摘要：Presented calculation of the compound rod for free oscillations and test tasks of calculation of monolithic rods, which in fact began testing the above methods, which the authors considered necessary before using these methods on more complex – composite rods, the results of the applied methods are compared. The purpose of this work - the calculation of the composite rods on the dynamic effects of the method of successive approximations and finite element method, comparing the results; determining the limits of rational use of successive approximations method (SAM). The method of successive approximations (SAM) is used as a resolving method of differential equations. The application of this method to the calculation of structures has a number of advantages: the ability to consider a simplified design scheme of the beam with a distributed load (instead of a system of concentrated forces); the ability to abandon the direct simulation of the design scheme in the design and computer complex (the time of which depends on the number of connections of the composite beam); gives the result of high accuracy at low time costs.
