>will occur when the Mechanical Natural Frequency (MNF) <\/strong>of the pipe is matching with the excitation frequency. In my case I found the MNF using MODAL<\/strong> analysis. In order to find the vibration amplitude (Frequency Vs Amplitude Curve)which is my requirement, I am going for HARMONIC RESPONSE analysis. In this case I have certain doubts, They are,<\/p>\n <\/p>\n 1.(Fluent (Pressure load) – -> External data –> Harmonic response (Amplitude Vs frequency curve)) <\/strong>Is my procedure right to obtain the Amplitude Vs Frequency Curve? <\/p>\n <\/p>\n 2.While doing so, in harmonic response<\/strong> module as shown in following figure’s bottom “Imported Pressure” region, there is a term called “analysis frequency” what does it mean? How it will affect my result?<\/p>\n <\/p>\n <\/p>\n 3. What does this error (shown in figure) mean? How to solve that? it is shown in following figure,<\/p>\n <\/p>\n <\/p>\n 4. While working on this, I found some solution to solve the above error. It is mentioned that to change the solution method “mode superposition” to “full”. What does these solution methods mean?<\/p>\n <\/p>\n 5. What does the “Phase Angle” mean while obtaining Amplitude Vs Frequency curve, which is shown in figure below,<\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n Thank You.<\/p>\n <\/p>\n Regards, <\/p>\n <\/p>\n Vignesh.<\/p>\n","protected":false},"template":"","class_list":["post-41798","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["13978"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":[null],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["1"],"_btv_view_count":["2008"],"_bbp_subscription":["247588"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["41798"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","173331"],"_bbp_voice_count":["2"],"_bbp_reply_count":["5"],"_bbp_last_reply_id":["108419"],"_bbp_last_active_id":["108419"],"_bbp_last_active_time":["2020-03-20 12:27:28"]},"test":"vigneshkrish333"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/41798","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\/41798\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=41798"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"\"](\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/e2fc4394-bb47-49c4-ba3b-ab64006362dd\/5b1a1e71-f16f-48ca-99ef-ab7f00701549_doubt-2.jpg?width=690&upscale=false\")
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