Results 21 to 30 of about 114,140 (286)

Modeling and experimentation of the friction force of linear rolling guide pair considering oil film resistance

工程科学学报, 2017
For an accurate prediction of the friction experienced by the linear rolling guide and the factors affecting it, the fluid lubrication state of the rail was considered, and the effect of the friction of the linear guide on the ball contact angle and ...
ZHANG Wei, WANG Min, KONG De-shun
doaj   +1 more source

Rolling friction for hard cylinder and sphere on viscoelastic solid

, 2010
We calculate the friction force acting on a hard cylinder or spherical ball rolling on a flat surface of a viscoelastic solid. The rolling friction coefficient depends non-linearly on the normal load and the rolling velocity.
Persson, B. N. J.
core   +1 more source

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

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

Rolling friction of a viscous sphere on a hard plane

, 1998
A first-principle continuum-mechanics expression for the rolling friction coefficient is obtained for the rolling motion of a viscoelastic sphere on a hard plane.
, Barwell F. T., Carter F. W., Czichos H., Dowson D., Drutowski R. C., Fuller K. N. G., Heathcote H. L., Hertz H., Huang R. Q., Krause H., Landau L. D., Li Y. F., Prashad H., Rabinowicz E., Reynolds O., Shpenkov G. P., Szeri A. Z., Tabor D., Vince S., Zum Gahr K. R.   +20 more
core   +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

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  

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 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