A Study of Wind Generator Set Planetary Gear Transmission Dynamics Analysis

2010 ◽  
Vol 168-170 ◽  
pp. 2590-2594
Author(s):  
Jian Jie Zhang ◽  
Wen Lei Sun ◽  
Lei Lei Ma
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Planetary Gear ◽  
Scientific Basis ◽  
Gear Transmission ◽  
Transmission Dynamics ◽  
Dynamics Analysis ◽  
Wind Generator ◽  
Element Method

This paper on wind generator set planetary gear had a simple introduction, and finite element method was used on the planetary gear transmission dynamics analysis, the conclusion was drawn that the different planetary gear in the direction of the force and deformation, so as to improve the quality of the gear is designed to provide a scientific basis.

Towards Predicting Relative Belt Edge Endurance With the Finite Element Method

1990 ◽  
Vol 18 (4) ◽  
pp. 216-235 ◽  
Author(s):  
J. De Eskinazi ◽  
K. Ishihara ◽  
H. Volk ◽  
T. C. Warholic
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Three Dimensional ◽  
The Finite Element Method ◽  
Shear Deformations ◽  
Element Analysis ◽  
Vertical Loading ◽  
Predicted Values ◽  
Element Method

Abstract The paper describes the intention of the authors to determine whether it is possible to predict relative belt edge endurance for radial passenger car tires using the finite element method. Three groups of tires with different belt edge configurations were tested on a fleet test in an attempt to validate predictions from the finite element results. A two-dimensional, axisymmetric finite element analysis was first used to determine if the results from such an analysis, with emphasis on the shear deformations between the belts, could be used to predict a relative ranking for belt edge endurance. It is shown that such an analysis can lead to erroneous conclusions. A three-dimensional analysis in which tires are modeled under free rotation and static vertical loading was performed next. This approach resulted in an improvement in the quality of the correlations. The differences in the predicted values of various stress analysis parameters for the three belt edge configurations are studied and their implication on predicting belt edge endurance is discussed.

Smoothed particle hydrodynamics versus finite element method for blast impact

2013 ◽  
Vol 61 (1) ◽  
pp. 111-121 ◽  
Author(s):  
T. Jankowiak ◽  
T. Łodygowski
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Smoothed Particle Hydrodynamics ◽  
Concrete Slab ◽  
The Finite Element Method ◽  
Particle Hydrodynamics ◽  
Mesh Density ◽  
Smoothed Particle ◽  
Element Method

Abstract The paper considers the failure study of concrete structures loaded by the pressure wave due to detonation of an explosive material. In the paper two numerical methods are used and their efficiency and accuracy are compared. There are the Smoothed Particle Hydrodynamics (SPH) and the Finite Element Method (FEM). The numerical examples take into account the dynamic behaviour of concrete slab or a structure composed of two concrete slabs subjected to the blast impact coming from one side. The influence of reinforcement in the slab (1, 2 or 3 layers) is also presented and compared with a pure concrete one. The influence of mesh density for FEM and the influence of important parameters in SPH like a smoothing length or a particle distance on the quality of the results are discussed in the paper

Application of the Finite Element Method (FEM) through GFAS Software to the study of a tunnel

2021 ◽  
Vol 4 (2) ◽  
pp. 001
Author(s):  
Maurizio Ponte ◽  
◽  
Filippo Catanzariti ◽  
Gloria Campilongo
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Computational Simulation ◽  
Theoretical Method ◽  
The Finite Element Method ◽  
Tunnel Excavation ◽  
Analysis System ◽  
Quality Of Products ◽  
Element Method

Computational simulation is widely used in companies to perform analysis and improve the quality of products and projects. Most of these analyses are carried out using software that uses the Finite Element Method, which allows to obtain answers to numerous engineering problems. In this study, two examples of application to the study of tunnels of the Finite Element Method using the Geostru Software "GFAS - Geotechnical F.E.M. Analysis System" are proposed. The case of a tunnel excavated inside a granite rock massif was analyzed, first determining the state of stresses in the cavity contour through a theoretical method and comparing these results with those obtained in the software. Then, by means of finite element modeling, the settlements induced by the excavation were determined. Finally, the problem of tunnel excavation in a viscoplastic rock mass is presented and the authors propose a comparison of the analytical and numerical method.

Material Selection Based on Finite Element Method in Customized Iliac Implant

2020 ◽  
Vol 1000 ◽  
pp. 82-89
Author(s):  
Dhyah Annur ◽  
Muhammad S. Utomo ◽  
Talitha Asmaria ◽  
Daniel P. Malau ◽  
Sugeng Supriadi ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Material Selection ◽  
Potential Candidate ◽  
Basic Study ◽  
Common Location ◽  
Weight Support ◽  
Natural Geometry ◽  
Element Method

Osteosarcoma, as the most frequent bone tumor cases, can be found in the pelvis bone. Within the pelvis, the ilium is the most common location for osteosarcoma, followed by the acetabulum and then the ischium. Surgery of pelvis is difficult and the reconstruction is complicated mainly due to the geometry complexity and also the weight support function of the pelvis. Endoprosthesis of the ilium is therefore designed to increase the quality of life of the patient. In this study, the iliac implant is designed based on the natural geometry of the ilium, and the size is modified to fit the morphometry of the Eastern Asian. A finite element method (FEM) is proposed as a basic study in material selection. Titanium and its alloy (Ti-6Al-4V) are studied as the potential candidate for the proposed implant while the finite analysis of the bone was also included. As a preliminary study, in this FEM, only the static load is given, each material is assumed to be isotropic and the contacts were considered bonded. FEM in this study is expected to give a better understanding of the stress distribution, and to optimize the selection of materials.

Dynamics Analysis of a Double-Disk Rotor with Two Breathing Cracks Based on Finite Element Method

2011 ◽  
Vol 4 (8) ◽  
pp. 3211-3218
Author(s):  
Changli Liu ◽  
Li Cui ◽  
Jun Jiang ◽  
Pengru Xie ◽  
Jianrong Zheng
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Dynamics Analysis ◽  
Element Method

A Finite Element Method for the Dynamic Analysis of Automatic Transmission Gear Shifting with a Four-Degree-of-Freedom Planetary Gearset Element

2003 ◽  
Vol 217 (6) ◽  
pp. 461-473 ◽  
Author(s):  
N Zhang ◽  
A Crowther ◽  
D K Liu ◽  
J Jeyakumaran
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Automatic Transmission ◽  
Free Vibration Analysis ◽  
Planetary Gear ◽  
Rigid Body Dynamics ◽  
Degree Of Freedom ◽  
Parametric Change ◽  
Stiffness And Damping ◽  
Element Method

A dynamic model of a passenger car automatic transmission and driveline is developed for simulating transient torsional vibration in gearshifts. A finite element method is proposed for presenting the transient dynamics of the parametric system, element matrices are defined and then global inertial, stiffness and damping matrices are formulated corresponding to the defined global coordinate vectors. A four-degree-of-freedom matrix element is developed that describes the rigid body dynamics of the planetary gear set and is then integrated with the driveline system; this element captures the parametric change while the transmission speed ratios vary over gearshifts. Free vibration analysis and a transient 2-3 upshift simulation are discussed and results presented.

Reconstruction of the Main Cylinder of Carding Machine-Optimization of Dimensions with the Use of the Finite Element Method

2012 ◽  
Vol 59 (2) ◽  
pp. 199-211 ◽  
Author(s):  
Piotr Danielczyk ◽  
Jacek Stadnicki
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Parametric Design ◽  
Optimal Solution ◽  
The Finite Element Method ◽  
Deflection Amplitude ◽  
Textile Technology ◽  
Carding Machine ◽  
Element Method

Reconstruction of the Main Cylinder of Carding Machine-Optimization of Dimensions with the Use of the Finite Element MethodThe following paper presents the solution to the problem of searching the best shape - structural form of the bottoms and optimal dimensions of the main cylinder of the carding machine with consideration to the criterion of minimal deflection amplitude. The ANSYS package of the Finite Element Method has been used for the analysis. Polak-Ribery conjugate gradient method has been applied for searching the optimal solution, basing on the parametric model of the cylinder written with the use ofAnsys Parametric Design Language.As a result of the performed analyses, reduction of maximum deflection value at approximately 80% has been obtained. Optimal cylinder dimensions enable application of a new textile technology - microfibre carding and improvement in the quality of traditional carding technology of woollen and wool-like fibres.

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