A new method for static load rating of ceramic rolling bearing

Wear ◽  
1989 ◽  
Vol 133 (2) ◽  
pp. 373-383 ◽  
Author(s):  
Takeo Yoshioka ◽  
Tokio Kitahara ◽  
Hiroake Takebayashi ◽  
Tsutomu Yuine
Keyword(s):  
Static Load ◽  
Rolling Bearing ◽  
New Method ◽  
Load Rating

Design and Load Rating Analysis of the Elastic Support for a Large Roller Bearing

1970 ◽  
Vol 92 (1) ◽  
pp. 113-117 ◽  
Author(s):  
W. D. Anderson ◽  
C. L. Dellinger
Keyword(s):  
Static Load ◽  
Load Capacity ◽  
Roller Bearing ◽  
Basic Oxygen Furnace ◽  
Computer Assisted ◽  
Curved Beam ◽  
Load Rating ◽  
Basic Oxygen ◽  
Beam Design ◽  
Assisted Analysis

The Basic Oxygen Furnace comprises a tiltable vessel supported by two trunnions in large roller bearings. To accommodate thermal expansion, the floating bearing is mounted on a deep curved beam which moves axially on two linear bearings. Under loads of 1 to 2 million pounds, the elastic deflection of this beam alters the static load capacity of the roller bearing. This paper describes a computer assisted analysis based on Castigliano’s First Theorem for determining the effective bearing capacity, and secondly for optimizing the beam design.

A New Method to Optimize Locations of SVC Based on Risk and Static Load Margin

2013 ◽  
Vol 774-776 ◽  
pp. 1887-1890 ◽  
Author(s):  
Wei Zheng ◽  
Long Yue Zhang ◽  
Fu Bo Liang ◽  
Chao Ma ◽  
Yan Dong Xing
Keyword(s):  
Power System ◽  
Static Load ◽  
Risk Index ◽  
Wind Farms ◽  
System Security ◽  
New Method ◽  
Weak Links ◽  
Load Margin ◽  
Large Wind

A method was proposed selecting the location of SVC, considering the power system with large wind farms interconnected. The location can be determined by risk index, which comprises credibility and global severity, and static load margin simultaneously. The method could consider the weak links and buses under both fault and normal conditions thus make better contribution to the system security. Case study shows that the correctness and effectiveness of the proposed method, comparing with the usual one.

Fault Diagnosis to a Rolling Bearing in a Blowing Machine Based on the Theories of EMD and Intrinsic Modal Energy Entropy

2011 ◽  
Vol 284-286 ◽  
pp. 2461-2464
Author(s):  
Hai Lan Liu ◽  
Xiao Ping Li ◽  
Yan Nian Rui
Keyword(s):  
Fault Diagnosis ◽  
Classification System ◽  
Vibration Signal ◽  
Rolling Bearing ◽  
New Method ◽  
Support Vector ◽  
Rolling Bearings ◽  
System A ◽  
Energy Entropy

Based on the research of the theory and the experiment of EMD and Intrinsic Modal Energy Entropy，the vibration signal of a rolling bearing in a Blowing Machine of a certain factory was measured when working. Then the signal was decomposed by EMD, its Intrinsic Modal Energy Entropy was calculated and used as fault feature. Finally, using a Support Vector Classification System, a satisfied effect of fault diagnosis of a rolling bearing in a Blowing Machine was got. The experiment had confirmed that the method was advanced, reliable and practical. A new method was provided for fault diagnosis of rolling bearings in some Blowing Machines.

Research and Application of the Improved DST New Method Based on Fuzzy Consistent Matrix and the Weighted Average

2014 ◽  
Vol 1030-1032 ◽  
pp. 1764-1768 ◽  
Author(s):  
Wei Xiao Xu ◽  
Ji Wen Tan ◽  
Hong Zhan
Keyword(s):  
Fault Diagnosis ◽  
Evidence Synthesis ◽  
Weighted Average ◽  
Rolling Bearing ◽  
New Method ◽  
Cnc Machine ◽  
Bearing Fault Diagnosis ◽  
Dempster Shafer Theory ◽  
High Conflict ◽  
Shafer Theory

Aiming at the existing defects of evidence dempster-shafer theory (DST) in dealing with high conflict evidence, we proposed a new method to improve DST. By introducing concept of fuzzy consistent matrix, calculate the weights of factors, and put different sources of evidence into distinguish, and finally cast more than one vote to prevent the phenomenon, the average convergence of evidence. What’s more, the improved DST new method is applied to the rolling bearing fault diagnosis of CNC machine workbench .The test results show that the improved new synthetic formula increases the accuracy of fault diagnosis Ball, the conflict of evidence synthesis results better, to achieve better results.

scholarly journals Recalculation of the basic static load of ball screws

2019 ◽  
Vol 11 (7) ◽  
pp. 168781401986269 ◽  
Author(s):  
Huaxi Zhou ◽  
Changguang Zhou ◽  
Yi Ou ◽  
Zeng-Tao Chen
Keyword(s):  
Service Life ◽  
Correction Factor ◽  
Traditional Method ◽  
Measurement Method ◽  
Static Load ◽  
Accurate Method ◽  
Load Rating ◽  
Iso Standard ◽  
Modified Method ◽  
Ball Number

Based on the correction factor of accuracy applied in ISO standard 3408-4:2006, this article proposed a modified method to calculate the effective ball number and basic static load rating of ball screws. Meanwhile, the basic static load rating of ball screws was obtained through a new measurement method presented in this article. The experimental results, agreeing well with the theoretical values calculated by the modified method, showed that there is a large discrepancy between the basic static load rating calculated by the traditional method and the measured result, which proves that the new modified method is valid. This study provides a more accurate method to obtain the basic static load of ball screws, which is significant for predicting the performance and service life of ball screws.

Camshaft Efficiency Optimization: Employing the Rolling Bearing

2012 ◽  
Author(s):  
Mohsen Bayat Pour
Keyword(s):  
Internal Combustion Engines ◽  
Manufacturing Industry ◽  
Rolling Bearing ◽  
Internal Combustion ◽  
Simulation Software ◽  
New Method ◽  
Combustion Engines ◽  
Rolling Bearings ◽  
Efficiency Optimization ◽  
Advantages And Disadvantages

This paper is intended to discuss the optimization of camshaft efficiency; using the rolling bearing instead of the sliding bearing within the internal combustion engines. The advantages and disadvantages of employing this new method will be accordingly identified and determined in-order to open new windows to the vehicle manufacturing industry. Following the mentioned goal; a camshaft is designed and tested over two types of sliding and rolling bearings in the same conditions of testing. After the comparisons being made; the achieved records have been analyzed and finally the results have been concluded and discriminated by the tables. The calculations and analyses; which are reachable within this paper, are implemented by employing both simulation software and laboratory devices.

scholarly journals Weak Signal Detection Method Based on the Coupled Lorenz System and Its Application in Rolling Bearing Fault Diagnosis

2020 ◽  
Vol 10 (12) ◽  
pp. 4086
Author(s):  
Guozheng Li ◽  
Nanlin Tan ◽  
Xiang Li
Keyword(s):  
Fault Diagnosis ◽  
Power Spectrum ◽  
Lorenz System ◽  
Signal To Noise Ratio ◽  
Rolling Bearing ◽  
Synchronization Error ◽  
New Method ◽  
Rolling Bearings ◽  
Bearing Fault ◽  
Bearing Fault Diagnosis

Rolling bearings are widely used in rotating machinery. Their fault feature signals are often submerged in strong noise and are difficult to identify. This paper presents a new method of bearing fault diagnosis that combines the coupled Lorenz system and power spectrum technology. The process is achieved in the following three steps. First, a synchronization system based on the Lorenz system is constructed using the driving-response method. Second, when the tested signal is connected to the driving end, the synchronization error between the two sub-chaotic systems is obtained. Finally, the power spectrum density of the synchronization error is calculated and compared with the corresponding fault characteristic frequency. The coupled Lorenz system makes full use of the noise immunity and nonlinear amplification of the chaotic system. The detection characteristics and feasibility of the new method are verified by simulation and actual measured vibration data. The result shows that the noise reduction effect of the coupled Lorenz system is obvious. This method can improve the signal-to-noise ratio of the tested signal and provide a new way to perform fault diagnosis of rolling bearings.

Sign in / Sign up

Export Citation Format

Share Document