VIBRATING MATHEMATICAL MODEL OF SHIP PIPELINES
The ship pipe lines are influenced with a complex of static and dynamic loads: oscillation movements of hull elements, units, power-plants, and also a pulsating internal flow, mechanical and hydraulic shock. In this connection, operation of pipelines of ship systems is distinguished with a high level of vibrating tension. Today designing of pipelines is carried out on the basis of designed static models. Therefore, it is important to construct the designed dynamic models that adequately display real vibration tension and vibration strength of a structure. In the article the classification of pipelines on support devices that allows to define the approach to a problem of dynamics of the pipelines interacting with the pulsing stream is shown. For construction of mathematical model of vibration of the pipeline the method of finite elements is used. As a result the resolving system in the form of the ordinary differential equations with floating factors of the rigidity, describing the forced parametric vibrations the previously strained dynamic system concerning a nonperturbed state is gained.