The lubrication performance of journal bearings with different sorts of uniformly distributed micro-spherical textures are studied in this paper. Geometries and dynamic models of journal bearings with pure concave/convex textures are developed. The validity of the proposed models is verified against the oil film pressure distribution from the literature. The effects of geometry parameters (the ...

Li Zhang 1,*, Wu Zhang 2, Juhua Zhang 3 and Guangqiang Li 3 1 School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China 2 School of Materials Science and Engineering, Shenyang Ligong University, Shenyang 110168, China; [email protected] 3 The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China; zhangj...

According to the design requirements of load equalization and vibration reduction for stern bearing, a water-lubricated bearing with self-adaptation capacity is proposed. The mainly composed three parts: bush, elastic element, damping alloy. element used realize static dynamic sharing reduce edge effect make contact pressure evenly distributed in axial direction, thereby improving service life ...

In this paper, three-dimensional elasto-plastic finite element analysis was performed on flexible pavements under vertical repeated traffic loads to evaluate their shakedown behavior. Six different pavements with different structural number (SN) were modeled and subjected to a wide range of cyclic vehicle loads. Shakedown limits were obtained considering both failure and serviceability restrain...

Dynamic pressure oil film bearing is an important mechanical component of the ship. With the development of large-sized ships, their dynamic pressure oil films often run at high speed and under heavy load generating high oil film pressure. In addition, due to the increased use of thin walled bearing shell with materials of low elastic modulus, the elastic deformation of the bearing shell which ...

in the current study, an effort is made to determine three dimensional bearing capacity of rectangular foundations using discrete element method. the soil mass is modeled as discrete blocks connected with winkler springs. different factors affect the geometry of failure surface. six independent angles are used to define the failure surface. by trial and error, the optimum shape of failure surfa...