Stiffness identification of hydraulic hoses

In this paper was presented how to determine the stiffness of flexible hydraulic hoses. The stiffness of the hoses was determined based on a research changes of the pressure of oil in the hydraulic hoses. There was presented the measuring station used for this, and described the method to realization of this research. In the research the hydraulic hoses worked in the system with the hydraulic actuator. The obtained results of measurements of the pressure changes relate to the actuator and the hydraulic hoses together. The research was made for the hydraulic hoses of the inter diameter 5 and 6 mm. The length of the hoses was 1, 3 and 6 m. Moreover, the investigated hydraulic hoses were different material which it was made and the number and type of the reinforcement. (C) 2016 K. Cieslik, M. J. Lopatka, T. Muszynski. Peer- review under responsibility of the Kaunas University of Technology, Panevezys Faculty of Technologies and Business