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CAE Fidesys 9.0 Documentation |
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CAE Fidesys 9.0 Documentation |
The solver settings for frequency analysis are implemented from the Command Panel by selecting (Mode - Calculation Settings, Calculation Settings - Frequency Analysis, Frequency Analysis - Eigen Solver).
Fig. 1 - Command panel, solver settings for frequency analysis
In the Solution method drop-down list, select the solution method problems of eigenvalues. The following methods are available:
Krylova-Shura;
Arnoldi;
Lancosha;
Davidson;
Jacobi-Davidson.
By default, there is an automatic choice of the solution method.
Since the solution is carried out by iterations, specify their maximum number, relative and absolute accuracy (you can leave default values).
At each iteration, a system of linear algebraic equations is solved; therefore, it is necessary to choose the appropriate solver: direct or iterative (you can "entrust" the program make an automatic selection). In case of choosing an iterative solver system of linear algebraic equations additional input elements open on the Command Bar:
Fig. 2 - Command panel, iterative solver settings
By default, the method is selected automatically. In the drop-down lists Solver and Preconditioner choose the iteration method and the system of linear algebraic equation spreconditioning method, respectively. Then in the input windows of the group Parameters of the iterative solver set the required values or leave the default values.
Click Apply.
Click Start Calculation.