This article does not contain all possible messages. It contains messages that can occur more or less frequently when using AxisVM.
Categories #
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Question from AxisVM to the user if the selected function (e.g. “Delete”) should be carried out or about how to proceed |
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Information for the user |
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Critical note. Important information, violation of code provisions, untrustworthy results |
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Error. The selected function or calculation cannot be performed |
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Save. Dialogs to save models and results. |
AxisVM MESSAGES #
LINEAR STATIC ANALYIS - At the beginning of the calculation #
Cause
The analysis was started for a model without supports
Procedure
- “Yes” starts the analysis (note the model stability)
- “No” cancels the analysis
Cause
In one or more loadcases, distributed loads with overlapping loads areas are defined
Procedure
- “Yes” cancels the analysis and lists the affected loadcases and loads
- “No” continues the analysis, overlapping loads are taken into account as they are defined
Cause
A planar system is analysed
Procedure
- “Yes” disregards all effects out the specified plane
- “No” perform a spatial analysis
- “Save model with this setting” avoids this message in future analysis
Cause
The nodal degrees of freedom have been changed manually or a model with saved nodal degrees of freedom has been modified. The settings do not correspond to the usual principles.
Procedure
- Define all nodal DOF as “free” and restart the analysis
- Automatic setting of the nodal DOF at calculation start (if required)
Cause
Edge hinges have been defined on free edges of domains
Procedure
- “Yes“ deletes the redundant hinges and starts the analysis
- “No” cancels the analysis and selects the incorrect hinges
Cause
The model contains lines with the same number of connected hinges and domains
Procedure
- “Yes” deletes the extra hinges and starts the analysis
- “No” cancels the analysis and selects the incorrect hinges
Cause
The analysis was started for a model without loads. Analysis is not possible
Procedure
- Define loads
- Restart calculation
Cause
Static analysis is started for a model with seismic loads without results from a vibration analysis
Procedure
- Run vibration analysis and restart static analysis
Cause
The analysis was started, even though the results were valid. No changes were done in the model, which require a new analysis.
Procedure
- “Yes” performs a new analysis
- “No” cancels the operation
- “Save as” saves the model in a new file and runs the analysis
LINEAR STATIC ANALYSIS - After the calculation #
Cause
Listed nodes have no stiffness in the direction indicated (nodes can move and/or rotate without resistance)
Procedure
- Check model
Cause
- The model is unstable
- Very large absolute coordinates are used
Procedure
- Check model (releases, supports)
- Connected troubleshooting guide: https://axisvm.eu/docs/the-model-contains-singularities-unstable-mode/
Cause
The sum of defined loads is not equal to the sum of support reactions
Procedure
- Control the nodal DOF (all degrees of freedom as “free”)
- Check model
Cause
The available space on the hard-drive is not sufficient to write the result file
Procedure
- Free space on the hard disk
- Simplify model (e.g. larger mesh size)
- Save model on a local drive (instead of a network drive)
Cause
The result file (*.axe) cannot be saved because it already exists and is set as read-only
Procedure
- Change attributes of the result file (write protection)
- Delete result file
NON-LINEAR STATIC ANALYIS #
Cause
- A linear static analysis was started in a model with non-linear element properties.
Procedure
- “Yes” continues the analysis and ignores the non-linear properties
- “No” cancels the analysis
Cause
Large difference of a beam deformation between two increments. The analysis is interrupted, since the results are not reliable.
Procedure
- Increase number of increments (analysis parameters)
- Check model
Cause
Large difference in the deformation of a node between two increments. The calculation is stopped, since the results would not be reliable.
Procedure
- Increase number of increments (analysis parameters)
- Check model
Cause
After reaching the maximum number of iterations (analysis parameters) no convergence was reached
- The analysis converges too slowly
- The analysis does not converge
Procedure
- Check the connected knowledge base article: https://axisvm.eu/docs/no-convergence-after-nonlinear-analysis/
- Check model (stability under non-linear conditions)
- Increase the maximum number of iterations (analysis parameters)
- Increase number of increments (analysis parameters)
VIBRATION #
Cause
- The calculation method used, causes greater mathematical errors in the last few modes.
Procedure
- Decrease number of modes calculated (analysis parameters)
- Increase number of masses (e.g. generate line mesh, refine mesh size)
Cause
The model is unstable. The vibration analysis doesn’t return clear results
Procedure
- Check model
Cause
The model does not have as many vibration modes as set for calculation
Procedure
- Decrease number of modes calculated (analysis parameters)
- Increase number of masses (e.g. generate line mesh, refine mesh size)
Cause
The vibration analysis does not produce any results
Procedure
- Increase “maximum iterations” (analysis parameters)
BUCKLING #
Cause
The model does not have as many buckling shapes as set for calculation
Procedure
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- Decrease the number of buckling shapes calculated (analysis parameters)
