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Error msg file post buckle analysis

Error msg file post buckle analysis

Error msg file post buckle analysis

(OP)
Dear All,

I used buckle analysis to find the failure modes of a portal frame and then used the imperfection function to find the post buckle mechanism.

However I'm am getting the following error message in the msg file

***NOTE: THE SOLUTION APPEARS TO BE DIVERGING. CONVERGENCE IS JUDGED UNLIKELY.
 
***ERROR: TOO MANY ATTEMPTS MADE FOR THIS INCREMENT

I've tried changing the minimum and maximum increments but it doesn't seem to work.

At present i have set the follow

 AUTOMATIC TIME CONTROL WITH -
          A SUGGESTED INITIAL TIME INCREMENT OF                2.000E-02
          AND A TOTAL TIME PERIOD OF                            1.00    
          THE MINIMUM TIME INCREMENT ALLOWED IS                1.000E-10
          THE MAXIMUM TIME INCREMENT ALLOWED IS                 2.00    


Any help would be much appreciated as my dissertation hand in is rapidly approaching.

Cheers Brian

 

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