Study on Accurate Strength Analysis of Blade Wheel in Vehicular Hydraulic Retarder Based on Sequential Coupling Method

2011 ◽  
Vol 346 ◽  
pp. 103-108
Author(s):  
Wei Wei ◽  
Bo Zou ◽  
Qing Dong Yan ◽  
Hui Yuan Li
Keyword(s):  
Fluid Pressure ◽  
Three Dimensional ◽  
Strength Analysis ◽  
Commercial Code ◽  
Dimensional Finite Element ◽  
Sequential Coupling ◽  
Hydraulic Retarder ◽  
Three Dimensional Finite Element ◽  
Fluid Solid Interaction ◽  
Ansys Workbench

Based on theory of fluid-solid interaction (FSI), a three dimensional finite element computational model of blade wheel in a vehicular hydraulic retarder was built considering accurate fluid pressure and centrifugal stress with unidirectional FSI method, and viscous numerical simulation of computational fluid dynamics and then strength analysis were implemented, and the reliability of blade wheel was verified. The results showed that incipient fault of safety existed in the root of rotor blade, and the method of accurate strength analysis was credible and facilitate on the platform of commercial code of ANSYS/Workbench.

Finite Element Analyses of a Butterfly Valve Assembly

1989 ◽  
Vol 111 (2) ◽  
pp. 197-202
Author(s):  
B. Goksel ◽  
J. J. Rencis ◽  
M. Noori
Keyword(s):  
Finite Element ◽  
Fluid Pressure ◽  
Three Dimensional ◽  
Finite Element Analyses ◽  
Butterfly Valve ◽  
Commercial Code ◽  
Valve Assembly ◽  
Dimensional Finite Element ◽  
Static Fluid ◽  
Three Dimensional Finite Element

Two and three-dimensional finite element analyses of a butterfly valve assembly subjected to static fluid pressure were carried out using commercial code ANSYS. Good agreement between the experimental and finite element results were obtained. Sensitivity of results to various boundary and loading conditions was also investigated.

Finite Elements Developed in Cylindrical Coordinates for Three-Dimensional Tire Analysis

1997 ◽  
Vol 25 (1) ◽  
pp. 2-28 ◽  
Author(s):  
K. T. Danielson ◽  
A. K. Noor
Keyword(s):  
Finite Element ◽  
Finite Elements ◽  
Three Dimensional ◽  
Cylindrical Coordinates ◽  
Element Analysis ◽  
Cartesian Coordinates ◽  
Automobile Tire ◽  
Commercial Code ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

Abstract Finite elements developed in cylindrical coordinates are presented for three-dimensional analysis of tires. In contrast to elements formulated in Cartesian coordinates, these elements allow the exact representation of circular shapes. The exact modeling of circular geometries can provide better finite element predictions and reduce the number of elements needed around the tire circumference. Numerical results are presented for the application of this formulation to the analysis of a radial automobile tire subjected to rim mounting, nonconservative inflation pressure, and rigid pavement contact. The predictions of the foregoing finite elements are compared to experimental data and to predictions of a commercial code using finite elements developed in Cartesian coordinates. The comparisons demonstrate the accuracy and the advantages of the cylindrical coordinate formulation for the three-dimensional finite element analysis of tires.

Hydrodynamic Analysis and Fluid-Solid Interaction Effects on the Behavior of a Compliant Wall (Thick) Journal Bearing. Part 1: Theory

1989 ◽  
Vol 111 (1) ◽  
pp. 70-79 ◽  
Author(s):  
M. J. Braun ◽  
J. D. Dougherty
Keyword(s):  
Fluid Pressure ◽  
Three Dimensional ◽  
Element Model ◽  
Axisymmetric Body ◽  
Working Fluid ◽  
Hydrodynamic Analysis ◽  
Compliant Wall ◽  
Method Of Solution ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

In the first part of this two part paper we have introduced a new hybrid model for the solution of the compliant wall bearing problem. A cylindrical three dimensional finite element model (FEM) for an axisymmetric body, subjected to nonaxisymmetric loading has been combined with a finite difference model (FDM) for the solution of the fluid pressure Reynolds equation. The latter equation handles both axial misalignment and the working fluid variable properties. The pressures were expressed as continuous Fourier series along the circumference and provided the nodal forces for the loading the compliant liner. The method of solution is an iterative procedure which combines the FEM and the FDM algorithms to yield the deformation of the liner and the bearing pressure map.

Pontoon Torsional Strength Analysis Related to Ships with Large Deck Openings

1991 ◽  
Vol 35 (04) ◽  
pp. 339-351
Author(s):  
Ivo Senjanovic ◽  
Ying Fan
Keyword(s):  
Finite Element ◽  
Three Dimensional ◽  
Beam Theory ◽  
Element Model ◽  
Middle Part ◽  
Strength Analysis ◽  
Element Formulation ◽  
Dimensional Finite Element ◽  
Torsional Analysis ◽  
Three Dimensional Finite Element

The torsional problem of a pontoon, consisting of channel middle part and rectangular tube peaks, isconsidered within the higher-order beam theory. The cross section and the contour compatibility conditions for assembling of the pontoon parts are investigated. The acceptability of the introduced assumptions is checked by three-dimensional finite-element model analysis. Some deficiencies of the classical beam theory regarding the girder stiffness are noticed. The finite-element formulation to be used for the torsional analysis of the ship's hull with large hatch openings is given.

Strength Analysis of Crankshaft Interfaces Considering Contact Problem

2014 ◽  
Vol 945-949 ◽  
pp. 680-683
Author(s):  
Lin Hui Ouyang ◽  
Xiao Tao Deng ◽  
Zhu Feng Yue
Keyword(s):  
Contact Problem ◽  
Three Dimensional ◽  
Element Model ◽  
Work Conditions ◽  
Strength Analysis ◽  
Yield Limit ◽  
Maximal Stress ◽  
Dimensional Finite Element ◽  
Caterpillar Tractor ◽  
Three Dimensional Finite Element

Since the work conditions of the crankshaft are complicated and the crankshaft interfaces are very weak, strength analysis of crankshaft interfaces is very important. Three dimensional finite element model of the crankshaft is built for strength analysis of the crankshaft interfaces. The crankshaft has three interfaces. During the analysis, contact problem is taken into account. The results show that the maximal stress of the crankshaft is 535MPa, which is less than the yield limit of 1Cr11Ni2W2MoV steel (993MPa). Therefore, the crankshaft interfaces can not be broken during the work of caterpillar tractor.

Development of a Three-Dimensional Finite Element Knee Prosthesis Model

2016 ◽  
Vol 822 ◽  
pp. 150-155
Author(s):  
Daniela Tarniţă ◽  
Dan Calafeteanu ◽  
Marius Catana ◽  
Ionut Geonea ◽  
Dan Tarnita
Keyword(s):  
Mesh Generation ◽  
Software Package ◽  
Geometric Modeling ◽  
Knee Prosthesis ◽  
Three Dimensional ◽  
Contact Conditions ◽  
Prosthetic Knee ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element ◽  
Ansys Workbench

This paper presents the three-dimensional geometric modeling of the knee prosthesis components using the latest generation of CAD-CAE applications as DesignModeler and SpaceClaim under Ansys Workbench software package. The mesh generation and the contact conditions are presented. The parameterized virtual models of the knee prosthesis allow different changes in shape or dimensions which can lead to the optimization of the implant and of the biomechanics of the prosthetic knee.

Sealing Analysis of Cement Plug in Offshore Abandoned Wells

2020 ◽  
Vol 993 ◽  
pp. 1333-1340
Author(s):  
Geng Tang ◽  
Hui Yan ◽  
Jun Li ◽  
Xue Feng Song ◽  
Xin Zhang ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Fluid Pressure ◽  
Three Dimensional ◽  
Element Model ◽  
Gas Wells ◽  
Oil And Gas Wells ◽  
Dimensional Finite Element ◽  
Abandoned Wells ◽  
Three Dimensional Finite Element ◽  
Cement Plug

A three-dimensional finite element model of stratum-cement ring-casing-cement plug was established for the failure analysis of the cement plug seal in the abandoned oil and gas wells. The mechanical parameters, length, bottom fluid pressure and casing swaging length of the cement plug under non-uniform ground stress conditions were analyzed. The results showed that when the bottom of the cement plug was subjected to fluid pressure, the stress at the interface between the cement plug and the casing increased, and thereby the cement plug at the bottom and the cementation of the casing failed, resulting in a the decrease in the sealing performance of the cement plug, which may be sealed under fluid corrosion. As the modulus of elasticity and the radius of the cement plug increased, the cement plug stress and the cement failure length increased. As the cement plug length increased, the cement plug stress and the cement failure length decreased, while Poisson's ratio for the cement plug stress and the cement failure length increased. The increase of the bottom fluid pressure could increase the cement plug stress and the cementation failure length. In the abandoned well, where the casing was forged and then grinded after the casing was forged, the length of the casing milling increased, the plug stress of cement reduced. These findings can provide insightful potentials for the parameters of cement plugs when the cement plugs are closed in the offshore oil and gas wells.

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