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ST71.10.20.9 Spectral Response Analysis
Spectral response analysis is typically used for calculating the linear elastic response of a structure subjected to random dynamic loading. In Strand7, random dynamic loading can be expressed in terms of either response spectrum or power spectral density (PSD) curves. Furthermore, the applied excitation can be either a base excitation (displacement, velocity or acceleration) or a dynamic load.
Suppose that an oscillator with a single degree of freedom (SDOF) is excited by an external action...

