Acceleration of Iterative Dynamic Condensation for Eigensolutions of Structures

摘要

Condensation algorithms have been used to calculate the eigensolutions of structures. Some iterated dynamicrncondensation methods, especially iterated IRS (IIRS), have been developed to improve the efficiency of thisrnkind of method. Two acceleration techniques, Aitken’s extrapolation and shift, are presented in this paper tornmake the IIRS converges faster to the accurate results. The two strategies are applied to two numericalrnresults to illustrate the procedure and effectiveness. Some problems, such as computation cost, are discussed.