{"id":28349,"date":"2017-11-08T08:36:43","date_gmt":"2017-11-08T08:36:43","guid":{"rendered":"\/forum\/forums\/topic\/shell-element-with-orthotropic-materials-gives-very-different-results-from-experimental-data\/"},"modified":"2017-11-08T08:36:43","modified_gmt":"2017-11-08T08:36:43","slug":"shell-element-with-orthotropic-materials-gives-very-different-results-from-experimental-data","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/shell-element-with-orthotropic-materials-gives-very-different-results-from-experimental-data\/","title":{"rendered":"shell element with orthotropic materials gives very different results from experimental data"},"content":{"rendered":"<p>I am trying&nbsp;to analyze vibration characteristics of musical instruments which have a very thin wood plate.&nbsp; I can get similar results with using solid element but generally, researchers who work on musical instruments are using shell element and they say that you can get a reliable result with&nbsp;this method because a thickness of the plate is very small (2-3 mm) than its dimensions (360-460 mm). now, I am carrying out an experiment by using&nbsp;two rectangular plates (493x182x3 mm) on Ansys&nbsp;mechanical. First one is the only surface mashed with shell element (thickness is 3 mm), the second one is solid have same dimensions. As you can see attached images, if I choose structural steel for material, vibrations of two plates are similar. But I choose an orthotropic&nbsp;material such as wood, results&nbsp;do not match. additionally, results obtained from the solid element is closer to experimental data.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/44c683e3-4dd7-4998-97ba-a825007a4523\/2f688c4c-aaa2-473e-b124-a826007515d7_foruma-i?lenmi?.jpg?width=690&amp;upscale=false\" alt=\"\">&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-28349","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["515"],"_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":["0","0","0","0","0"],"_btv_view_count":["3935"],"_bbp_subscription":["235454"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["28349"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","155007"],"_bbp_voice_count":["2"],"_bbp_reply_count":["15"],"_bbp_last_reply_id":["55568"],"_bbp_last_active_id":["55568"],"_bbp_last_active_time":["2017-11-15 12:28:52"]},"test":"emirdegirmenli"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/28349","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\/28349\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=28349"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}