Weryfikacja metody aproksymacji połączonych (CA) w zagadnieniu własnym prostego trójwymiarowego modelu konstrukcji

Abstract

In the paper combined approximations (CA) hybrid method is proposed as an effective reanalysis approach for computation of natural frequencies of the modified simple threedimensional structure. CA procedure is applied in the case of increasing number of degrees of freedom (DOF) in the model after modification. It is proved that the CA method gives a significant reduction of the computational effort (the reduction of the computational cost) by decreasing the number of necessary numerical operations for evaluation of natural vibration frequencies of the modified structure with no greater decrease of the computation accuracy.