{"id":41198,"date":"2020-02-24T10:46:50","date_gmt":"2020-02-24T10:46:50","guid":{"rendered":"\/forum\/forums\/topic\/error-solver-pivot-warnings-or-errors-have-been-encountered-during-the-solution\/"},"modified":"2020-02-24T10:46:50","modified_gmt":"2020-02-24T10:46:50","slug":"error-solver-pivot-warnings-or-errors-have-been-encountered-during-the-solution","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/error-solver-pivot-warnings-or-errors-have-been-encountered-during-the-solution\/","title":{"rendered":"Error: Solver pivot warnings or errors have been encountered during the solution"},"content":{"rendered":"<p>Using ANSYS 2019 R3, I intend to carry out four-point bending test on a RC beam. Here are the problems I encountered in the attempt to modelling and I need help with these:<br \/>1. Solver pivot warnings\/ errors have been encountered during the solution.&nbsp;<span style=\"font-family: 'Open Sans', Arial, Helvetica, sans-serif; font-size: 15px;\">This is usually a result of an ill conditioned matrix possibly due to unreasonable material properties, an under constrained model, or contact related issues.&nbsp; Check results carefully&#8230;<\/span><\/p>\n<p><\/p>\n<p>2.<span style=\"font-family: 'Open Sans', Arial, Helvetica, sans-serif; font-size: 15px;\">A solver pivot warning or error has been detected in the UY degree of freedom of node&nbsp;434 located in&nbsp;Line Body. This is usually a result of an ill conditioned matrix possibly due to unreasonable material properties, an under constrained model, or contact related issues.&nbsp; Check results carefully&#8230;<\/span><\/p>\n<p><\/p>\n<p>&nbsp;Conditions of the RC beam:<\/p>\n<p><\/p>\n<p>1. Beam is modelled in half, symmetry is applied to the surface normal to x-axis.&nbsp;<\/p>\n<p><\/p>\n<p>2. Mesh method: patch conforming method for concrete bodies, body sizing= 30mm for steel and stirrrups<\/p>\n<p><\/p>\n<p>3. Engineering properties of concrete, steel bars and stirrups are set in Engineering material (no commands added).<\/p>\n<p><\/p>\n<p>4. Displacement applied at only one side of the beam (since symmetry is applied), with x= free, y &amp; z= constant to emulate simply support.<\/p>\n<p><\/p>\n<p>I couldn&#8217;t upload the Workbench file, it says &#8220;file extension not allowed&#8221;. But I attached a text file with solver output in it.<\/p>\n","protected":false},"template":"","class_list":["post-41198","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=\"Using ANSYS 2019 R3, I intend to carry out four-point bending test on a RC beam. Here are the problems I encountered in the attempt to modelling and I need help with these:1. 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