Leung, Andrew Yee TakAndrew Yee TakLeungFergusson, N. J.2022-05-202022-05-201995https://repository.sfu.edu.hk/handle/sfu/3214The computation of the total and tangential stiffness matrices associated with the harmonic balance method for non-linear ordinary differential equations requires some complicated calculations involving double sums. Some matrix results are presented here that ease the associated book-keeping and allow the matrices to be programmed easily.enjournal article10.1006/jsvi.1995.0216