Abstract
In this report, the validities of nonlinear vibration analysis by the Galerkin's method using linear natural modes and the Incremental Transfer Stiffness Coefficient Method, which is presented by authors, are checked quantitatively from view points of computational accuracy and computation speed. Generally, a vibration behavior of a large-scale system is estimated from analysis result of a reduction model obtained by applying the Galerkin's method using linear natural modes to a large-scale system. By this sort of method, in order to execute accurate analysis, computation time tends to increase explosively. In this report, supremacies of both methods are clarified at various computation conditions.
