|
|
|
|
|
Gudeta Berhanu Benti, Jan-Olov Aidanpää and Rolf Gustavsson
In 2015, a 45 MW vertical hydropower machine exhibited excessive vibration after refurbishment. Measurements revealed a substantial bearing clearance at the lower generator guide bearing. Consequently, the bearing was unable to generate sufficient opposi...
ver más
|
|
|
|
|
|
|
|
|
|
|
Zhiqiang Guo, Shenlong Li, Wei Wu and Liuyang Zhang
The quasi-static load sharing characteristics of a planetary gear set with planet journal bearings are numerically investigated. The application of journal bearings instead of rolling bearings in planetary gear sets is an alternative to increase the rota...
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
|
|
|
|
|
|
|
|
|
|
|
Weixin Zhou, Yao Zhao, Hua Yuan, Jingxi Liu and Xiaoqiang Wang
The pressure distribution of a misaligned elastomeric journal bearing is crucial for analyzing the uneven excessive wearing of the propulsion shaft bearing. However, analysis of the misaligned bearing is usually mainly based on the finite element method ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Wu Ouyang, Qilin Liu, Qichao Cheng, Gao Wan and Yong Jin
The classical theory of centralized dynamic characteristics with eight coefficients is adopted for traditional journal bearings. However, under cantilevered load, distributed dynamic characteristics along the axial direction will be generated for the jou...
ver más
|
|
|
|
|
|
|
|
|
|
|
Yandong Gu, Jinwu Cheng, Hao Sun, Ao Liang and Li Cheng
Hydrodynamic journal bearings, coated with polytetrafluoroethylene (PTFE) and lubricated by water, have been widely used in ships and large-scale pumps, and the function is to maintain the stability of rotor system. However, slip velocity exists on the P...
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
|
|
|
|
|
|
|
|
|
|
|
Franco Concli
For decades, journal bearings have been designed based on the half-Sommerfeld equations. The semi-analytical solution of the conservation equations for mass and momentum leads to the pressure distribution along the journal. However, this approach admits ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Xichun Liu and Wei Chen
In order to improve the performance of the traditional constant-width herringbone grooved journal bearing in a computed tomography tube under a high-temperature environment, the present study designed a convergent herringbone grooved journal bearing (HGJ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Pawel Baginski, Grzegorz Zywica, Jakub Roemer, Pawel Zdziebko and Adam Martowicz
This article presents an experimental study carried out on a rotor operating on two foil bearings. One of the bearings was built in a way to measure the temperature and deformation of the top foil of the foil bearing. The dynamic performance of the two b...
ver más
|
|
|
|
|
|
|
|
|
|
|
Ali Usman, Sadia Riaz and Cheol Woo Park
|
|
|
|
|
|
|
|
|
|
|
Liao-Yong Luo, Yi-Hua Fan, Jyh-Haw Tang, Ting-Yu Chen, Nai-Rong Zhong, Pin-Chieh Feng and Yu-Chun Kao
The article describes the effect of a magnetic field applied to a ferrofluid–lubricated hydrodynamic journal bearing–rotor system. A rotor with a single journal bearing in one end was built to be the test rig. The experimental results showed ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Fábio Lúcio Santos, Maria Lúcia Machado Duarte, Marcos Túlio Corrêa de Faria, Alexandre Carlos Eduardo
Pág. 151 - 157
This paper deals with an analytical model of a rigid rotor supported by hydrodynamic journal bearings where the plane separation technique together with the Artificial Neural Network (ANN) is used to predict the location and magnitude of the correction m...
ver más
|
|
|
|
|
|
|
|
|
|
|
Katarzyna Szarzec
Pág. 5 - 6
We have the pleasure of presenting to you the next issue of our journal ?Research Papers in Economics and Finance? (REF), published by the Faculty of Economics at Poznan University of Economics and Business. Bearing in mind the highest level of our publi...
ver más
|
|
|
|
|
|
|
|
|
|
|
Katarzyna Szarzec
Pág. 5 - 6
We have the pleasure of presenting to you the next issue of our journal ?Research Papers in Economics and Finance? (REF), published by the Faculty of Economics at Poznan University of Economics and Business. Bearing in mind the highest level of our publi...
ver más
|
|
|
|
|
|
|
|
|
|
|
Ashish Kumar Srivastava, Suryank Dwivedi, Ambuj Saxena, Deepak Kumar, Amit Rai Dixit, Gyanendra Kumar Singh, Javed Khan Bhutto and Rajesh Verma
In the present study, the surface composite Al359/Si3N4/Eggshell is prepared by friction stir processing (FSP). The effect of reinforced particle volume fraction on the microstructural and tribological properties of the Al359/Si3N4/Eggshell surface compo...
ver más
|
|
|
|
|
|
|
|
|
|
|
Jamal Mohammed, Anthony Kofi Osei-Fosu, Hadrat Yusif
Pág. 12 - 31
This paper reviewed existing literature on fuel wood dependence, REDD+ and gender coping strategies. Out of 180 sets of empirical studies in this domain, twenty five (25) were considered to have a bearing on our topic. The review showed that REDD+ policy...
ver más
|
|
|
|
|
|
|
|
|
|
|
José Ricardo López-Robles,Jose Ramón Otegi-Olaso,Rubén Arcos,Nadia Karina Gamboa- Rosales,Hamurabi Gamboa-Rosales
Today, organizations are facing technological, economic and social challenges thatrequire the intelligent use of data, information and knowledge. To this end, organizations aredeveloping capabilities around intelligence. From the organizational point of ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Shreejana Bhusal, Kabiraj Paudyal
Pág. 275 - 285
Arsenic is one of the 92 natural elements found in Earth crust which is referred as" King of Poison". Arsenic contamination in groundwater has been recognized as a great threat to water supply and public health in many countries in the world (WHO 1993). ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Shreejana Bhusal, Kabiraj Paudyal
Pág. 275 - 285
Arsenic is one of the 92 natural elements found in Earth crust which is referred as" King of Poison". Arsenic contamination in groundwater has been recognized as a great threat to water supply and public health in many countries in the world (WHO 1993). ...
ver más
|
|
|
|
|
|