scholarly journals Biomechanical Evaluation of a Spinal Screw Fixation System by the Finite Element Method

2015 ◽  
Vol 33 (1) ◽  
pp. 318-326
Author(s):  
Ana Paula Macedo ◽  
João Paulo Mardegan Issa ◽  
Helton Luiz Aparecido Defino ◽  
Antonio Carlos Shimano
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Screw Fixation ◽  
The Finite Element Method ◽  
Biomechanical Evaluation ◽  
Fixation System ◽  
Element Method

CALCULATION OF THE NATURAL FREQUENCY OF VIBRATION OF AN ORTHOPEDIC SCREW IN CANCELLOUS BONE OF VARIOUS ORIENTATIONS USING THE FINITE ELEMENT METHOD

2002 ◽  
Vol 02 (01) ◽  
pp. 67-79 ◽  
Author(s):  
K. R. WILLIAMS ◽  
F. A. YOUNG
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Natural Frequency ◽  
Cancellous Bone ◽  
Screw Fixation ◽  
Clinical Problem ◽  
The Finite Element Method ◽  
Simple Description ◽  
Natural Frequency Analysis ◽  
Element Method

The assessment of the stability of implants in cancellous bone remains a clinical problem. It has been shown that orthopaedic screw fixation depends on the microstructure and orientation of the trabeculae. In the current study we have investigated the possibility of using natural frequency analysis as a means of ranking screw fixation in cancellous bone. A dynamic modal analysis has been completed using the finite element method as a means of measuring implant frequency in a simple description of cancellous bone. A range of impulse excitation values have been examined which lead to implant resonance in different cancellous bone architectures. These values are reported in order that the eventual provision of a clinical diagnostic tool may correctly assess frequency values from the applied impulse.

Simulation of tuning graphene plasmonic behaviors by ferroelectric domains for self-driven infrared photodetector applications

Nanoscale ◽  
2019 ◽  
Vol 11 (43) ◽  
pp. 20868-20875 ◽  
Author(s):  
Junxiong Guo ◽  
Yu Liu ◽  
Yuan Lin ◽  
Yu Tian ◽  
Jinxing Zhang ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Interfacial Effect ◽  
Infrared Photodetector ◽  
The Finite Element Method ◽  
Ferroelectric Domains ◽  
Element Method

We propose a graphene plasmonic infrared photodetector tuned by ferroelectric domains and investigate the interfacial effect using the finite element method.

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