Comparison of CAD-CAM and traditional chairside processing of 4-unit interim prostheses with and without cantilevers: Mechanics, fracture behavior, and finite element analysis

2021 ◽  
Author(s):  
Carolina Coelho ◽  
Catarina Calamote ◽  
António Correia Pinto ◽  
José L. Esteves ◽  
António Ramos ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fracture Behavior ◽  
Element Analysis ◽  
Cad Cam

Finite Element Analysis on Fracture Behavior of the interface crack with plastic deformation

2000 ◽  
Vol 2000.1 (0) ◽  
pp. 187-188
Author(s):  
Masaki OMIYA ◽  
Keisuke SUZUKI ◽  
Hirotsugu INOUE ◽  
Kikuo KISHIMOTO ◽  
Toshikazu SHIBUYA
Keyword(s):  
Finite Element Analysis ◽  
Plastic Deformation ◽  
Finite Element ◽  
Interface Crack ◽  
Fracture Behavior ◽  
Element Analysis

Evaluation of Fracture Behavior for Pressurized T-Pipe by Finite Element Analysis

2012 ◽  
Author(s):  
Naoki Miura ◽  
Katsuhiko Yamakami ◽  
Kotaro Iwahara ◽  
Kiyoharu Tsunokawa ◽  
Kozo Miyao
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Tensile Property ◽  
Fracture Behavior ◽  
Welded Joint ◽  
Three Dimensional ◽  
Element Analysis ◽  
Wall Thinning ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

T-pipe is one of the typical structural elements of LWR piping as well as T-joint. In the present situation, the evaluation of wall thinning for T-pipe is accomplished by assuring the sufficient strength around the opening area by using the design and construction code. This evaluation often assumes the replacement of a local wall thinning with a global wall thinning, which leads to excessively conservative prediction of burst pressures. In this study, three-dimensional finite element analysis was conducted to simulate the fracture behavior of a pressurized T-pipe test. The accuracy of the predicted burst pressures and appropriate modeling of the welded joint at the junction of the main and branch pipes were investigated. It was found that the burst pressure could be adequately predicted by applying a proper fracture criterion. Allocation of experimental tensile property of weld metal to the welded joint gave more accurate prediction; nevertheless, allocation of experimental tensile property of base metal to the welded joint enabled suitably conservative prediction.

Three-Dimensional Finite Element Analysis of Custom-Made Ceramic Dowel Made Using CAD/CAM Technology

2012 ◽  
Vol 21 (6) ◽  
pp. 440-450 ◽  
Author(s):  
Thamer Yousif Marghalani ◽  
Mohamed Tharwat Hamed ◽  
Mohamed Abdelmageed Awad ◽  
Ghada Hussein Naguib ◽  
Ahmed Fouad Elragi
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Analysis ◽  
Custom Made ◽  
Dimensional Finite Element ◽  
Cad Cam ◽  
Three Dimensional Finite Element

Towards a Symbolic Math CAD/CAM System

1993 ◽  
Author(s):  
Tom Trias ◽  
Myo Kyaw ◽  
Darren Thompson ◽  
Laurence Leff ◽  
Z. Malik
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Engineering Design ◽  
Constructive Solid Geometry ◽  
Regular Grid ◽  
Element Analysis ◽  
Solid Geometry ◽  
The Finite Element Analysis ◽  
Cad Cam ◽  
Analysis System

Abstract We have written two pieces of software that are necessary for mechanical engineering design and analysis. These are a CAD-CAM system using Constructive Solid Geometry and a finite element analysis system. Both are unique in that they are written in the symbolic math system MAPLE. All entities in each of these programs are entered symbolically. For example, in the CSG system, we talk about a square whose dimensions are a, b and side1. In the finite element analysis, we talk about a symbolic representation for a regular grid. This scheme has advantages over conventional finite element analysis and Constructive Solid Geometry approaches.

scholarly journals Influence of Number of Implants and Attachment Type on Stress Distribution in Mandibular Implant-Retained Overdentures: Finite Element Analysis

2017 ◽  
Vol 5 (2) ◽  
pp. 244-249 ◽  
Author(s):  
Mohamed I. El-Anwar ◽  
Eman A. El-Taftazany ◽  
Hamdy A. Hamed ◽  
Mohamed A. Abd ElHay
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Finite Element Models ◽  
Oblique Angle ◽  
Element Analysis ◽  
3D Finite Element ◽  
Cad Cam ◽  
The Right ◽  
Molar Region

AIM: This study aimed to compare the stresses generated by using two or four root form dental implants supporting mandibular overdentures that were retained with ball and locator attachments.METHODS: Under ANSYS environment, four 3D finite element models were prepared. These models simulated complete overdentures supported by two or four implants with either ball or locator attachments as a connection mechanism. The models’ components were created by CAD/CAM package then were imported to ANSYS. Load of 100 N was applied at the right premolar/molar region vertically and at an oblique angle of 110° from lingual direction.RESULTS: Within the conditions of this research, in all cases, it was found that cortical and cancellous bone regions were the least to be stressed. Also, the ball attachment produced higher stresses.CONCLUSION: Caps deformation and stresses are negligible in cases of using locator attachment in comparison to ball attachments. This may indicate longer lifetime and less repair/maintenance operations in implant overdentures retained by locator attachments. Although the study revealed that bone was insensitive to a number of implants or attachment type, it may be recommended to use two implants in the canine region than using four, where the locator attachments were found to be better.

Research on Simulation of Cutting Process Based on the Finite Element Analysis Method

2013 ◽  
Vol 631-632 ◽  
pp. 686-690
Author(s):  
Yi Li Shen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
New Technologies ◽  
Cutting Process ◽  
Analysis Method ◽  
Organizational Models ◽  
Element Analysis ◽  
Finite Element Analysis Method ◽  
The Finite Element Analysis ◽  
Cad Cam

With the rapid penetration of information technology in various fields, CAD/CAM/CAE technology has been widely used to fundamentally change the traditional design, production, organizational models, it also has a very important significance to promote the technological transformation of existing enterprises, bring the whole structural change of the night, develop the new technologies and the promotion of economic growth. The paper uses the blades of steam turbine as an example, combined with the finite element analysis method to study the whole cutting process, the whole process was simulated and the results of error were had analysis and optimization.

scholarly journals Measuring the shape and volume of an above-knee stump

1988 ◽  
Vol 12 (3) ◽  
pp. 136-142 ◽  
Author(s):  
T. A. Krouskop ◽  
D. Dougherty ◽  
M. I. Yalcinkaya ◽  
A. Muilenberg
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Design Criteria ◽  
Probe Type ◽  
Element Analysis ◽  
Sensing System ◽  
Cad Cam ◽  
Shape Sensing ◽  
Mechanical Probe ◽  
External Shape

A set of design criteria for sensing the shape of an above-knee (AK) stump is presented and used as the basis for evaluating various shape sensing technologies. A mechanical probe type shape sensing system is described and its use in quantifying the external shape of the AK stump is discussed as it relates to generating a grid for finite element analysis in CAD/CAM studies and comparing the segmental volumes of the loaded and unloaded stump. This study also discusses a method that uses circumferential measurements to compute total and incremental volumes of the stump.

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