|
|
|
|
|
Ishaq Hafez and Rached Dhaouadi
This study presents hybrid particle swarm optimization with quasi-Newton (HPSO-QN), a hybrid optimization method for accurately identifying mechanical parameters in two-mass model (2MM) systems. These systems are commonly used to model and control high-p...
ver más
|
|
|
|
|
|
|
|
|
|
|
Tao He, Yingzhi Zhou, Yong Liu and Yang Xia
The cavitation phenomenon and shaft deformation have a significant impact on the tribological performance of the journal bearing. A mixed lubrication model is developed that takes into account surface roughness and asperity contact, as well as the effect...
ver más
|
|
|
|
|
|
|
|
|
|
|
Yanzhong Wang, Delong Dou and Xiaoyan Dong
The non-return mechanism is the key device that plays the role of braking in the opening-and-closing electric actuator of an amphibious aircraft hatch door. The ball-and-socket contact pair, providing the pressing force, and the multi-disc friction pair,...
ver más
|
|
|
|
|
|
|
|
|
|
|
Kwang-Hee Lee, Hyungjong Kim and Tae-Yong Kuc
This paper presents a state observer for an elastic joint with nonlinear friction via the information from an acceleration sensor. In order to avoid discontinuities, the nonlinear friction of the motor, which includes static, coulomb, and viscous terms, ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Fengming Du, Dawei Li, Xiaoxia Sa, Cong Li, Yang Yu, Chengdi Li, Jingsi Wang and Weiwei Wang
Sliding bearings are critical components of the internal combustion engine. Friction and wear occur in the contact area between the shaft and the bearing. Significant wear can occur in poor working conditions or after a long service time, leading to the ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Jiangming Wu, Hongzhi Yan, Shuangqi Liu, Yin Zhang and Wuzhong Tan
The modeling and simulation of gearboxes is important for analyzing the dynamic characteristics and designing control strategies of transmission systems. Variable-speed gearboxes include compound planetary gear trains and clutches, which complicates dyna...
ver más
|
|
|
|
|
|
|
|
|
|
|
Jae-Il Jeong, Jong-Hyoung Kim, Si-Geun Choi, Young Tae Cho, Chan-Kyu Kim and Ho Lee
The bearing is a machine element that plays an important role in rotating the shaft of a machine while supporting its weight and load. Numerous bearings have been developed to improve durability and life, depending on the functions and operating conditio...
ver más
|
|
|
|
|
|
|
|
|
|
|
Yaxing Cai, Yujun Chen, Yazhong Luo and Xinglong Wang
For the rigid impact and flexible impact in space operation tasks, impact dynamic models between two objects are established in this paper, laying the model foundation for controlling or suppressing the impact. For the capture task between a grapple shaf...
ver más
|
|
|
|
|
|
|
|
|
|
|
Martin Dobrovolný, Vladimír Habán, Jana Tancjurová and Jan Zbavitel
The limited functionality of seals that are used in hydraulic machines to prevent the liquid from leaking into the bearings may result in decrease in machine efficiency and reliability and may cause an accident of the whole hydraulic machine. However, no...
ver más
|
|
|
|
|
|
|
|
|
|
|
Vladimir Kodnyanko, Stanislav Shatokhin, Andrey Kurzakov, Yuri Pikalov, Iakov Pikalov, Olga Grigorieva, Lilia Strok and Maxim Brungardt
Aerostatic bearings are attractive, with minimal friction losses, high durability, and environmental friendliness. However, such designs have a number of disadvantages, including low load-bearing capacity and high compliance due to high air compressibili...
ver más
|
|
|
|
|
|