Hello everyone,
I am doing a strain-controlled low cycle fatigue simulation on Abaqus, where displacement is applied as the load with triangular waveform amplitude, and in return, the strain should be controlled throughout the simulation.
But after some time, there is excessive deformation, and the strain is out of control. The message file contains the following warnings:
***WARNING: THE SYSTEM MATRIX HAS 3 NEGATIVE EIGENVALUES.
ASYNCHRONOUS OUTPUT DATABASE FRAME FLUSH STARTED
Can anyone help me out with this issue?
- Rajat asked 1 year ago
- last edited 1 year ago
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Greetings,
Your model needs to be checked. Please visit the consultancy and send your model to our experts to help you out.
Best regards.
- Training Expert answered 1 year ago
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