Spatial extension of a bone remodeling dynamics model and its finite element analysis

2020 ◽  
Author(s):  
Jacobo Baldonedo ◽  
José R. Fernández ◽  
Abraham Segade
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bone Remodeling ◽  
Dynamics Model ◽  
Element Analysis ◽  
Spatial Extension

Analysis on the Flutter Stability of Span Overpass

2012 ◽  
Vol 246-247 ◽  
pp. 532-536
Author(s):  
Yan Yang ◽  
Hu Yong Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Dynamics Model ◽  
Element Analysis ◽  
Large Span ◽  
Long Span ◽  
Technical Personnel ◽  
The Stability

The span overpass anti-flutter stability has been the focus of our study. Large span overpass in the running state of the wind and the load in line with the stability has been the concern and attention of the engineering and technical personnel. This paper establishes a flexible dynamics model through the use of long-span overpass line finite element analysis. Moreover, after the flutter stability of qualitative terms, we have a number of effective methods and measures to increase the flutter stability of the large-span overpass.

Stress-shielding induced bone remodeling in cementless shoulder resurfacing arthroplasty: a finite element analysis and in vivo results

2014 ◽  
Vol 47 (14) ◽  
pp. 3509-3516 ◽  
Author(s):  
F. Schmidutz ◽  
Y. Agarwal ◽  
P.E. Müller ◽  
B. Gueorguiev ◽  
R.G. Richards ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bone Remodeling ◽  
Stress Shielding ◽  
Element Analysis ◽  
Resurfacing Arthroplasty

scholarly journals Microdamage and Osteocyte-Lacuna Strain in Bone: A Microstructural Finite Element Analysis

1996 ◽  
Vol 118 (2) ◽  
pp. 240-246 ◽  
Author(s):  
P. J. Prendergast ◽  
R. Huiskes
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bone Remodeling ◽  
Damage Accumulation ◽  
Experimental Studies ◽  
Local Deformation ◽  
Element Analysis ◽  
Osteocyte Lacunae ◽  
Observed Damage ◽  
Living Tissues

Damage accumulation in living tissues occurs when the rate of damage formation is greater than the rate of damage repair. For very large increases in the loading rate of bones, this can result in “stress fractures” due to the growth and coalescence of fatigue related microdamage. At lower increases of loading rates, the damage accumulation process is halted because there is time for adaptive bone-remodeling to occur in response to the new load. However, it is not known if there is a relationship between microdamage and bone remodeling per se. One hypothesis for the control of bone remodeling is that osteocytes sense strains and mediate osteoblastic and osteoclastic activity. The purpose of this study was to investigate whether damage generates strains which may trigger bone remodeling. If this were true, then accumulative damage would cause adaptive bone remodeling. This study applies the methods of finite element analysis to determine the effect of observed damage mechanisms on the proposed sensors of remodeling in Haversian bone. Individual lamellae are modeled and osteocyte-lacunae are included in a generalized plane strain geometric representation. It is predicted that microdamage alters the local deformation behavior around lacunae, and that the changes increase as microdamage accumulates. Hence, if damage accumulates in a bone, it could be sensed as a change in strain at a microstructural level. The results give theoretical support to the experimental studies that have shown a correlation between microdamage and the initiation of resorption as a first step in bone remodeling.

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