Selection of Railway Floor and Roof Panels Based on Finite Element Analysis

2014 ◽  
Author(s):  
J. Kwapisz
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Element Analysis ◽  
Selection Of

scholarly journals Optimisation of Coating Properties for Fibre Optic Smart Structures using Finite Element Analysis

1994 ◽  
Vol 3 (5) ◽  
pp. 096369359400300
Author(s):  
M. Hadjiprocopiou ◽  
G.T. Reed ◽  
L. Hollaway ◽  
A.M. Thorne
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Optical Fibre ◽  
Smart Material ◽  
Material System ◽  
Careful Selection ◽  
Coating Properties ◽  
Stress Concentrations ◽  
Element Analysis ◽  
Selection Of

Finite Element analysis is used to determine and to minimise the stress concentrations which arise in a “Smart” material system due to the embedded optical fibre sensors. The FE results show that with careful selection of the coating stiffness and thickness the stress concentrations caused by the fibre inclusion in the host material can be reduced.

Finite Element Analysis of Thermal Stress for Femoral Prosthesis

2013 ◽  
Vol 750-752 ◽  
pp. 2212-2215
Author(s):  
Mo Nan Wang
Keyword(s):  
Finite Element Method ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Coefficient Of Thermal Expansion ◽  
Physical Property ◽  
Prosthetic Material ◽  
Femoral Prosthesis ◽  
Interface Failure ◽  
Element Analysis ◽  
Selection Of

Based on the thermo elasticity theory, the stress of femur prosthesis system was analyzed using finite element method. An evaluation for the selection of prosthetic material was presented after discussing the thermo physical property of material which had an effect on the stress of femur prosthesis system. The results indicate that the interface failure is the primary failure form of the femoral prosthesis system and the interface failure is accelerated for the reason of the thermal effect. So the prosthesis with low coefficient of thermal expansion should be selected which can moderate the interface failure in the certain degree.

Reusability-based selection of parametric finite element analysis models

2009 ◽  
Vol 23 (2) ◽  
pp. 197-214
Author(s):  
Nsikan Udoyen ◽  
David W. Rosen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Adaptive Reuse ◽  
Element Analysis ◽  
Fea Modeling ◽  
New Information ◽  
Parametric Finite Element Analysis ◽  
Method Factors ◽  
Analysis Models ◽  
Selection Of

AbstractA selection method to support adaptive reuse of parametric finite element analysis (FEA) models is introduced in this paper. Adaptive reuse of engineering artifacts such as FEA models is common in product design, but difficult to automate because of the need to integrate new information. The proposed method factors reusability into selection by evaluating models based on comparative estimates of effort involved in adapting them for reuse to model a query problem. The method is developed for FEA models of component-based designs. FEA modeling of electronic chip packages is used to illustrate the method's usefulness. We conclude with a discussion on the method's advantages and limitations and highlight important issues for further research.

scholarly journals Design and parametric characterization of flexure bearing as automotive valve spring replacement

2019 ◽  
Vol 13 (1) ◽  
pp. 4704-4717
Author(s):  
Mohd Razali Hanipah ◽  
Shahin Mansor ◽  
M. R. M. Akramin ◽  
Akhtar Razul Razali
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cylinder Head ◽  
Maximum Stress ◽  
Combustion Engine ◽  
Element Analysis ◽  
Bearing Strength ◽  
Single Piece ◽  
Selection Of

Automotive valve springs occupy substantial space in the cylinder head of an internal combustion engine. In this paper, the design and analyses of a flat spring concept, known as flexure bearing are presented. Further, design approach, characteristics and parametric characterizations of a single-piece flexure bearing concept are outlined. Finite element analysis was used in examining the flexure bearing strength for different designs, materials and thicknesses. The results show that the maximum stress values are independent of the material types when the number of arm is three and above. The strain values are limited to less than 1% for all materials when the thickness is more than 1mm.  The results have provided characteristics for future selection of the flexure bearing in relation to the intended axial displacement.    

scholarly journals Comparison between finite element analysis and rheological models for chip formation

2020 ◽  
Vol 23 (2) ◽  
pp. 255-268
Author(s):  
Olga Liivapuu ◽  
Jüri Olt ◽  
Tanel Tärgla
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Numerical Methods ◽  
Chip Formation ◽  
Cutting Parameters ◽  
Finite Element Models ◽  
Empirical Methods ◽  
Element Analysis ◽  
Rheological Models ◽  
Selection Of

In the process of cutting, often the selection of cutting parameters is done considering empirical methods. This approach is more expensive and does not usually lead to the best solutions. Numerical methods for simulating the chip formation have been under development over the last thirty years. The aim of the present research is to compare models based on rheological properties of metals with 2D Finite Element Models of chip formation process.

Study on the Influence Factors of Honing Efficiency

2013 ◽  
Vol 655-657 ◽  
pp. 1204-1209
Author(s):  
Yong Gui Zhang ◽  
Jun Kai Niu ◽  
Yun Jiang Yang ◽  
Jun Gong
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Theoretical Basis ◽  
High Efficiency ◽  
Influence Factors ◽  
Matlab Simulation ◽  
Technological Parameters ◽  
Element Analysis ◽  
Selection Of

According to the requirements of optimization for honing efficiency ,Through Matlab simulation and finite element analysis, this paper studied the influence factors of reticulate pattern quality and honing efficiency. These factors contain honing speed, reversing acceleration, oil-stone. This paper provides certain theoretical basis for reasonable selection of key technological parameters in high efficiency honing process .

scholarly journals To Evaluate the Influence of Different Implant Thread Designs on Stress Distribution of Osseointegrated Implant: A Three-Dimensional Finite-Element Analysis Study–An In Vitro Study

2020 ◽  
Vol 08 (01) ◽  
pp. 09-16
Author(s):  
Chhavi Sharma ◽  
Tarun Kalra ◽  
Manjit Kumar ◽  
Ajay Bansal ◽  
Anupreet Kaur Chawla
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Axial Load ◽  
Three Dimensional ◽  
Von Mises Stress ◽  
Element Analysis ◽  
Osseointegrated Implant ◽  
Implant Therapy ◽  
Von Mises ◽  
Selection Of

Abstract Introduction Dental implants are common treatment modality for tooth loss which leads to unaesthetic appearance and may also cause deterioration of mastication and speech. The aim of implant therapy in dentistry is to restore tissue contour, function, comfort, aesthetic, and speech. Dental implant role is to transfer the mechanical force created during chewing to the supporting osseous tissues within the mandible and maxilla. The importance of biomechanical factors such as the bone-implant interface, implant thread design, the length and diameter of implants, type of loading, the quality and quantity of surrounding bone have been strained by various authors. The selection of implant thread design plays an important role in the outcome of the treatment. This study was done to evaluate the influence of different thread designs on stress distribution of osseointegrated implant using three-dimensional (3D) finite-element analysis. Materials and Methods Three implants with different thread designs, namely V-thread, buttress, and reverse buttress thread designs were considered and dimensions were standardized. The site considered was the mandibular molar region with cortical and cancellous bone assuming to be isotropic and homogeneous. The implant modeling was done with the ANSYS 18.1 software. Axial load (100N) and buccolingual load (50N) were applied. The stresses were calculated as Von Mises stress criterion. Results Minimum von mises Stress concentration was seen for tapered implant body with reverse buttress thread design under axial load 100N and tapered implant body with V-thread under buccolingual load of 50N at cortical bone which signifies bone preservation. Stress levels were observed maximum at implant and minimum at the cancellous bone. Conclusion Hence, within the limitations of this study the results obtained can be applied clinically for appropriate selection of implant thread design for a predictable success of implant therapy.

A High-Accuracy Approach to Finite Element Analysis Using the Hexa 27-Node Element

2016 ◽  
Author(s):  
Pedro V. Marcal ◽  
Jeffrey T. Fong ◽  
Robert Rainsberger ◽  
Li Ma
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Truncation Error ◽  
Shell Element ◽  
Pressure Vessels ◽  
Element Formulation ◽  
Element Analysis ◽  
Brick Element ◽  
Similar Solutions ◽  
Selection Of

In most finite-element-analysis codes, accuracy is achieved through the use of the hexahedron hexa-20 elements (a node at each of the 8 corners and 12 edges of a brick element). Unfortunately, without an additional node in the center of each of the element’s 6 faces, nor in the center of the hexa, the hexa-20 elements are not fully quadratic such that its truncation error remains at h2(0), the same as the error of a hexa-8 element formulation. To achieve an accuracy with a truncation error of h3(0), we need the fully-quadratic hexa-27 formulation. A competitor of the hexa-27 element in the early days was the so-called serendipity cubic hexa-32 solid elements (see Ahmad, Irons, and Zienkiewicz, Int. J. Numer. Methods in Eng., 2:419–451 (1970) [1]). The hexa-32 elements, unfortunately, also suffer from the same lack of accuracy syndrome as the hexa20’s. In this paper, we investigate the accuracy of various elements described in the literature including the fully quadratic hexa-27 elements to a shell problem of interest to the pressure vessels and piping community, viz. the shell-element-based analysis of a barrel vault. Significance of the highly accurate hexa-27 formulation and a comparison of its results with similar solutions using ABAQUS hexa-8, and hexa-20 elements, are presented and discussed. Guidelines are proposed for selection of better elements.

Product Based Material Testing for Hyperelastic Suspension Jounce Bumper Design with FEA

2010 ◽  
Vol 450 ◽  
pp. 119-123 ◽  
Author(s):  
Kemal Çalışkan ◽  
Erhan Ilhan Konukseven (1) ◽  
Y. Samim Ünlüsoy
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Material Model ◽  
Material Testing ◽  
Critical Examination ◽  
Element Analysis ◽  
Hyperelastic Materials ◽  
Testing Procedures ◽  
The Finite Element Analysis ◽  
Selection Of

The basic problem in the finite element analysis of parts made of hyperelastic materials is the identification of mathematical material model coefficients. Furthermore, selection of a suitable mathematical hyperelastic material model may not be straightforward. In this study, a systematic design methodology is presented for hyperelastic suspension jounce bumpers. The presented methodology involves a critical examination of material testing procedures, material model selection, and coefficient identification. The identified material model coefficients are verified through comparison of the finite element analysis results with actual tests.

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