scholarly journals New three-dimensional model based on finite element method of bone nanostructure: single TC molecule scale level

2017 ◽  
Vol 20 (6) ◽  
pp. 617-625 ◽  
Author(s):  
Tesnim Kraiem ◽  
Abdelwahed Barkaoui ◽  
Moez Chafra ◽  
Ridha Hambli ◽  
João Manuel R. S. Tavares
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Three Dimensional ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Scale Level ◽  
Model Based ◽  
Element Method

A Fluid-Structure Coupled Computational Framework for Fluid-Induced Failure and Fracture

2015 ◽  
Author(s):  
Patrick D. Lea ◽  
Charbel Farhat ◽  
Kevin G. Wang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Extended Finite Element Method ◽  
Three Dimensional ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Extended Finite Element ◽  
Computational Framework ◽  
Fluid Structure ◽  
Fracture Models

This work extends and generalizes a recently developed fluid-structure coupled computational framework to model and simulate fluid-induced failure and fracture. In particular, a novel surface representation approach is proposed to represent a fractured fluid-structure interface in the context of embedded boundary method. This approach is generic in the sense that it is applicable to many different computational fracture models and methods, including the element deletion (ED) technique and the extended finite element method (XFEM). Two three-dimensional model problems are presented to demonstrate the salient features of the computational framework, and to compare the performance of ED and XFEM in the context of fluid-induced failure and fracture.

scholarly journals A Coupled Sharp-Interface Immersed Boundary-Finite-Element Method for Flow-Structure Interaction With Application to Human Phonation

2010 ◽  
Vol 132 (11) ◽  
Author(s):  
X. Zheng ◽  
Q. Xue ◽  
R. Mittal ◽  
S. Beilamowicz
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Flow Structure ◽  
Three Dimensional ◽  
Vocal Folds ◽  
Sharp Interface ◽  
Immersed Boundary ◽  
Three Dimensional Model ◽  
Structure Interaction ◽  
Element Method

A new flow-structure interaction method is presented, which couples a sharp-interface immersed boundary method flow solver with a finite-element method based solid dynamics solver. The coupled method provides robust and high-fidelity solution for complex flow-structure interaction (FSI) problems such as those involving three-dimensional flow and viscoelastic solids. The FSI solver is used to simulate flow-induced vibrations of the vocal folds during phonation. Both two- and three-dimensional models have been examined and qualitative, as well as quantitative comparisons, have been made with established results in order to validate the solver. The solver is used to study the onset of phonation in a two-dimensional laryngeal model and the dynamics of the glottal jet in a three-dimensional model and results from these studies are also presented.

Design of Above-Knee Prosthesis: A Finite Element Stress Analysis

2015 ◽  
Vol 1125 ◽  
pp. 432-436 ◽  
Author(s):  
Sandro Mihradi ◽  
Calvindoro Zeus Abdiwijaya ◽  
Tatacipta Dirgantara ◽  
Andi Isra Mahyuddin
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Knee Prosthesis ◽  
Three Dimensional ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Strength Criteria ◽  
Finite Element Stress Analysis ◽  
Three Dimensional Models ◽  
Four Bar Linkage

In the present research, three-dimensional models of above-knee prosthesis, consist of socket, four-bar linkage knee, pylon and foot, are developed. These models have to fulfill criteria such as stability, ability to withstand up to 90 kg of bodyweight, ability to flex up to 130 degree, easy for maintenance, simple manufacturing process, affordable and yet reliable. As the first step of development, these models were evaluated using finite element method software to determine whether or not the design has fulfilled strength criteria. The results show that the last iteration of the three dimensional model of the knee prosthesis has satisfied the criteria.

Fatigue Analysis of Diesel Engine Connecting Rod Based on Finite Element Method

2010 ◽  
Vol 39 ◽  
pp. 550-554 ◽  
Author(s):  
Xin Fan ◽  
Mao Hui Pan ◽  
Cheng Song Zhang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Diesel Engine ◽  
Three Dimensional ◽  
Work Load ◽  
Connecting Rod ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
Body Contact ◽  
Element Method

Connecting rod fatigue in a certain type of diesel engine is analyzed by using finite element analysis method and the FEM software ANSYS. According the actual working conditions, the three-dimensional model with multi-body contact is established to simulate the contact between the connecting rod parts; By using APDL language programming, the work load on the connecting rod, calculated according all the link work loads, is applied to the connecting rod bearing and bushing through the oil film pressure distribution. By finite element method structural strength of the connecting rod was calculated, that can effectively guide the connecting rod design, which has been proved by practice.

Analysis of Step Interference Fit of the High Speed Motorized Spindle with Finite Element Method

2004 ◽  
Vol 471-472 ◽  
pp. 844-849 ◽  
Author(s):  
Ping Ma ◽  
Cheng Xiang Liao ◽  
M.L. Duan ◽  
J.K. Li ◽  
D.N. Li ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
High Speed ◽  
Three Dimensional ◽  
Internal Surface ◽  
Three Dimensional Model ◽  
Motorized Spindle ◽  
Interference Fit ◽  
Balance Accuracy ◽  
Element Method

Balance for high speed motorized spindle is most important, it will influence the dynamic behavior of the high speed machine tools. In this paper, the GD-IV high speed spindle is introduced. In order to improve its balance accuracy, the step interference fit is developed to connect the rotor and the shaft. The interference fitted assembly has been modeled theoretically, the analysis highlights that the tolerance of the interference fit consists of the static section and dynamic section, the static section is determined by the transmitting torque while the dynamic section is determined by the centrifugal force. The Calculation of interference fit for the GD-IV spindle shows that the dynamic section is about 4.5 times larger than the static. Furthermore, the three dimensional model of the step interference fit between the shaft and the rotor has also been built up with finite element method and the stress distribution on the mating surface has been calculated. The results show that the maximum stress occurring near the chamfer region of the internal surface of the rotor is up to 235 MPa lower than the permissible material stress 278 MPa, so that the design of the step interference fit is reliability and safety.

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