scholarly journals Finite element method usage in determining pressure distribution of periodontal tissues on maxillary canine as result of orthodontic force

2011 ◽  
Vol 23 (2) ◽  
Author(s):  
E. Elih ◽  
Tono S. Hambali ◽  
Jono Salim ◽  
Endah Mardiati
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Pressure Distribution ◽  
Maximum Pressure ◽  
The Finite Element Method ◽  
Maxillary Canine ◽  
Cross Sectional ◽  
Orthodontic Force ◽  
Periodontal Tissues ◽  
Element Method

The purpose of this study is to obtain data of pressure distribution on canine periodontal tissues due to the orthodontic force generated by various types of motion using the Finite Element Method. The development of digital technology creates a numerical analysis for orthodontic treatment that can be done by performing 3-D reconstruction by scanning the maxillary canine teeth with a CT scan so that 255 cross-sectional images is obtained. 3 D model is then processed using the Finite Element Method to obtain the pressure distribution on the periodontal tissues caused by tipping movements, bodily, torque, roots, rotation, and extrusion. The analysis used was the analysis of qualitative and quantitative analysis. The results showed that the maximum pressure that occurs in the periodontal tissues caused by a variety of movements ranging from 3.3 x 10-3MPa to 2.9 x 10-2 MPa. This indicates that the force exerted on each movement produces maximum pressure that exceeds capillary pressure was 2 x 10-3 MPa.

DIRECT CURRENT RESISTIVITY MODELING FOR AXIALLY SYMMETRIC BODIES USING THE FINITE ELEMENT METHOD

Geophysics ◽  
1978 ◽  
Vol 43 (3) ◽  
pp. 550-562 ◽  
Author(s):  
H. M. Bibby
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Apparent Resistivity ◽  
Vertical Axis ◽  
Geothermal Field ◽  
Axially Symmetric ◽  
The Finite Element Method ◽  
Cross Sectional ◽  
Resistivity Anisotropy ◽  
Element Method

The finite element method is used to determine numerically the apparent resistivity anomaly caused by the presence of any body with a vertical axis of symmetry embedded in a uniform half‐space. The potential for a point source of current, and hence the apparent resistivity, is determined in the form of a Fourier series. The use of the finite element method enables certain classes of resistivity anisotropy to be modeled. Several examples of bipole‐dipole apparent resistivity enable us to examine assumptions that are necessarily made when inhomogeneities are approximated by models for which explicit solutions exist for the potential. An application to the Broadlands geothermal field suggests that the horizontal cross‐sectional area of the geothermal reservoir increases with depth, consistent with a decrease in the permeability with depth.

scholarly journals Analysis of pressure distribution in the foot using finite elements

2020 ◽  
Vol 14 (2) ◽  
pp. 197-200
Author(s):  
Carlos Alberto Costa ◽  
Vinicius Victorazzi Lain ◽  
Alexandre Leme Godoy-Santos ◽  
Victor Gonçalvez de Antoni ◽  
Paulo Roberto Linzmaier ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Pressure Distribution ◽  
The Finite Element Method ◽  
Level Of Evidence ◽  
Healthy Human ◽  
Element Analysis ◽  
Human Foot ◽  
Biomechanical Behavior ◽  
Element Method

The objective of this study is to evaluate the applicability of the finite element method to analyze pressure distribution in the healthy human foot. Images of a foot were captured using computed tomography and converted into a three-dimensional model, which was adjusted with the aid of CAD software. The model was imported into Abaqus software for finite element analysis, considering the different regions of the foot. Observations of displacement, stresses, and pressure distribution demonstrated a biomechanical behavior of the foot consistent with that reported in the existing literature, regarding the regions of peak plantar pressure. These findings demonstrate the feasibility of evaluating the physical and mechanical behavior of the human foot using the finite element method, and can serve as a reference for the study and manufacture of orthotic appliances, prosthetic devices, and insoles. Level of Evidence V; Prognostic Studies; Expert Opinion.

Characteristics Research of Aqueduct under FSI Dynamic Response

2013 ◽  
Vol 864-867 ◽  
pp. 2367-2370
Author(s):  
Feng Zhu ◽  
Ai Wu Cao ◽  
Geng Ying
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Dynamic Response ◽  
Pressure Distribution ◽  
Hydrodynamic Pressure ◽  
The Finite Element Method ◽  
Height Range ◽  
The Difference ◽  
Pressure Changes ◽  
Element Method

Maximum distribution of hydrodynamic pressure on the flume sidewall were studied in this paper based on the finite element method. It contains the difference comparison of theoretical and numerical formulas, rules of maximum hydrodynamic pressure distribution under regular and irregular incentives, and hydrodynamic pressure changes with different height of bracket below the aqueduct. Studies show that: In the 30m height range, with the rise of bracket, the hydrodynamic pressure grows linearly.

scholarly journals Research on the settlement of levee and the formation mechanism of pavement crack in heightening and thickening levee engineering

2021 ◽  
Vol 233 ◽  
pp. 03023
Author(s):  
Donghe Ma ◽  
Chun Tan ◽  
Xin Liu ◽  
Peng Wang ◽  
Songling Han
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Formation Mechanism ◽  
Additional Stress ◽  
The Finite Element Method ◽  
Cross Sectional ◽  
Significant Difference ◽  
The Cross ◽  
Element Method

In view of the heightening and thickening levee project which already built, the settlement and deformation on the top of the landside slope of levee and the cracks on the levee were investigated. The finite element method was used to simulated the settlement of the levee. The results show that after heightening and thickening, the thickness of the new filled soil is uneven in the cross-sectional direction of the levee, resulting in a significant difference in the distribution of additional stress and settlement. In addition, the top of the original levee has smaller deformation, while the newly filled levee has larger deformation, which causes uneven settlement on the top of the embankment. The presented results have guiding significance for the settlement and deformation prevention of levee project.

A Study on the Pressure Distribution along the Powder-Die Interfaces in Powdered Metal Compaction Process

2007 ◽  
Vol 340-341 ◽  
pp. 655-658 ◽  
Author(s):  
H.S. Koo ◽  
V.R. Jayasekera ◽  
K.H. Min ◽  
Jung Min Seo ◽  
Dong Hwan Jang ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Pressure Distribution ◽  
The Finite Element Method ◽  
Geometrical Condition ◽  
Powdered Metal ◽  
Asymmetric Behavior ◽  
Copper Powders ◽  
Moving Punch ◽  
Element Method

This paper is concerned with the pressure distribution along the die-powder interface in long parts. The pressure exerted on the interface at various points on the moving and stationary punch, and also on the sidewall of container was investigated by the finite element method. A plasticity theory describing asymmetric behavior of powdered metals in tension and compression was briefly summarized. The yield criterion applied to the sintered powdered metals had been modified for describing this asymmetric behavior. The material properties of copper powders under compaction were also briefly described for the completeness of the paper. The copper powders were selected as a model material in the present study. The main purpose of this study is to investigate the pressure distribution along the interface of tooling quantitatively by the finite element method so that the results could be applied usefully to the design of tooling, especially container design for powdered metal compaction. Geometrical condition for analysis was confined to the Class II components which is very long parts without steps. It was concluded from the simulation results that the pressure exerted on the moving punch increases sharply near the outer circumference of punch and the pressure on the sidewall decreases at a distance from moving punch to fixed punch. It was also seen from the simulation that the pressure on the stationary punch is not significantly built up and decreases toward outer periphery. These trends were seen amplified with severe frictional conditions imposed on the tooling and powder interface.

Effect of Modeling Assumptions in the Plantar Pressure Distribution of the Diabetic Foot Using the p-Version of the Finite Element Method

2004 ◽  
Author(s):  
Ricardo L. Actis ◽  
Liliana B. Ventura ◽  
Barna A. Szabo ◽  
Kirk E. Smith ◽  
Paul K. Commean ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Pressure Distribution ◽  
Research Group ◽  
Diabetic Foot ◽  
Plantar Pressure ◽  
The Finite Element Method ◽  
Human Foot ◽  
Plantar Pressure Distribution ◽  
Element Method

This paper summarizes the modeling work performed by our research group in the last year utilizing the p-version of the finite element method for the simulation of the mechanical behavior of the human foot in regard to the plantar pressure distribution during push-off.

Design of Variable Airship Mechanism Based on Finite Element Method

2013 ◽  
Vol 690-693 ◽  
pp. 1899-1902
Author(s):  
Zhi Yuang Xiao ◽  
Mu Qing Yang ◽  
Dong Li Ma ◽  
Zheng Neng Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Structural Design ◽  
Safety Margin ◽  
Research Direction ◽  
The Finite Element Method ◽  
Cross Sectional ◽  
Variation Mechanism ◽  
Important Research Direction ◽  
Element Method

Variable airship is an important research direction because it can overcome the difficulties in climbing phase caused by huge volume, and can also solve the problem of insufficient strength. The requirements of variation bring significant challenges for the airship structural design. In this paper, a radial variation mechanism was proposed based on an existing airship. The mechanism can achieve a continuous variation of the cross-sectional area from 100 to 7.2 percent. The airship structure was analyzed using the finite element method to make sure the airship has a high safety margin in various conditions.

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