Finite element analysis on the biomechanical stability of open porous titanium scaffolds for large segmental bone defects under physiological load conditions

2013 ◽  
Vol 35 (4) ◽  
pp. 422-432 ◽  
Author(s):  
Jan Wieding ◽  
Robert Souffrant ◽  
Wolfram Mittelmeier ◽  
Rainer Bader
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bone Defects ◽  
Porous Titanium ◽  
Biomechanical Stability ◽  
Element Analysis ◽  
Physiological Load ◽  
Segmental Bone ◽  
Load Conditions ◽  
Segmental Bone Defects

scholarly journals Full regeneration of segmental bone defects using porous titanium implants loaded with BMP-2 containing fibrin gels

2015 ◽  
Vol 29 ◽  
pp. 141-154 ◽  
Author(s):  
J van der Stok ◽  
◽  
MKE Koolen ◽  
MPM de Maat ◽  
S Amin Yavari ◽  
...  
Keyword(s):  
Bone Defects ◽  
Porous Titanium ◽  
Titanium Implants ◽  
Fibrin Gels ◽  
Segmental Bone ◽  
Segmental Bone Defects

scholarly journals Thermal Stress Analysis of Process Piping System Installed on LNG Vessel Subject to Hull Design Loads

2020 ◽  
Vol 8 (11) ◽  
pp. 926
Author(s):  
Se-Yun Hwang ◽  
Min-Seok Kim ◽  
Jang-Hyun Lee
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Analysis ◽  
Evaluation Model ◽  
Element Model ◽  
Piping System ◽  
Wave Load ◽  
Element Analysis ◽  
Expansion Joints ◽  
Load Conditions

In this paper, the procedure for the strength evaluation of the piping system installed on liquefied natural gas (LNG) carriers is discussed. A procedure that accounts for the ship’s wave load and hull motion acceleration (as well as the deformation due to the thermal expansion and contraction experienced by the hull during seafaring operations) is presented. The load due to the temperature and self-weight of the piping installed on the deck is also considered. Various operating and load conditions of the LNG piping system are analyzed. Stress analysis is performed by combining various conditions of sustained, occasional, and expansion loads. Stress is assessed using finite element analysis based on beam elements that represent the behavior of the piping. The attributes of the piping system components (such as valves, expansion joints, and supports) are represented in the finite element model while CAESAR-II, a commercial software is used for finite element analysis. Component modeling, load assignment, and load combinations are presented to evaluate pipe stresses under various load conditions. An evaluation model is selected for the piping arrangement of LNG and the evaluated stress is compared with the allowable stress defined by the American Society of Mechanical Engineers (ASME).

Analysis of Losses and Thermal in Induction Motors

2013 ◽  
Vol 446-447 ◽  
pp. 503-508
Author(s):  
Xiao Feng Ding ◽  
Hui Chang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Pulse Width ◽  
Induction Motors ◽  
Thermal Characteristics ◽  
Sinusoidal Voltage ◽  
Element Analysis ◽  
Voltage Supply ◽  
Pulse Width Modulated ◽  
Load Conditions

This paper presents an investigation into the losses and thermal characteristics of induction motors operated from pulse width-modulated (PWM) voltage supply in comparison to that operated from sinusoidal voltage supply. It was concluded that due to the abundant harmonics in the PWM waveforms, significant losses are induced in the motor by the inverter supply. The temperature ascends correspondingly. Experiments were conducted with no load and with load conditions. The losses and thermal characteristics were calculated using finite element analysis (FEA) and validated by the experiments.

scholarly journals Numerical simulation of mechanically stimulated bone remodelling

2016 ◽  
Vol 2 (1) ◽  
pp. 643-647 ◽  
Author(s):  
Josephine Mauck ◽  
Jan Wieding ◽  
Daniel Kluess ◽  
Rainer Bader
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Clinical Practice ◽  
Computer Tomography ◽  
Bone Remodelling ◽  
Bone Defects ◽  
Element Analysis ◽  
Great Opportunity ◽  
Choice Of Therapy

AbstractThe numerical simulation of bone remodelling provides a great opportunity to improve the choice of therapy in particular for complex bone defects. Despite this fact, its use in clinical practice is not yet expedient because of several unresolved problems. In this paper a new bone remodelling algorithm based on standard computer tomography datasets and finite element analysis is introduced.

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