Finite Element Simulation of Performance Characteristics of Infinitely Wide Plane Pad Slider Bearing

2009 ◽  
Vol 62-64 ◽  
pp. 637-642 ◽  
Author(s):  
M.H. Oladeinde ◽  
John A. Akpobi
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Finite Element Simulation ◽  
Frictional Force ◽  
Maximum Point ◽  
The Finite Element Method ◽  
Slider Bearing ◽  
Aspect Ratios ◽  
Element Simulation ◽  
Element Method

The paper describes the results of a numerical study using Galerkin’s finite element method on an infinitely wide slider bearing. The analysis is based upon the generalized Reynolds equation with the assumption that the pressure gradient in the lubricating film is negligible in the axial direction. Detailed results for bearing characteristics including pressure, load capacity, frictional force, frictional coefficient as a function of film thickness ratio (aspect ratio), and velocity of slider show that these parameters have a strong influence on the bearing behavior. Specifically, it has been shown that friction coefficient and frictional force increases with lower aspect ratios. Also, higher load carrying and maximum pressure is obtained with increased speed of the slider Point wise comparison of the results obtained using the Finite Element Method and that obtained with second order Finite Difference marching Method using base parameters show that the latter simulation has a maximum point wise error of 0.46% in comparison to 0.32% for Finite Element simulation. It has been shown that the Finite Element Method produces more accurate results. The results are in tabular and graphical forms.

scholarly journals Acoustic Noise Computation of Electrical Motors Using the Boundary Element Method

Energies ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 245
Author(s):  
Sabin Sathyan ◽  
Ugur Aydin ◽  
Anouar Belahcen
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Boundary Element Method ◽  
Boundary Element ◽  
Finite Element Simulation ◽  
Acoustic Noise ◽  
The Finite Element Method ◽  
Magnetic Forces ◽  
Element Simulation ◽  
Element Method

This paper presents a numerical method and computational results for acoustic noise of electromagnetic origin generated by an induction motor. The computation of noise incorporates three levels of numerical calculation steps, combining both the finite element method and boundary element method. The role of magnetic forces in the production of acoustic noise is established in the paper by showing the magneto-mechanical and vibro-acoustic pathway of energy. The conversion of electrical energy into acoustic energy in an electrical motor through electromagnetic, mechanical, or acoustic platforms is illustrated through numerical computations of magnetic forces, mechanical deformation, and acoustic noise. The magnetic forces were computed through 2D electromagnetic finite element simulation, and the deformation of the stator due to these forces was calculated using 3D structural finite element simulation. Finally, boundary element-based computation was employed to calculate the sound pressure and sound power level in decibels. The use of the boundary element method instead of the finite element method in acoustic computation reduces the computational cost because, unlike finite element analysis, the boundary element approach does not require heavy meshing to model the air surrounding the motor.

scholarly journals Simulation of Optical Coherence Elastography in Agar Based on Finite Element Analysis

2021 ◽  
Vol 271 ◽  
pp. 04025
Author(s):  
Xingming Tao ◽  
Lihua Fang ◽  
Luchao Lin ◽  
Ruirui Du ◽  
Yinyu Song
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Finite Element Simulation ◽  
Shear Wave ◽  
Wave Velocity ◽  
Shear Wave Velocity ◽  
Tissue Elasticity ◽  
The Finite Element Method ◽  
Element Simulation ◽  
Element Method

The finite element method is used to simulate the optical coherent elastic imaging in Agar. The shear wave velocity in Agar was measured by ARF-OCE system, and then the Agar model was established by finite element method, and then the shear wave velocity in Agar model was measured. The shear wave velocity in experiment and finite element simulation were compared and analyzed. The shear wave velocity obtained in the experiment is 2.50 m/s, and the range of shear wave velocity obtained in the finite element simulation is 2.4802m/s, and the average wave velocity is 2.5167m/s. The finite element method can express tissue elasticity directly and clearly, and it plays a great guiding role in corneal elastography.

scholarly journals Analysis of Vertical Stiffness of Air Spring Based on Finite Element Method

2018 ◽  
Vol 153 ◽  
pp. 06006
Author(s):  
Jiatong Ye ◽  
Hua Huang ◽  
Chenchen He ◽  
Guangyuan Liu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Finite Element Simulation ◽  
Element Model ◽  
Simulation Method ◽  
Bench Test ◽  
Air Spring ◽  
Vertical Stiffness ◽  
Element Simulation ◽  
Element Method

In this paper, a finite element model of membrane air spring in the vehicle is established, and its vertical stiffness characteristics under a certain inflation pressure are analysed. The result of finite element simulation method is compared with the result of the air spring bench test. The accuracy and reliability of the finite element simulation method in nonlinear analysis of air spring system are verified. In addition, according to the finite element method, the influence of the installation of the air spring limit sleeve on its stiffness is verified.

Finite Element Simulation of RC Beam Strengthened with FRP

2012 ◽  
Vol 446-449 ◽  
pp. 3229-3232
Author(s):  
Chao Jiang Fu
Keyword(s):  
Experimental Data ◽  
Finite Element Method ◽  
Finite Element ◽  
Numerical Analysis ◽  
Finite Element Simulation ◽  
Fiber Reinforced Polymer ◽  
Rc Beam ◽  
The Finite Element Method ◽  
Reinforced Polymer ◽  
Element Simulation

The finite element modeling is established for reinforced concrete(RC) beam reinforced with fiber reinforced polymer (FRP) using the serial/parallel mixing theory. The mixture algorithm of serial/parallel rule is studied based on the finite element method. The results obtained from the finite element simulation are compared with the experimental data. The comparisons are made for load-deflection curves at mid-span. The numerical analysis results agree well with the experimental results. Numerical results indicate that the proposed procedure is validity.

A Review on the Finite Element Modeling of the Particle Reinforced Metal Matrix Composites in Cutting Process

2020 ◽  
Vol 14 (1) ◽  
pp. 39-55
Author(s):  
Xiaole Qi ◽  
Guohe Li ◽  
Qi Zhang ◽  
Fei Sun
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Finite Element Model ◽  
Finite Element Simulation ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Element Model ◽  
Matrix Composites ◽  
Element Simulation ◽  
Element Method

Background:: Particle Reinforced Metal Matrix Composites (PRMMCs) are widely used because of the higher specific strength, better dimensional stability, lower thermal expansion coefficient, better wear and corrosion resistance. However, the existence of reinforcing particles makes it hard to machine. The main manifestations are as follows: severe tool wear, easy generation of debris tumors in processing, and many defects on the machined surface, etc. These seriously limit its wider application. The Finite Element Method (FEM) has been widely applied in the research of PRMMCs machining according to recent patents, which can improve the efficiency and reduce the cost of research. Therefore, it is necessary to carry out a deep research for the processing technology of PRMMCs. Methods:: In this paper, the latest research progress of finite element simulation of cutting PRMMCs was summarized. The key technologies of finite element simulation, including constitutive model, geometric model, friction model between chip and tool, fracture criterion and mesh generation, are comprehensively analyzed and summarized. The application in the specific processing methods was discussed, such as turning, milling, grinding, ultrasonic vibration grinding and drilling. The existing problems and development direction of the simulation of PRMMCs cutting are also given. Besides, a lot of patents on finite element simulation for PRMMCs machining were studied. Results:: Finite element model for the actual composition determines the accuracy of finite element simulation. Through the secondary development of finite element software, a more realistic finite element model of Particle reinforced metal matrix composites can be established. Conclusion:: Finite Element Method (FEM) provides a new approach for the study of mechanism of Particle reinforced metal matrix composites machining. Quantitative analysis and prediction of micro- details in cutting can be realized.

Effects of Footfall Induced Vibrations on Concrete and Composite Floors

2015 ◽  
Vol 802 ◽  
pp. 155-160
Author(s):  
Chuen Keit Leing ◽  
Anwar Mohammed Parvez ◽  
Wael Elleithy
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Frame Structure ◽  
The Finite Element Method ◽  
Aspect Ratios ◽  
Floor Slabs ◽  
Vibration Responses ◽  
Element Method ◽  
Composite Floors

This paper investigates the effects of footfall induced vibrations on the floors of a 3-storey sub-frame structure. Composite and concrete floors were examined. Variables involved are floor widths, floor thicknesses, floor aspect ratios and column heights. Models are generated and analysed using the finite element method. The vibration responses were represented in terms of displacements and accelerations. Results show that higher vibration responses occurs on longer floor widths, thinner floor slabs and higher floor aspect ratios for both composite and concrete floors.

Analysis of Front End Bending in Plate Rolling by The Finite Element Method

1997 ◽  
Vol 119 (3) ◽  
pp. 314-323 ◽  
Author(s):  
B. H. Park ◽  
S. M. Hwang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Finite Element Simulation ◽  
Empirical Model ◽  
The Finite Element Method ◽  
Roll Speed ◽  
Speed Difference ◽  
Front End ◽  
Plate Rolling ◽  
Element Simulation

This paper deals with the problem of the front end bending arising in plate rolling. The problem, which is caused by unbalanced rolling, is investigated by the finite element simulation technique. Discussions are made on the effect of various unbalanced rolling conditions on the deformation of the front end. In particular, an empirical model is developed for the prediction of the curvature of the front end rolled under the presence of the roll speed difference.

scholarly journals Torsional Stiffness Improvement of Truck Chassis Using Finite Elemen Method

ROTASI ◽  
2017 ◽  
Vol 19 (2) ◽  
pp. 76 ◽  
Author(s):  
Ojo Kurdi ◽  
Roslan Abdul Rahman ◽  
Pakharudin Mohd Samin ◽  
Mohd Shukri Yob ◽  
Nantha Kumar Nadarajan ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Torsional Stiffness ◽  
Simulation Tool ◽  
The Finite Element Method ◽  
Comparison Result ◽  
Element Simulation ◽  
Proposed Model ◽  
Element Method ◽  
Truck Chassis

This thesis deals with a study on the torsional stiffness of existing truck chassis and some others improved models by using finite element method. The objective of this study is to improve the torsional stiffness by design and to provide simulation of the deflection on the chassis. The problem on the chassis is the deflection on the chassis whereas  higher  displacement  will  affect  the  torsional  stiffness  of  the  truck. ABAQUS was used as it is a powerful engineering simulation tool based on the finite element method. The magnitude of torsional stiffness for existing and modified models were calculated based on data of deflection of each models which were obtained from the finite element simulation. The multi holes model was choosen as the best proposed model due to the highest of torsional stffness as comparison result among existing and modified models.

Oil-Film Temperature Distribution in an Infinitely wide Slider Bearing: An Application of the Finite-Element Method

1973 ◽  
Vol 15 (4) ◽  
pp. 311-320 ◽  
Author(s):  
A. K. Tieu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Energy Equation ◽  
Three Dimensional ◽  
The Finite Element Method ◽  
Slider Bearing ◽  
Oil Film ◽  
Temperature Distributions ◽  
Oil Films ◽  
Element Method

From the Glansdorff–Prigogine local potential in non-equilibrium thermodynamics (1)† (2), a variational principle for a thin film incompressible flow with viscous dissipation is formulated as the basis of a finite-element method, which is applied to solve the energy equation. Temperature distributions in tapered land and parallel oil films for infinitely wide bearings are obtained by digital computer. The application of the finite-element method in a three-dimensional oil film with side leakage is also discussed.

Research on Nozzle Array Structure Fluidic Gyroscope Sensitive Principle

2012 ◽  
Vol 542-543 ◽  
pp. 993-996
Author(s):  
Xing Wang ◽  
Lin Hua Piao ◽  
Quan Gang Yu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Angular Rate ◽  
Central Axis ◽  
The Finite Element Method ◽  
Airflow Velocity ◽  
Element Simulation ◽  
Array Structure ◽  
And Performance ◽  
Element Method

The fluidic gyroscope sensitive principle with nozzle array structure was researched. Using the finite element method, according to the actual size, building an entity model, the finite element simulation was conducted by a series of procedures, such as meshing, loads applying and solving. Then the cavity flow field distribution was calculated in the different input angular rate. The results are as follows: In static status, airflow velocity shows a symmetry distribution through central axis of enclosure, the two hotwires endure the same current rate and current, then the bridge outputs zero. In the angular rate inputs, airflow velocity shows an asymmetry distribution through central axis of cavity. The two hotwires endure the different current rate, both of the hotwires current are changed with angular rate, then the bridge outputs a voltage with corresponding with the angular rate. The fluidic gyroscope sensitive principle with nozzle array structure is revealed by finite element method, which provides the foundation for the fluidic gyroscope structural and performance improvement.

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