Results 21 to 30 of about 10,082 (264)

Study on Wear Characteristic of Rolling Bearing Caused by Rolling-sliding Motion

Jixie chuandong, 2021
Rolling-sliding motion is a special motion form which leads to the failure of rolling bearings. In order to study the wear characteristics of rolling bearings under rolling-sliding motion， the method of combining simulation with experiment is adopted ...
Zhongyang Li, Xinyu Pang, Zongqing Yan, Lei Zhang   +3 more
doaj  

Numerical study of laminar flow and friction characteristics in narrow channels under rolling conditions using MPS method

Nuclear Engineering and Technology, 2019
Modern small modular nuclear reactors can be built on a barge in ocean, therefore, their flow characteristics depend upon the ocean motions. In the present research, effect of rolling motion on flow and friction characteristics of laminar flow through ...
Muhammad Abdul Basit, Wenxi Tian, Ronghua Chen, Suizheng Qiu, Guanghui Su   +4 more
doaj   +1 more source

Granular packings with sliding, rolling, and twisting friction [PDF]

Physical Review E, 2020
Intuition tells us that a rolling or spinning sphere will eventually stop due to the presence of friction and other dissipative interactions. The resistance to rolling and spinning/twisting torque that stops a sphere also changes the microstructure of a granular packing of frictional spheres by increasing the number of constraints on the degrees of ...
A. P. Santos, Dan S. Bolintineanu, Gary S. Grest, Jeremy B. Lechman, Steven J. Plimpton, Ishan Srivastava, Leonardo E. Silbert   +6 more
openaire   +3 more sources

On rolling friction

Доклады Академии наук, 2019
The dependence of rolling friction on velocity for various contact conditions is discussed. The principal difference between rolling and other types of relative motion (sliding and spinning) is that the points of the body in contact with the support change over time.
openaire   +2 more sources

Simulation Analysis of Friction Moment Characteristic of Rolling-sliding Bearing

Jixie chuandong, 2021
It is difficult to measure the friction torque of bearing parts in practice. In order to study the variation law of the friction torque of rolling-sliding bearings and the influence of the structure parameters on it， the simulation analysis of rolling ...
Liming Lu, Zhi Niu, Jinfu Lu, Fu Li
doaj  

Calibration and analysis of discrete element simulation parameters of Chinese cabbage seeds.

PLoS ONE, 2022
ObjectiveTo improve the accuracy of parameters used in discrete element simulation test of Chinese cabbage seeds harvesting process.MethodsFirstly, the key physical parameters of Chinese cabbage seeds were measured. According to the results, the discrete
Shengsheng Wang, Lu Mengqing, Xingyi Liu, Jiangtao Ji, Pan Chen   +4 more
doaj   +1 more source

Performance Analysis of Abradable Coating Systems for Aircraft Gas Turbines

Advanced Engineering Materials, EarlyView.
Three CoNiCrAlY/YSZ/MgAl2O4 abradable liner configurations on a nickel‐superalloy are evaluated by thermal‐gradient cycling and incursion tests. Laser ablation of the bondcoat and/or Y2O3‐stabilized ZrO2 (YSZ) intermediate layer increases mechanical interlocking and bonding for thick topcoats.
Hanna Heyl, Daniel Emil Mack, Martin Tandler, Susanne Schrüfer, Robert Vaßen   +4 more
wiley   +1 more source

Calibration of discrete element simulation parameters for different kinds of rice grains

Shipin yu jixie
ObjectiveTo provide a theoretical reference for the optimal design of the polisher structure by comparing the differences in the contact parameters of different kinds of rice.MethodsUsing bench test and simulation test, and combining with MATLAB software
ZHU Linfeng, LIU Xiaopeng, ZHANG Yonglin, SONG Shaoyun, YIN Qiang, CAO Meili   +5 more
doaj   +1 more source

Understanding and designing post-build rolling for mitigation of residual stress and distortion in wire arc additively manufactured components

Materials & Design, 2022
Post-build rolling can mitigate residual stress (RS) and distortion in large-scale components built by wire arc additive manufacturing (WAAM). In this study, based on numerical simulations that considered both WAAM deposition and vertical rolling, the ...
Valeriy Gornyakov, Jialuo Ding, Yongle Sun, Stewart Williams   +3 more
doaj   +1 more source

Solid‐State Diffusion and Intermetallic Phase Formation in Roll‐Bonded Mg–Zn Composites With Kirigami‐Patterned Inlay

Advanced Engineering Materials, EarlyView.
Mg–Zn composites with a thickness of 0.21 mm were fabricated using roll bonding of a kirigami‐patterned Mg alloy inlay within a Zn matrix. Thermal activation following this process led to the formation of tailored intermetallic structures, which provided the composite with enhanced flexural strength.
Yaroslav Frolov, Oleksandr Bobukh, Christian Klose, Florian Nürnberger, Hans Jürgen Maier   +4 more
wiley   +1 more source