{"id":158870,"date":"2021-05-26T13:10:32","date_gmt":"2021-05-26T13:10:32","guid":{"rendered":"\/forum\/forums\/topic\/how-can-i-apply-20-khz-ultrasonic-vibration-in-my-system\/"},"modified":"2021-05-28T06:01:01","modified_gmt":"2021-05-28T06:01:01","slug":"how-can-i-apply-20-khz-ultrasonic-vibration-in-my-system","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-can-i-apply-20-khz-ultrasonic-vibration-in-my-system\/","title":{"rendered":"How can I apply 20 kHz ultrasonic vibration in my system?"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hello, I work on my master thesis and am a novice in CAD and FEM. I try to simulate ultrasonic metal welding process but currently stuck with boundary conditions. <\/p>\n<p>The main problem at the moment is that I cannot apply the vibration motion to my system.<\/p>\n<p>In ultrasonic welding an upper metal sheet slides along the x-axis on top of another one with a frequency of 20 kHz.<\/p>\n<p><\/p>\n<\/p>\n<p>In some paper I found a formula: Ux = Xsinwt,<\/p>\n<p>where X is the amplitude of vibration (27.5 micrometers). E.g., upper sheet first goes to the left direction, then returns to the initial position, then goes to the right direction and so on.<\/p>\n<p>w = 2&pi;f , f is 20 kHz.<\/p>\n<p><\/p>\n<\/p>\n<p>Welding time in the real process is about 1-2 s, but for saving computational time it could be 0,1 s in Ansys for the beginning. <\/p>\n<p>So I need to apply this equation in Ansys as a displacement. Perhaps it usually applies with APDL but do not understand how.<\/p>\n","protected":false},"template":"","class_list":["post-158870","topic","type-topic","status-closed","hentry","topic-tag-frequency","topic-tag-static-structural","topic-tag-ultrasonic-sound-waves-1","topic-tag-utrasonic-vibrations-1","topic-tag-welding"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":[""],"_bbp_old_reply_author_name_id":["Anonymous"],"_bbp_old_is_reply_anonymous_id":["false"],"_btv_view_count":["767"],"_bbp_likes_count":["0"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["158870"],"_bbp_forum_id":["27791"],"_bbp_engagement":["185297","197210"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["179931"],"_bbp_last_active_id":["179931"],"_bbp_last_active_time":["2021-05-28 06:01:01"]},"test":"temir075644gmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/158870","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\/158870\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=158870"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}