{"id":42263,"date":"2020-03-30T22:54:39","date_gmt":"2020-03-30T22:54:39","guid":{"rendered":"\/forum\/forums\/topic\/base-excitation-ansys-workbench\/"},"modified":"2023-09-22T14:17:30","modified_gmt":"2023-09-22T14:17:30","slug":"base-excitation-ansys-workbench","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/base-excitation-ansys-workbench\/","title":{"rendered":"Base excitation ANSYS workbench"},"content":{"rendered":"<p>I would like to apply sunusoidal 1g, 30 Hz acceleration and sinusoidal 1g, 100 Hz acceleration along the horizontal direction at the base of the object. How should I do it? Do I need to use harmonic analysis after modal extraction or using the transient analysis (only) is fine?<\/p>\n<p><\/p>\n<p>&nbsp;For 1g 30 Hz acceleration, I can use acceleration function= 9.8*sin(2*pi*30*time)&nbsp; or displacement function 9.8*sin(2*pi*30*time\/((2*pi*30).^2).&nbsp;<\/p>\n<p><\/p>\n<p>Shouldn&#8217;t it provide the same result?<\/p>\n","protected":false},"template":"","class_list":["post-42263","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["14443"],"_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"],"_btv_view_count":["6163"],"_bbp_status":["publish"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["42263"],"_bbp_forum_id":["27791"],"_bbp_engagement":["22","240","156577","187215"],"_bbp_voice_count":["4"],"_bbp_reply_count":["21"],"_bbp_last_reply_id":["146017"],"_bbp_last_active_id":["146017"],"_bbp_last_active_time":["2021-03-11 20:35:22"]},"test":"masud407"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/42263","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\/42263\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=42263"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}