Application of Dynamic Elements and Continuum Methods to Large Space Structures, Volume 2

摘要

Methods for the analysis of complex and large structures are reviewed. Dynamic synthesis and reduction methods taking the symmetry of the structure into account are considered. Improvements of the accuracy of dynamic elements (bar, continuum, beam) by a better discretization of the mass matrix are identified. The two identified approaches (Stavrinidis and Second Order) can reduce the error in frequency, stresses, etc., in typical cases by a factor of more than 2. It is recommended to further explore these improvements since significant accuracy can be achieved with no extra computational effort.