{"id":362844,"date":"2024-04-18T05:46:34","date_gmt":"2024-04-18T05:46:34","guid":{"rendered":"\/forum\/forums\/topic\/how-to-calculate-axial-stiffness-riser\/"},"modified":"2024-04-18T05:46:34","modified_gmt":"2024-04-18T05:46:34","slug":"how-to-calculate-axial-stiffness-riser","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-calculate-axial-stiffness-riser\/","title":{"rendered":"How to calculate axial stiffness riser"},"content":{"rendered":"<p>Hi,<\/p>\n<p>The information of tension leg are diameter 1.2m, thickness 0.04m, length 70m, steel tension leg E =2.1&#215;10^11 N\/m2.<\/p>\n<p>Water depth is 80m, wave height 2m, period 6s.<\/p>\n<p>My question is :<\/p>\n<p>1) what formula to calculated axial stiffness at tether boundary condition at fixed point and tether boundary condition on structure?<\/p>\n<p>2) The value of axial stiffness key in at the two (at fixed point and on structure) are can key in same data?<\/p>\n<p>Thank.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/04\/18-04-2024-1713418678-floating structure.PNG\" alt=\"\" width=\"587\" height=\"241\"><\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/04\/18-04-2024-1713418729-riser.PNG\" alt=\"\"><\/p>\n","protected":false},"template":"","class_list":["post-362844","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi,The information of tension leg are diameter 1.2m, thickness 0.04m, length 70m, steel tension leg E =2.1x10^11 N\/m2.Water depth is 80m, wave height 2m, period 6s.My question is :1) what formula to calculated axial stiffness at tether boundary condition at fixed point and tether boundary condition on structure?2) The value of axial stiffness key in\" \/>\n\t<meta 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