The Experts below are selected from a list of 4206 Experts worldwide ranked by ideXlab platform

Bo-chang Shen - One of the best experts on this subject based on the ideXlab platform.

Lie Yu - One of the best experts on this subject based on the ideXlab platform.

  • The application of dimensional analysis in the design of Sliding Bearing
    2018 IEEE International Conference on Mechatronics and Automation (ICMA), 2018
    Co-Authors: Hao Li, Haipeng Geng, Sixun Tang, Lei Qi, Lie Yu
    Abstract:

    In this paper, a mathematical model for describing the stress and structural parameters of Sliding Bearing is established by dimensional analysis. First of all, a mathematical model is established, and the relevant parameters in the model are determined by orthogonal experiment. Then, the verification group is set up to verify the mathematical model. The results show that the model established by this method is accurate and reliable. The stress of Sliding Bearing is calculated using Ansys in different grid number, and the computing time is compared with the calculating time using the model mentioned above. The results show that using dimensional analysis method to build mathematical model can greatly shorten the calculating time. Therefore this method can be extended to the other Bearing parameters calculation, which will greatly improve the design efficiency of Sliding Bearing.

  • Numerical method for analysing the static characteristics of Sliding Bearing based on Ansys
    2017 IEEE International Conference on Mechatronics and Automation (ICMA), 2017
    Co-Authors: Hao Li, Haipeng Geng, Sixun Tang, Hao Lv, Lie Yu
    Abstract:

    In this paper, a new method is used to study the static characteristics of Sliding Bearings. The solving method and the process are expounded. Firstly, the validity of the new method is illustrated in mathematical form. Then the correctness of the method is verified by comparing the results with literature. With the help of Ansys, this paper put forward a new way to use the Reynolds boundary condition, which is more vivid and intuitive. The variation of static characteristics of Sliding Bearing under specific working parameters is given, which provides a reference for the design and selection of Sliding Bearing. In this paper, a new method to measure the sensitivity of the grid is proposed. The results show that the Gauss integral method can be used to obtain an accurate solution with relatively less grid. The new method can analyze the static characteristics of Sliding Bearing accurately and visibly. And compared with traditional method, use Ansys can get the value in Gauss points' position easily, which is another advantage of the new method.

  • Drop dynamics of a high-speed unbalanced rotor in active magnetic Bearing machinery
    Mechanics of Structures and Machines, 2000
    Co-Authors: Jinchen Ji, Lie Yu
    Abstract:

    The transient nonlinear dynamics of a high-speed unbalanced rigid rotor dropping onto rigid Sliding Bearing is investigated. The equations of motion are formulated and solved numerically to examine dynamics of the rotor for different regimes of the touchdown process. The contribution of parameters such as unbalance, air gap, coefficient of friction, and coefficient of restitution of drop dynamics of the rotor are examined. When the unbalance is small, the resulting motion is also small. As the level of unbalance increases, the motion of the rotor becomes larger, so there is potential for damage to the rotor and the backup Bearings. The orbits of the rotor in the backup Bearings after the rotor drops, velocities, and power loss during Sliding-whirling stages are presented for various initial conditions and system parameters. Finally, based on simulation results, some design guidelines and suggestions are given.

Sheng-bo Li - One of the best experts on this subject based on the ideXlab platform.

Hong-yuan Jiang - One of the best experts on this subject based on the ideXlab platform.

Xiaojun Zhang - One of the best experts on this subject based on the ideXlab platform.

  • Research on the Sliding Bearing pair of water hydraulic axial piston pump
    Proceedings of the Institution of Mechanical Engineers Part C: Journal of Mechanical Engineering Science, 2013
    Co-Authors: Zhenghua Zhang, Xiaojun Zhang
    Abstract:

    Sliding Bearing pair is one of the important friction pairs within water hydraulic axial piston pump, which can result in significant influences on the pump’s performance. Generally, owing to the characteristics of low viscosity and poor lubrication of water, the Sliding Bearing will operate under condition of dry or mixed lubrication, leading to a severe adhesives wear and material softening. In order to investigate the flow field of the Sliding Bearing in hydrodynamic condition, the effects of the water film pressure distribution, load carrying capacity changing with radial clearance and width–radius ratio of the Sliding Bearing pair have been simulated through MATLAB. And a suitable material combination of the Sliding Bearing pair was selected though a custom-manufactured friction and wear test rig. Based on the theoretical and experimental studies, an appropriate structure of the Sliding Bearing within water hydraulic axial piston pump was designed. The loading experiments for the developed water hydr...