{"id":357889,"date":"2024-03-19T13:17:18","date_gmt":"2024-03-19T13:17:18","guid":{"rendered":"\/forum\/?post_type=topic&#038;p=357889"},"modified":"2024-03-20T16:15:20","modified_gmt":"2024-03-20T16:15:20","slug":"transient-analysis-of-a-simply-supported-beam-with-prestress","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/transient-analysis-of-a-simply-supported-beam-with-prestress\/","title":{"rendered":"Transient analysis of a simply-supported beam with prestress"},"content":{"rendered":"<p>Hi everyone!I&#8217;m doing a transient analysis of a simply-supported beam bridge with prestress,but I&#8217;m running into some problems.I don&#8217;t know why the displacement results I got are completely wrong.Moreover,when i increase the time step(0.2s&#8212;&gt;1s),the computation does not converge.This is my code.Finally,why the L2 loss of F is so big?Maybe someone can show me where I&#8217;m going wrong? Thanks a million!<\/p>\n<p><a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/19-03-2024-1710853811-1.png\"><img decoding=\"async\" style=\"display: block;margin-left: auto;margin-right: auto\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/19-03-2024-1710853811-1.png\" alt=\"\"><\/a><\/p>\n<p><a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/19-03-2024-1710853834-2.png\"><img decoding=\"async\" style=\"display: block;margin-left: auto;margin-right: auto\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/19-03-2024-1710853834-2.png\" alt=\"\"><\/a><\/p>\n<p><a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/19-03-2024-1710853855-3.png\"><img decoding=\"async\" style=\"display: block;margin-left: auto;margin-right: auto\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/19-03-2024-1710853855-3.png\" alt=\"\"><\/a><a 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with prestress,but I'm running into some problems.I don't know why the displacement results I got are completely wrong.Moreover,when i increase the time step(0.2s---&gt;1s),the computation does not converge.This is my code.Finally,why the L2 loss of F is so big?Maybe someone can show me where 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