The design of hydraulic transmission systems for control and actuation requires accurate knowledge of their dynamic response: some standard techniques are known to obtain a consistent dynamic model of a fluid line, including the contribution of inertia, compressibility and friction. In this paper an efficient procedure is developed for simulating the dynamic response of a fluid line in both the frequency and time domains, focusing the attention on the modal analysis of a discretized model, in view of coupling with mechanical systems. A bi–dimensional approach is adopted, and the laminar flow frequency-dependent friction is modelled using non-integer order differential laws, which may improve the accuracy of the simulated responses in comparison with more traditional Newtonian models.
Dynamical analysis of fluid lines coupled to mechanical systems taking into account fluid frequency-dependent damping and non-conventional constitutive models: part 1 – modelling fluid lines / Catania, Giuseppe; Sorrentino, Silvio. - In: MECHANICAL SYSTEMS AND SIGNAL PROCESSING. - ISSN 0888-3270. - STAMPA. - 50-51:(2015), pp. 260-280. [10.1016/j.ymssp.2014.05.024]
Dynamical analysis of fluid lines coupled to mechanical systems taking into account fluid frequency-dependent damping and non-conventional constitutive models: part 1 – modelling fluid lines
Sorrentino, Silvio
2015
Abstract
The design of hydraulic transmission systems for control and actuation requires accurate knowledge of their dynamic response: some standard techniques are known to obtain a consistent dynamic model of a fluid line, including the contribution of inertia, compressibility and friction. In this paper an efficient procedure is developed for simulating the dynamic response of a fluid line in both the frequency and time domains, focusing the attention on the modal analysis of a discretized model, in view of coupling with mechanical systems. A bi–dimensional approach is adopted, and the laminar flow frequency-dependent friction is modelled using non-integer order differential laws, which may improve the accuracy of the simulated responses in comparison with more traditional Newtonian models.File | Dimensione | Formato | |
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