Comparative Evaluation of Finite Element Models and Types of Analyses for a Bolted Joint

2005 ◽  
Vol 127 (6) ◽  
pp. 1207-1210
Author(s):  
R. Padmaja ◽  
R. Ravinder Rao ◽  
B. Kotiveerachari ◽  
P. B. Godbole
Keyword(s):  
Finite Element ◽  
Comparative Evaluation ◽  
Three Dimensional ◽  
Finite Element Models ◽  
Essential Difference ◽  
Bolted Joint ◽  
The Finite Element Method ◽  
Three Dimensional Models ◽  
Parametric Programs ◽  
Line Elements

The present work is aimed at evaluating different ways in which a given joint can be analyzed using the Finite Element Method. The bolt is modeled using line elements (link) or area elements (continuum) and a comparative evaluation is carried out. Each of these types is further subdivided into three categories viz., plane stress, axisymmetric, and three-dimensional models. Thus a total of six models are proposed to be analyzed and compared. As the bolt shares only a small fraction of external load in a well-tightened joint, the relative flexibility of a bracket is also studied as an example in the present work. Comparing the results of these analyses it was found that the type of model used for the bolt is more important than the type of analysis. This aspect is probed further to find the essential difference between bolt as link and bolt as continuum. The analysis is carried out using ANSYS, which enables writing many parametric programs.

Investigation into the Effect of the Nut Thread Run-Out on the Stress Distribution in a Bolt Using the Finite Element Method

2003 ◽  
Vol 125 (3) ◽  
pp. 527-532 ◽  
Author(s):  
J. W. Hobbs ◽  
R. L. Burguete ◽  
E. A. Patterson
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Distribution ◽  
Three Dimensional ◽  
Element Model ◽  
Two Dimensional ◽  
The Finite Element Method ◽  
Element Analysis ◽  
Dimensional Models ◽  
Three Dimensional Models

By means of comparing results from finite element analysis and photoelasticity, the salient characteristics of a finite element model of a nut and bolt have been established. A number of two-dimensional and three-dimensional models were created with varying levels of complexity, and the results were compared with photoelastic results. It was found that both two-dimensional and three-dimensional models could produce accurate results provided the nut thread run-out and friction were modeled accurately. When using two-dimensional models, a number of models representing different positions around the helix of the thread were created to obtain more data for the stress distribution. This approach was found to work well and to be economical.

Structural Analysis

2017 ◽  
pp. 124-219
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Structural Analysis ◽  
Numerical Methods ◽  
Three Dimensional ◽  
Wind Engineering ◽  
The Finite Element Method ◽  
Material Models ◽  
Three Dimensional Models ◽  
Base Connections

This chapter develops the components required for successful modelling of temporary structures. It presents the principles, methods and the associated limitations that currently are seen as the state-of-the-art in structural analysis using the Finite Element Method. Material models of steel, aluminium and bamboo are presented with an emphasis on linear and multilinear models for steel and the Ramberg-Osgood model for aluminium. Models are presented for braces, props, beam-to-column connections, top connections, base connections and column-to-column connections based on the latest theoretical and experimental procedures developed by the authors and co-workers. Examples of two and three dimensional models are then developed for access scaffolds, bridge falsework and bamboo scaffolds. Finally, the chapter presents information on the effects of ground modelling and on advanced wind engineering using complex numerical methods.

Optimal Design of Conductor Clamps Based on Abaqus

2014 ◽  
Vol 915-916 ◽  
pp. 244-247
Author(s):  
Kai Liu ◽  
Ming Jiang ◽  
Fei Peng
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Optimal Design ◽  
Field Test ◽  
Three Dimensional ◽  
Element Model ◽  
Finite Element Models ◽  
Element Analysis ◽  
Optimal Target ◽  
Three Dimensional Models

Three dimensional models and finite element models of conductor clamps are built in software Solidworks and Abaqus. Different forces are loaded on finite element model of conductor clamps to obtain distributions of stress and displacement. Optimal design of conductor clamps is performed with finite element analysis and field test data. The results show that optimal design scheme achieves optimal target.

scholarly journals LOCAL CONTROL OF SOUND IN STOCHASTIC DOMAINS BASED ON FINITE ELEMENT MODELS

2011 ◽  
Vol 19 (02) ◽  
pp. 205-219 ◽  
Author(s):  
TUOMAS AIRAKSINEN ◽  
ERKKI HEIKKOLA ◽  
JARI TOIVANEN
Keyword(s):  
Finite Element ◽  
Local Control ◽  
Noise Control ◽  
Three Dimensional ◽  
Least Square ◽  
Finite Element Models ◽  
The Finite Element Method ◽  
Quadratic Optimization Problem ◽  
Acoustic Space ◽  
Silent Region

A numerical method for optimizing the local control of sound in a stochastic domain is developed. A three-dimensional enclosed acoustic space, for example, a cabin with acoustic actuators in given locations is modeled using the finite element method in the frequency domain. The optimal local noise control signals minimizing the least square of the pressure field in the silent region are given by the solution of a quadratic optimization problem. The developed method computes a robust local noise control in the presence of randomly varying parameters such as variations in the acoustic space. Numerical examples consider the noise experienced by a vehicle driver with a varying posture. In a model problem, a significant noise reduction is demonstrated at lower frequencies.

Finite Element Analysis and Stress Testing for Telescopic Boom of Telehandler

2013 ◽  
Vol 321-324 ◽  
pp. 1757-1760 ◽  
Author(s):  
Hong Feng Yan ◽  
Wei Ping Wang ◽  
Zhi Wang ◽  
Hui Xian Zhang ◽  
Hui Zhang ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Testing ◽  
Three Dimensional ◽  
Reference Value ◽  
The Finite Element Method ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Three Dimensional Models ◽  
Analysis Models

The papaer is to study telescopic boom material handler, carried out forces analysis on a typical three section telescopic boom, results indicated that the boom working in horizontal position is the most dangerous situation, Adopted the CAD software of SolidWorks to build the three dimensional models of telescopic boom, then used the FEA component of SolidWorks Simulation to carried out finite element analysis(FEA) respectively for three sections of boom, obtained FEA results. By the use of comparing the stress testing results with the finite element analysis results, certificated that the finite element analysis models are reasonable and the finite element method by Simulation is feasible and reliable. All of these works have very important reference value for designing and optimization of the telehandler in the future.

scholarly journals The integration of computer aided design and finite element analysis tools using a logic based approach

2002 ◽  
Author(s):  
◽  
Jason David De Beer
Keyword(s):  
Finite Element ◽  
Computer Aided Design ◽  
Three Dimensional ◽  
Finite Element Models ◽  
Element Analysis ◽  
Computer Aided ◽  
Virtual Prototypes ◽  
Three Dimensional Models ◽  
Aided Design ◽  
Analysis Models

Today's powerful computer-aided engineering (CAE) products have reached ground breaking levels of sophistication when compared with the almost archaic technology used by our predecessors. Engineers are able to develop complex three-dimensional models, or virtual prototypes, using powerful 3D modelling capabilities, and from these models, generate manufacturing drawings, motion analysis models, and even finite element models.

Comparison of Conventional and Pontic Fixed Partial Dentures Over Implants Using the Finite Element Method: Three-Dimensional Analysis of Cortical and Medullary Bone Stress

2020 ◽  
Vol 46 (3) ◽  
pp. 175-181
Author(s):  
Marcelo Bighetti Toniollo ◽  
Mikaelly dos Santos Sá ◽  
Fernanda Pereira Silva ◽  
Giselle Rodrigues Reis ◽  
Ana Paula Macedo ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Three Dimensional ◽  
The Finite Element Method ◽  
Medullary Bone ◽  
Principal Stresses ◽  
Bone Stress ◽  
Bone Damage ◽  
Rehabilitation System ◽  
Minimum Requirements

Rehabilitation with implant prostheses in posterior areas requires the maximum number of possible implants due to the greater masticatory load of the region. However, the necessary minimum requirements are not always present in full. This project analyzed the minimum principal stresses (TMiP, representative of the compressive stress) to the friable structures, specifically the vestibular face of the cortical bone and the vestibular and internal/lingual face of the medullary bone. The experimental groups were as follows: the regular splinted group (GR), with a conventional infrastructure on 3 regular-length Morse taper implants (4 × 11 mm); and the regular pontic group (GP), with a pontic infrastructure on 2 regular-length Morse taper implants (4 × 11 mm). The results showed that the TMiP of the cortical and medullary bones were greater for the GP in regions surrounding the implants (especially in the cervical and apical areas of the same region) but they did not reach bone damage levels, at least under the loads applied in this study. It was concluded that greater stress observed in the GP demonstrates greater fragility with this modality of rehabilitation; this should draw the professional's attention to possible biomechanical implications. Whenever possible, professionals should give preference to use of a greater number of implants in the rehabilitation system, with a focus on preserving the supporting tissue with the generation of less intense stresses.

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.

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