Author: Gholam Reza HosseiniPublisher:
ISBN:
Category : Finite element method
Languages : en
Pages : 352
Book Description
Development of an Automatic Three Dimensional Finite Element Mesh Generation Program for Spur and Helical Gear Teeth
Author: Gholam Reza HosseiniPublisher:
ISBN:
Category : Finite element method
Languages : en
Pages : 352
Book Description
Development of a Three Dimensional Automatic Mesh Generation Program for Finite Quasi Prismatic Analysis of Spur and Helical Gears
Author: Atul JhalaniScientific and Technical Aerospace Reports
Author: An Approach to Automatic Coarse Three-dimensional Finite Element Mesh Generation
Author: James A. LoFinite Element Mesh Generation
Author: Daniel S.H. LoPublisher: CRC Press
ISBN: 041569048X
Category : Technology & Engineering
Languages : en
Pages : 676
Book Description
Highlights the Progression of Meshing Technologies and Their Applications Finite Element Mesh Generation provides a concise and comprehensive guide to the application of finite element mesh generation over 2D domains, curved surfaces, and 3D space. Organised according to the geometry and dimension of the problem domains, it develops from the basic meshing algorithms to the most advanced schemes to deal with problems with specific requirements such as boundary conformity, adaptive and anisotropic elements, shape qualities, and mesh optimization. It sets out the fundamentals of popular techniques, including: Delaunay triangulation Advancing-front (ADF) approach Quadtree/Octree techniques Refinement and optimization-based strategies From the geometrical and the topological aspects and their associated operations and inter-relationships, each approach is vividly described and illustrated with examples. Beyond the algorithms, the book also explores the practice of using metric tensor and surface curvatures for generating anisotropic meshes on parametric space. It presents results from research including 3D anisotropic meshing, mesh generation over unbounded domains, meshing by means of intersection, re-meshing by Delaunay-ADF approach, mesh refinement and optimization, generation of hexahedral meshes, and large scale and parallel meshing, along with innovative unpublished meshing methods. The author provides illustrations of major meshing algorithms, pseudo codes, and programming codes in C++ or FORTRAN. Geared toward research centers, universities, and engineering companies, Finite Element Mesh Generation describes mesh generation methods and fundamental techniques, and also serves as a valuable reference for laymen and experts alike.
Procedure for Tooth Contact Analysis of a Face Gear Meshing with a Spur Gear Using Finite Element Analysis
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781720666325
Category :
Languages : en
Pages : 30
Book Description
A procedure was developed to perform tooth contact analysis between a face gear meshing with a spur pinion using finite element analysis. The face gear surface points from a previous analysis were used to create a connected tooth solid model without gaps or overlaps. The face gear surface points were used to create a five tooth face gear Patran model (with rim) using Patran PCL commands. These commands were saved in a series of session files suitable for Patran input. A four tooth spur gear that meshes with the face gear was designed and constructed with Patran PCL commands. These commands were also saved in a session files suitable for Patran input. The orientation of the spur gear required for meshing with the face gear was determined. The required rotations and translations are described and built into the session file for the spur gear. The Abaqus commands for three-dimensional meshing were determined and verified for a simplified model containing one spur tooth and one face gear tooth. The boundary conditions, loads, and weak spring constraints were determined to make the simplified model work. The load steps and load increments to establish contact and obtain a realistic load was determined for the simplified two tooth model. Contact patterns give some insight into required mesh density. Building the two gears in two different local coordinate systems and rotating the local coordinate systems was verified as an easy way to roll the gearset through mesh. Due to limitation of swap space, disk space and time constraints of the summer period, the larger model was not completed.Bibel, George and Lewicki, David G. (Technical Monitor)Glenn Research CenterROTATION; GEAR TEETH; BOUNDARY CONDITIONS; FINITE ELEMENT METHOD; TIME; COMPUTER PROGRAMS; LOADS (FORCES)
The Development of a Finite Element Mesh Generator for Helical Gear Teeth
Author: David SellPublisher:
ISBN:
Category : Gearing, Spur
Languages : en
Pages : 212
Book Description
Manual for Automatic Generation of Finite Element Models of Spiral Bevel Gears in Mesh
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781722627560
Category :
Languages : en
Pages : 58
Book Description
The goal of this research is to develop computer programs that generate finite element models suitable for doing 3D contact analysis of faced milled spiral bevel gears in mesh. A pinion tooth and a gear tooth are created and put in mesh. There are two programs: Points.f and Pat.f to perform the analysis. Points.f is based on the equation of meshing for spiral bevel gears. It uses machine tool settings to solve for an N x M mesh of points on the four surfaces, pinion concave and convex, and gear concave and convex. Points.f creates the file POINTS.OUT, an ASCI file containing N x M points for each surface. (N is the number of node points along the length of the tooth, and M is nodes along the height.) Pat.f reads POINTS.OUT and creates the file tl.out. Tl.out is a series of PATRAN input commands. In addition to the mesh density on the tooth face, additional user specified variables are the number of finite elements through the thickness, and the number of finite elements along the tooth full fillet. A full fillet is assumed to exist for both the pinion and gear. Bibel, G. D. and Reddy, S. and Kumar, A. Unspecified Center...
Automatic Finite Element Mesh Generation from 3-D Solid Models
Author: 洪建益Publisher:
ISBN: 9781374774209
Category :
Languages : en
Pages :
Book Description
This dissertation, "Automatic Finite Element Mesh Generation From 3-D Solid Models" by 洪建益, Kin-yik, Hung, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. DOI: 10.5353/th_b3123258 Subjects: Geometrical models Finite element method
An Approach to Fully Automatic Finite Element Mesh Generation for Arbitrarily Shaped 3-dimensional Domains
Author: Charles T. KenyonPublisher:
ISBN:
Category : Finite element method
Languages : en
Pages : 240
Book Description