Modal response calculation for frequency analysis

For frequency response analysis, the modal displacements, velocities, and accelerations:

are calculated by

where

	= i-th mode
	= i-th modal force
	= loading frequency
	= i-th modal mass
	= i-th modal damping
	= i-th modal stiffness

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PSD-Time conversion functions

Fast Fourier Transformation (FFT)

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Modal reduction

Mode acceleration method

Mode displacement method

Modal response calculation for transient analysis

Random vibration

Response spectrum analysis

Modal damping

Physical damping

Shell stress resultants

Theory of Fast RMS modal response computing

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Modal response calculation for frequency analysis, Simcenter 3D 2021.1 Series

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