{"id":36625,"date":"2019-07-18T12:58:44","date_gmt":"2019-07-18T12:58:44","guid":{"rendered":"\/forum\/forums\/topic\/cable-pretension-modeling\/"},"modified":"2019-07-18T12:58:44","modified_gmt":"2019-07-18T12:58:44","slug":"cable-pretension-modeling","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cable-pretension-modeling\/","title":{"rendered":"Cable Pretension Modeling"},"content":{"rendered":"<p>Hello everyone,<\/p>\n<p><\/p>\n<p>Actually, I study the behavior of a prestressed cable-strut structure (photo below) and I have a problem of modeling pretension in cables.&nbsp;The structure is prestressed with tension&nbsp;on cables (thin elements) and compression on struts (thick elements).&nbsp;All values of tension and compression are known, the problem is how to put them into the structure and let ANSYS know.<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/9f0b64b3-b35f-4231-a5e9-aa8e00cd455b\/00fd6e85-f689-4f35-b452-aa8e00cfdbae_image1.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>All elements are linked by spherical joints (DOF=3, free RX RY RZ). The type of elements&nbsp;are Beam188 for strut and Link180 for cable (with Keyopt(3)=1 for the cable,&nbsp;it means they&nbsp;work on &#8220;tension only&#8221;).&nbsp;I actually used &#8220;Bold Pretension&#8221; for modeling the tension of the cable but it&#8217;s not properly correct. In&nbsp;reality there are no bolt here and the cable and the strut linked by a spherial joint.<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/9f0b64b3-b35f-4231-a5e9-aa8e00cd455b\/7ee5640d-5c1a-4c07-92a9-aa8e00d5337e_image2.jpg?width=690&amp;upscale=false\" alt=\"\">&nbsp;&nbsp;<\/p>\n<p><\/p>\n<p>So the question is how can I put the pretension in the cables correctly ?&nbsp;<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>Thank you in advance.<\/p>\n<p><\/p>\n<p>&nbsp; &nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-36625","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["8797"],"_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"],"_btv_view_count":["3152"],"_bbp_subscription":["241508"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["36625"],"_bbp_forum_id":["27791"],"_bbp_engagement":["160648","166857"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["91432"],"_bbp_last_active_id":["91432"],"_bbp_last_active_time":["2019-08-06 14:14:14"]},"test":"anhnguyentuong"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/36625","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\/36625\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=36625"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}