Abstract
This paper, respectively, considers the nonlinear contact and Coulomb friction between rollers and rails, the characteristics of a hydraulic cylinder, and the contact characteristics between sleepers and ballast. The models of hydraulic cylinders are employed to realize the characteristics of hydraulic circuits and clamping forces. And the effects of the Coulomb friction between the track roller and the rail are simulated by calling the Boolean operation in the bond graph simulation software 20-sim. Based on the above analyses, this paper explores deeply which effect the pressures in the hydraulic cylinders and the hydraulic resistances of the flow passes at the inlets and outlets of the hydraulic cylinders will have on roller–rail contacts and working effects. As a result, the increase in pressure of the hydraulic cylinder will stabilize the roller–rail contact and improve the energy transmission efficiency. The increase in the hydraulic resistance value can enhance the working effect to some extent. With regard to the friction, there are four forms of frictional contact between the roller and the rail.
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This study was financially supported by the projects of National Natural Science Foundation of China (51765023).
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Li, J., Wang, L. & Yan, B. Modeling and dynamic analysis of the dynamic stabilization unit based on bond graph. Arch Appl Mech 91, 2681–2695 (2021). https://doi.org/10.1007/s00419-021-01914-4
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DOI: https://doi.org/10.1007/s00419-021-01914-4