Finite element analysis of the behaviour of microvoids in the cement mantle of cemented hip stem: Static and dynamic analysis

2010 ◽  
Vol 31 (1) ◽  
pp. 545-550 ◽  
Author(s):  
M.M. Bouziane ◽  
B. Bachir Bouiadjra ◽  
S. Benbarek ◽  
M.S.H. Tabeti ◽  
T. Achour
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Dynamic Analysis ◽  
Cement Mantle ◽  
Element Analysis ◽  
Static And Dynamic Analysis

Axisymmetric Finite Element Analysis of a Debonded Total Hip Stem With an Unsupported Distal Tip

1996 ◽  
Vol 118 (3) ◽  
pp. 399-404 ◽  
Author(s):  
T. L Norman ◽  
V. C. Saligrama ◽  
K. T. Hustosky ◽  
T. A. Gruen ◽  
J. D. Blaha
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Relaxation ◽  
Bone Cement ◽  
Cement Mantle ◽  
Load Level ◽  
Interface Conditions ◽  
Element Analysis ◽  
Cement Interface ◽  
Total Hip

A tapered femoral total hip stem with a debonded stem-cement interface and an unsupported distal tip subjected to constant axial load was evaluated using two-dimensional (2D) axisymmetric finite element analysis. The analysis was performed to test if the mechanical condition suggest that a “taper-lock” with a debonded viscoelastic bone cement might be an alternative approach to cement fixation of stem type cemented hip prosthesis. Effect of stem-cement interface conditions (bonded, debonded with and without friction) and viscoelastic response (creep and relaxation) of acrylic bone cement on cement mantle stresses and axial displacement of the stem was also investigated. Stem debonding with friction increased maximum cement von Mises stress by approximately 50 percent when compared to the bonded stem. Of the stress components in the cement mantle, radial stresses were compressive and hoop stresses were tensile and were indicative of mechanical taper-lock. Cement mantle stress, creep and stress relaxation and stem displacement increased with increasing load level and with decreasing stem-cement interface friction. Stress relaxation occur predominately in tensile hoop stress and decreased from 1 to 46 percent over the conditions considered. Stem displacement due to cement mantle creep ranged from 614 μm to 1.3 μm in 24 hours depending upon interface conditions and load level.

Finite Element Analysis of the Influence of Cement Viscosity on Cement Mantle in Total Knee Arthroplasty

2010 ◽  
Author(s):  
Eric Rohrs ◽  
Manish Paliwal ◽  
D. Gordon Allan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Cement Mantle ◽  
Flow Profile ◽  
Total Stress ◽  
Element Analysis ◽  
Total Knee ◽  
Sliding Distance

Aseptic loosening of the tibial implant is one of the major reasons of failure in Total Knee Arthroplasty (TKA). The cement viscosity at the time of application to the bone influences the cement penetration and stability of the prosthesis. Four cements of different viscosities and set times were selected for analysis (Simplex-P, DePuy-2, Palacos, and Endurance). Finite element analysis was used to model cement flow and cement mantle resulting from a surgically implanted tibial plate into sawbone open cell blocks simulating tibial cancellous bone (Pacific Research, WA). Frictional stress, pressure, sliding distance, and total stress at the bone-cement-stem interface were studied at the contact interfaces, which may contribute towards construct stability. Palacos had the maximum interface pressure, sliding distance, and total stress, while DePuy-2 displayed the lowest total stress and sliding distance at interface. Simulated flow profile correlated well with the cemented constructs’ radiographic profiles.

Finite Element Analysis for the Welding Column of CNC Boring Machine

2014 ◽  
Vol 852 ◽  
pp. 447-451
Author(s):  
Yan Fang Yue ◽  
Zhi Bo Xin ◽  
Jin Ye Wang
Keyword(s):  
Finite Element Method ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Dynamic Analysis ◽  
The Finite Element Method ◽  
Element Analysis ◽  
Construction Design ◽  
Inherent Frequency ◽  
Working Frequency ◽  
Loaded Column

The finite element method was applied in the construction design of the welding column of CNC boring machine for dynamic analysis and modal analysis. The laws of deformation and stress of a loaded column were obtained, and the natural frequency of each step and modes of column were also given according to this method. The results implied that the strength and the stiffness of welding column were met the machining requirements. Machine working frequency far less than inherent frequency, thus resonance is not easy to occur. Through the way, the optimization proposals of structure were given.

The Dynamic Analysis of the Twin-Lift Lattice Crane Truss

2013 ◽  
Vol 419 ◽  
pp. 38-42
Author(s):  
Lu Lu Lu ◽  
Yi Jui Chiu ◽  
Chia Hao Yang ◽  
Luh Maan Chang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Dynamic Analysis ◽  
Dynamic Behavior ◽  
Element Analysis ◽  
Dynamic Vibration ◽  
Vibration Behavior ◽  
Resonance Behavior

This paper aims to explore the dynamic behavior of the twin-lift lattice crane truss. The designs used ANSYS for finite element analysis. The situations of vibration and the resonance behavior of localization were dynamically analyzed. The results of this research could provide the engineers with useful information in understanding the dynamic vibration behavior of the crane system.

scholarly journals Finite Element Analysis of F1 Halo Safety Structure

2021 ◽  
Vol 9 (12) ◽  
pp. 1686-1689
Author(s):  
Manas Metar
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Dynamic Analysis ◽  
Modal Analysis ◽  
Static Analysis ◽  
Element Analysis ◽  
Permissible Levels

Abstract: The Federation Internationale de L’Autobile (FIA) has been working on improving safety of drivers in open wheel racing series. Numerous incidents caused serious impacts on drivers’ lives. The car-to-car collision, car to environment collision and injuries due to flying debris are common threats to these drivers. In 2016 the introduction of Halo surrounding the cockpit was appreciated by the FIA. The following study includes the analysis of this Halo system using Finite Element Analysis (FEA). The dynamic, static and modal analysis is carried out with the help of Simscale software and the results obtained showed the values under permissible levels. Keywords: Finite Element Analysis, Static Analysis, Modal Analysis, Dynamic Analysis, F1 Halo, FIA.

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