Appendix IV

Multiple Force Analysis

If m harmonic forces are introduced, denoted as image, image, …, image, sharing the same excitation frequency ω and applied to nodes k1, k2, …, km respectively, equation (3.2) becomes

image (AIV.1)

Applying the same simplification theory as was used in Section 3.1 yields (AIV.2), which is similar to equation (3.13):


Again, the ...

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