Learning Forum

[ryan12]

When I try to solve the solution in Ansys in showed there are error :

1)An internal solution magnitude limit was exceeded. Please check your Environment for inappropriate load values or insufficient supports.  Please see the Troubleshooting section of the Help System for more information. (error)

2)An internal solution magnitude limit was exceeded. (Node Number 19, Body Beam (100), DOF UY) Please check your Environment for inappropriate load values or insufficient supports.  You may select the offending object and/or geometry via RMB on this warning in the Messages window.  Please see the Troubleshooting section of the Help System for more information. (error)

3) (Warning): Solver pivot warnings or errors have been encountered during the solution.  This is usually a result of an ill conditioned matrix possibly due to unreasonable material properties, an under constrained model, or contact related issues.  Check results carefully.

can any one help me with this ? 

 

 

[peteroznewman]

A Google Search of "internal solution magnitude limit was exceeded" in this site returns 144 results. Please read at least half of them and try a few different ways to resolve the issue. Then come back with a specific question if you were not able to get a solution.

[dropweight]

peter,

Can you help me with my question concerning best approach or a spreadsheet tool (maybe) for computing plastic strain energy (dissipated internal energy converted to heat if coupled simualtion) on a "part"  in ls-dyna (probably similar to ansys)

 

Thanks

DropWeight

[ryan12]

Hi peter, I tried to solve the ' internal solution magnitude limit was exceeded' error, and now it come up with a new error : 

An unknown error occurred during solution.  Check the Solver Output on the Solution Information object for possible causes.

I tried to click in to the solution infrommation and see what;s the error however and  I couldn't see any problem with it. 

 

ryan 

 

[peteroznewman]

Hi Ryan,

In Workbench, drag and drop a Modal analysis onto the Model cell of your Static Structural analysis. Open the Model cell of Static Structural. Now drag the Fixed Support in your Static Structural branch of the outline and drop it on the Modal branch.  Solve the Modal branch. Look at the deformed shapes of the Modal solution. That will give you a clue as to what is unconnected in your model.

[ryan12]

hi peter, 

 

thank you for replying my question, I have tried run a model analysis, the frequency showed zero however it show something like this: 

 

[peteroznewman]

The red part is not connected.  How is that red part supposed to be connected to the rest of the structure?  Is is supposed to be fixed to ground directly?

[ryan12]

hi peter, I still don't get the point yet so this is a static structure and the red part supposed to be the beam connect each other . I dawn the structure in half then mirror the other half so is that because of the mirror so it didn't connect each other ? . this is my geometry it may help you to understand more cleanly. 

 

[ryan12]

Hi peter, 

 

sorry for asking many question, now I am also facing an error which is : There are 1 small equation solver pivot terms (e.g., at the UZ degree  
 of freedom of node 2093).  Please check for an insufficiently          
 constrained model.

I tired to put simple support at each Corner but then error comes up as above. i also tired to use fixed support and placing a displacement at a corner and it didn't work as well. is about the degree of freedom. with Uz. thank you !

ryan