Parameter optimization of clamping cylinder for dynamic stabilization unit based on bond graph

LI Jia-qi1, WANG Li-hua1, YAN Bo2
(1.Faculty of Mechanical Engineering, Kunming University of Science and Technology, Kunming 650500, China;
2.Faculty of Art And Communication，Kunming University of Science and Technology, Kunming 650500, China)

Abstract: Aiming at issues of the working pressure of hydraulic cylinder and the coefficients at inlet and outlet of clamping hydraulic cylinder effect the working results，the roller rail characteristics and contact characteristics of the rail were studied. A dynamic stabilization unit bond graph model based on the bond graph theory, Hertz nonlinear contact theory and Euler beam theory, which includes a hydraulic and a mechanical system, was proposed. The lateral accelerations of the dynamic stabilization unit and sleeper were compared with the experimental results to verify the accuracy of the model. The impacts of the working pressure and hydraulic resistance parameters of the hydraulic cylinder on working results were summarized. The results indicate that increasing the working pressure of the hydraulic cylinder can stabilize the roller rail relationship and surge the energy transfer efficiency of the rollers and rails. The hydraulic resistance coefficients of the hydraulic cylinder inlet and outlet are also positively related to the working effect.

Key words: dynamic stabilization unit; bond graph theory; hydraulic cylinder; roller rail contact; gap drive