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Abaqus left eigenvalue and eigenvector
Tue, 2019-09-03 06:50 - Gil Ho Yoon
Dear all,
I am working on the subject of the instability problem using Abaqus.
One of the representative examples may be the squeal noise.
In the Abaqus simulation, we have the difficulty in obtaining the left eigenvectors.
It seems that the following comments do not work properly to obtain the left eigenvectors.
Does anyone know how to obtain the left eigenvectors in SIM?
********************************************
*STEP
Complex eigenvalue extraction
*COMPLEXFREQUENCY
55,
*print, solve=yes
*END STEP
*STEP
Complex eigenvalue extraction
*COMPLEXFREQUENCY,LEFT EIGENVECTORS
55,
*print, solve=yes
*END STEP
************************************
It turns out that eigenvectors obtained by the squeal noise are same as those of the righeigenvectors.
| Attachment | Size |
|---|---|
 Change inp_.txt to inp | 2.56 MB |
| Change inp_.txt to inp | 2.37 MB |
| This is the file modified from the example of abaqus. | 2.74 KB |
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Frank