{"id":49080,"date":"2020-10-17T17:08:14","date_gmt":"2020-10-17T17:08:14","guid":{"rendered":"\/forum\/forums\/topic\/random-vibration-fatigue-steinberg-3-bands-method\/"},"modified":"2020-10-17T17:08:14","modified_gmt":"2020-10-17T17:08:14","slug":"random-vibration-fatigue-steinberg-3-bands-method","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/random-vibration-fatigue-steinberg-3-bands-method\/","title":{"rendered":"Random vibration fatigue &#8211; Steinberg 3 bands method"},"content":{"rendered":"<p>Hi guys!nI&#8217;m doing a random vibration analysis and using Steinberg 3 bands method to evaluate fatigue life of structures. Steinberg method uses 1-sigma, 2-sigma, 3-sigma von Mises stresses and S-N curve to find fatigue life of structures. But in my case, only 1-sigma, 2-sigma stresses are located in high cycle zone of S-N curve. 3-sigma stress is very high and exceeds ultimate strength of material. Could any one tell me how to work around in this case? Thanks!n<\/p>\n","protected":false},"template":"","class_list":["post-49080","topic","type-topic","status-closed","hentry","topic-tag-fatigue"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["21309"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":["q\u00176<"],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0"],"_btv_view_count":["2050"],"_bbp_subscription":["243612"],"_bbpmt_movedon":["2022-08-26 08:40:09"],"_bbpmt_movedfrom":["27820"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["49080"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","262268"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["130188"],"_bbp_last_active_id":["130188"],"_bbp_last_active_time":["2020-10-17 21:18:56"]},"test":"user-deleted"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/49080","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\/49080\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=49080"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}