Analysis of the Nominal Load Effects on Gear Load Capacity Using the Finite-Element Method

2010 ◽  
Vol 224 (11) ◽  
pp. 2539-2548 ◽  
Author(s):  
I Atanasovska ◽  
R Mitrović ◽  
D Momĉilović ◽  
A Subic
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Significant Influence ◽  
Load Distribution ◽  
Load Capacity ◽  
The Finite Element Method ◽  
Gear Teeth ◽  
Load Effects ◽  
Nominal Load ◽  
Element Method

This research investigates the effects of the nominal load value on load distribution of simultaneously meshing gear teeth pairs, and on the involute gear load capacity. The research results presented in this article confirm that the nominal load value has a significant influence on the gear load capacity calculations. However, this influence is generally neglected in standard gear calculations, which can result in oversized gear dimensions. This can lead to inadequate gear designs in practice due to increased demand for reduced gear size and weight in modern machinery. The article provides a detailed description of the iterative numerical method developed in this research to support the modelling and analysis of load distribution in meshed gears using the finite-element method.

Analysis of Aerodynamic Journal Bearings With Small Number of Herringbone Grooves by Finite Element Method

1994 ◽  
Vol 116 (4) ◽  
pp. 698-704 ◽  
Author(s):  
D. Bonneau ◽  
J. Absi
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Study ◽  
Load Capacity ◽  
Journal Bearings ◽  
The Finite Element Method ◽  
Bearing Number ◽  
Comparison Of The Results ◽  
Herringbone Grooves ◽  
Element Method

A numerical study of gas herringbone grooved journal bearings is presented for small number of grooves. The compressible Reynolds equation is solved by use of the Finite Element Method. The nonlinearity of the discretized equations is treated with the Newton-Raphson procedure. A comparison of the results for a smooth bearing with previously published results is made and the domain of validity of the Narrow Groove Theory is analyzed. Load capacity, attitude angle, and stiffness coefficients are given for various configurations: groove angle and thickness of grooves, bearing number, and that for both smooth and grooved member rotating.

Finite element analysis of a cylindrical approach for shrink-fit precision gear forging dies

2003 ◽  
Vol 217 (6) ◽  
pp. 677-685 ◽  
Author(s):  
M A Kutuk ◽  
O Eyercioglu ◽  
N Yildirim ◽  
A Akpolat
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Analytical Approach ◽  
Thick Wall ◽  
The Finite Element Method ◽  
Element Analysis ◽  
Gear Teeth ◽  
Methods Analytical ◽  
Shrink Fit ◽  
Element Method

The design of shrink-fit precision gear forging dies based on strength considerations using an analytical (thick-wall cylinders) approach and the finite element method are compared. While the two methods, analytical and finite element, agree well for the dies with no irregularities (gear teeth), the finite element method predicts much higher stress values than those of the analytical approach for the dies with gear teeth. These high stresses are considerably reduced by reoptimizing the geometric parameters, such as the interference between the die and the ring.

Static Analysis of Buttress Threads Using the Finite Element Method

1992 ◽  
Vol 114 (2) ◽  
pp. 209-212 ◽  
Author(s):  
A. Chaaban ◽  
M. Jutras
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
High Pressure ◽  
Load Distribution ◽  
Pressure Vessels ◽  
Stress Index ◽  
The Finite Element Method ◽  
Thread Root ◽  
Root Stress ◽  
Element Method

The finite element method has been used to investigate the stress field in threaded end closures of thick-walled high pressure vessels. A set of elastic analyses of vessels with 5, 8, 11, 15, 20 and 25 standard Buttress threads was used to propose a method for predicting the load distribution along the length of the thread. Root stress index factors in the region of the first three active threads are also included. The results of the present work contribute to the development of the new division of the ASME Pressure Vessel Code which is related to thick-walled high pressure vessels.

An Investigation of the Characteristics of Electromagnetic Bearings Using the Finite Element Method

1994 ◽  
Vol 116 (4) ◽  
pp. 710-719 ◽  
Author(s):  
Foam-Zone Hsiao ◽  
An-Chen Lee
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Load Capacity ◽  
Nonlinear Behavior ◽  
Ball Bearings ◽  
The Finite Element Method ◽  
Nonlinear Characteristics ◽  
Nonlinear Relation ◽  
Flux Leakage ◽  
Element Method

The load capacity of EMBs with a restricted air gap is usually small in comparison with that of traditional ball bearings. One possible way to overcome this limitation is to increase the operation field strength of EMBs; however, this approach unavoidably involves nonlinear characteristics of EMBs. This paper investigates the nonlinear behavior of two commonly used types of EMBs by using the finite element method, in which the nonlinear relation of the B-H curve, the flux leakage, and the fringing effect are taken into account. The behavior of the EMBs under different bias currents and gap lengths is investigated, as are the effects of geometric parameters on the bearing characteristics. The results of the paper provide a useful guide for designing EMBs when using their nonlinear characteristics.

Method for calculating the load capacity of a cycloidal gear reducer with plastic satellites

2020 ◽  
pp. 15-20
Author(s):  
A.S. Ivanov ◽  
M.M. Ermolaev ◽  
A.V. Chirkin
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Calculation Method ◽  
Load Capacity ◽  
System Of Equations ◽  
The Finite Element Method ◽  
Crank Mechanism ◽  
Elastic Characteristics ◽  
Element Method

A method for calculating the load capacity of cycloidal gear reducers with a parallel crank mechanism is described, taking into account the elastic characteristics of the parts and the clearance in engagement. The calculation can also be used for cycloidal gear reducers of other types due to the use of the finite element method (FEM) and modifications of the system of equations used in the FEM. An example of calculating of a reducer with a satellite made of polyamide is given. Keywords cycloidal gear reducer, calculation method, finite element method, satellite from plastic. [email protected]

scholarly journals The influence of selected factors on the load capacity of sewers that are renovated using the relining method

2018 ◽  
Vol 45 ◽  
pp. 00057
Author(s):  
Beata Nienartowicz
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Computer Simulations ◽  
Load Capacity ◽  
Laboratory Research ◽  
The Finite Element Method ◽  
Fem Simulations ◽  
Lengthy Analysis ◽  
Element Method

The paper contains the results of a lengthy analysis of the operation of sewers renovated using the relining method. The author based the analysis on the effects obtained from computer simulations that were carried out using the Finite Element Method. The models used to proceed with the FEM simulations were verified by the results obtained from 1:1 laboratory research, conducted by the author over the period 2011-2013. The influence of a few strictly defined factors, related to the cooperation between the liner, injection grout and the construction of the original pipe, were taken into consideration. The report contains the description of FEM simulations and their assumptions, as well as a synthetic analysis of the results.

Simulation of tuning graphene plasmonic behaviors by ferroelectric domains for self-driven infrared photodetector applications

Nanoscale ◽  
2019 ◽  
Vol 11 (43) ◽  
pp. 20868-20875 ◽  
Author(s):  
Junxiong Guo ◽  
Yu Liu ◽  
Yuan Lin ◽  
Yu Tian ◽  
Jinxing Zhang ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Interfacial Effect ◽  
Infrared Photodetector ◽  
The Finite Element Method ◽  
Ferroelectric Domains ◽  
Element Method

We propose a graphene plasmonic infrared photodetector tuned by ferroelectric domains and investigate the interfacial effect using the finite element method.

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