Direct-solution steady-state dynamic analysis

A direct-solution steady-state dynamic analysis:

  • is used to calculate the steady-state dynamic linearized response of a system to harmonic excitation;

  • is a linear perturbation procedure;

  • calculates the response directly in terms of the physical degrees of freedom of the model;

  • is an alternative to mode-based steady-state dynamic analysis, in which the response of the system is calculated on the basis of the eigenmodes;

  • is more expensive computationally than mode-based or subspace-based steady-state dynamics;

  • is more accurate than mode-based or subspace-based steady-state dynamics, in particular if significant frequency-dependent material damping or viscoelastic material behavior is present in the structure; and

  • is able to bias the excitation frequencies toward the approximate values that generate a response peak.

The following topics are discussed:

Related Topics
About dynamic analysis procedures
Mode-based steady-state dynamic analysis
Subspace-based steady-state dynamic analysis
Defining an analysis
General and perturbation procedures
In Other Guides
*STEADY STATE DYNAMICS
Configuring a direct-solution steady-state dynamic procedure
Creating and modifying prescribed conditions

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