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Solver Settings dialog box

Internal Eigenvalue Solution
Eigenvalue Upper Bound Multiplier Specifies the eigenvalue upper bound for computing current mode shapes and frequencies. The eigenvalue upper bound is the ratio of the frequency of the highest mode you want to optimize and the frequency of the initial highest mode.
Remove Modes Below (Hz) Specifies an upper limit for rigid body modes. These modes are treated differently depending on the model reduction.For the modal model reduction, this option sets frequencies that are below the specified value to zero to identify them as rigid body modes. As a result, these modes are less likely to be paired internally with a target during solution process.For the physical model reduction, this option does not compute modes below the specified value to remove them from the solution.
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Solver Settings dialog box, Simcenter 3D 2021.1 Series

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Source: https://docs.sw.siemens.com/en-US/doc/289054037/PL20200601120302950.advanced/id1001341 · retrieved 2026-07-17