{"id":367357,"date":"2024-05-17T14:57:28","date_gmt":"2024-05-17T14:57:28","guid":{"rendered":"\/forum\/forums\/topic\/cyclic-loading-3\/"},"modified":"2024-05-18T13:57:18","modified_gmt":"2024-05-18T13:57:18","slug":"cyclic-loading-3","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cyclic-loading-3\/","title":{"rendered":"Why is deflection for fatigue life not at point of loading?"},"content":{"rendered":"

I am analyzing an RCC beam for fatigue analysis, and I applied a cyclic load of 100kN on two points. These are the steps I followed. Is my result correct?<\/span><\/p>\n

1. I applied a load of 100kN on two points and solved it for total deformation, and noted the maximum deflection obtained.<\/span><\/p>\n

2. With this value I created a table of time and displacement. The time or steps given was 100 sec and displacement was 2.8842 mm. <\/span><\/p>\n

At t=0 seconds, the displacement is 00 mm.<\/span><\/p>\n

At t=1 second, the displacement is 1.4421 mm.<\/span><\/p>\n

At t=2 seconds, the displacement reaches its peak at 2.8842 mm.<\/span><\/p>\n

At t=3 seconds, the displacement returns to 1.44211 mm.<\/span><\/p>\n

At t=4 seconds, the displacement returns to 0 mm.<\/span><\/p>\n

At t=5 seconds, the displacement goes to −1.4421 mm.<\/span><\/p>\n

At t=6 seconds, the displacement reaches its negative peak at −2.8842 mm.<\/span><\/p>\n

At t=7 seconds, the displacement returns to −1.4421 mm.<\/span><\/p>\n

At t=8 seconds, the displacement returns to 0 mm.<\/span><\/p>\n

This cycle repeats consistently without any abrupt jumps, ensuring a smooth sinusoidal variation over the entire time period. The point where I applied load is,<\/span><\/p>\n

\"\"<\/a><\/p>\n

But the plot I got for cyclic loading is,<\/span><\/p>\n

\"\"<\/a><\/span><\/p>\n","protected":false},"template":"","class_list":["post-367357","topic","type-topic","status-closed","hentry","topic-tag-fatigue-analysis","topic-tag-fatigue-life"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["348672","240"],"_bbp_author_ip":["23.32.16.81"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["165"],"_bbp_topic_status":["unanswered"],"_edit_lock":["1716040650:310204"],"_bbp_topic_id":["367357"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","348672"],"_bbp_voice_count":["2"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["367496"],"_bbp_last_active_id":["367496"],"_bbp_last_active_time":["2024-05-20 04:49:54"]},"test":"opalsnehagmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/367357","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":2,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/367357\/revisions"}],"predecessor-version":[{"id":367439,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/367357\/revisions\/367439"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=367357"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}