<h2>AAS 95-374</h2><h2>Power Flow Finite Element Analysis of Flexible Space Structures</h2><h4>M. Smith and M. W. Chernuka, Martec Limited, Nova Scotia, Canada</h4><h2> Abstract </h2>The very low natural frequencies and high modal densities of proposed large flexible space structures (LFSS) have stretched modal-based dynamic analysis and control methods to the limit.  In this study, power flow finite element analysis (PFFEA), a predictive method in structural acoustics, is introduced as an alternative to the traditional FEA approach to LFSS.  PFFEA and FEA methods are compared by investigating the response of a repetitive lattice truss structure to torsional disturbances.  It is shown that passive damping treatments may be readily included in PFEE models.<br><br>