{"id":19075,"date":"2025-02-17T11:22:56","date_gmt":"2025-02-17T11:22:56","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=19075"},"modified":"2025-02-17T11:22:56","modified_gmt":"2025-02-17T11:22:56","slug":"computational-study-for-the-design-of-a-hypersonic-panel-flutter-experiment","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2025\/02\/17\/computational-study-for-the-design-of-a-hypersonic-panel-flutter-experiment\/","title":{"rendered":"COMPUTATIONAL STUDY FOR THE DESIGN OF A HYPERSONIC PANEL FLUTTER EXPERIMENT"},"content":{"rendered":"\n<p><strong>Maxim Freydin, Earl H. Dowell, Gaetano M.D. Currao, Andrew J. Neely<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: N\/A<\/strong><\/p>\n\n\n\n<p><strong>Conference number: IFASD-2019-138<\/strong><\/p>\n\n\n\n<p>This work describes the use of a nonlinear computational structural model coupled with Piston Theory aerodynamics for the design of a panel \ufb02utter experiment in hypersonic \ufb02ow. The goal of the experiment is to reach \ufb02utter onset within the available \ufb02ow conditions of the hypersonic wind tunnel at the University of Southern Queensland. Several physical parameters that are present in the experimental con\ufb01guration have a strong effect on \ufb02utter onset conditions, making \ufb02utter more or less likely. The nonlinear computational structural model includes the effects of non-ideally clamped boundary stiffness, distributed static pressure differential across the panel, and a temperature differential between the panel and its support. Comparison between solutions obtained by a linear eigenvalue method and direct time-marching solution in modal coordinates show good agreement for \ufb02utter and the onset of limit cycle oscillations (LCO), as expected. Time simulations of the nonlinear model are used to predict the root-mean-square of panel\u2019s response after the onset of \ufb02utter. Given plate length and width that can \ufb01t within the wind tunnel\u2019s dimensions, the panel thickness needed to produce \ufb02utter and LCO is determined. Several thicknesses are suggested for the experiment with varying likelihood for \ufb02utter and LCO. Transient simulations show that the chosen con\ufb01gurations reach a limit cycle within the 200ms of test duration.<\/p>\n\n\n\n<p><a href=\"file:\/\/\/C:\/Users\/BWP\/Downloads\/2019_Freydin_et_al.pdf\">Read the full paper here<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Maxim Freydin, Earl H. Dowell, Gaetano M.D. Currao, Andrew J. Neely<\/b><\/p>\n<p>DOI Number: N\/A<\/p>\n<p>Conference number: IFASD-2019-138<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2433,2451],"tags":[1972,440,2725,2372,2021],"class_list":["post-19075","post","type-post","status-publish","format-standard","hentry","category-1-ifasd-2019","category-panel-flutter","tag-aeroelasticity","tag-hypersonic","tag-panel-utter","tag-piston-theory","tag-structural-dynamics","category-2433","category-2451","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/19075","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/comments?post=19075"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/19075\/revisions"}],"predecessor-version":[{"id":19077,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/19075\/revisions\/19077"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=19075"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=19075"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=19075"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}