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ST7-R3.70.60.14 Spectral Response Quantities Summation
The Spectral Response Solver calculates the response for each included mode from a natural frequency analysis. Modal responses are summed using the SRSS and CQC methods to produce an envelope of responses for each result quantity. This Webnote explains how these envelopes are produced, not only for component quantities (e.g., reaction in a global direction), but also for combined quantities (e.g., reaction in a UCS direction).
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