On the Stiefel-Baumgarte stabilization procedure

1979 ◽  
Vol 30 (2) ◽  
pp. 272-291 ◽  
Author(s):  
Urs Kirchgraber
Keyword(s):  
Stabilization Procedure ◽  
Baumgarte Stabilization

Talar Anchor Placement for Modified Brostrom Lateral Ankle Stabilization Procedure

2008 ◽  
Vol 98 (6) ◽  
pp. 473-476 ◽  
Author(s):  
Arush K. Angirasa ◽  
Michael J. Barrett
Keyword(s):  
Research Study ◽  
Ankle Instability ◽  
Suture Technique ◽  
Anatomic Reconstruction ◽  
Ankle Ligaments ◽  
Lateral Ankle ◽  
Lateral Ankle Instability ◽  
Stabilization Procedure ◽  
Lateral Ankle Ligaments ◽  
Modified Broström Procedure

The modified Brostrom procedure has been a proven procedure with excellent utility in the treatment of lateral ankle instability within limitation. Multiple variations of the original technique have been described in the literature to date. Included in these variations are differences in anchor placement, suture technique, or both. In this research study, we propose placing a bone screw anchor into the lateral shoulder of the talus rather than the typical placement at the lateral malleolus for anatomic reconstruction of the lateral ankle ligaments. (J Am Podiatr Med Assoc 98(6): 473–476, 2008)

A combined bony and soft-tissue tarsal stabilization procedure (Grice-Schede) for hindfoot valgus in children with cerebral palsy

1994 ◽  
Vol 113 (5) ◽  
pp. 237-243 ◽  
Author(s):  
J. Hamel ◽  
C. Kissling ◽  
B. Heimkes ◽  
S. Stotz
Keyword(s):  
Cerebral Palsy ◽  
Soft Tissue ◽  
Children With Cerebral Palsy ◽  
Stabilization Procedure

Locking and Stability of 3D Woven Composite Reinforcements

2014 ◽  
Vol 611-612 ◽  
pp. 292-299 ◽  
Author(s):  
Sylvain Mathieu ◽  
Philippe Boisse ◽  
Nahiene Hamila ◽  
Florent Bouillon
Keyword(s):  
Finite Element ◽  
Strain Energy ◽  
Constitutive Law ◽  
Element Formulation ◽  
Woven Composite ◽  
Anisotropic Behavior ◽  
Stabilization Procedure ◽  
Bias Extension ◽  
Deformation Modes ◽  
Composite Reinforcements

3D woven composite reinforcements preforming simulations are an unavoidable step of composite part processing. The present paper deals with thick composite fabric behavior modelling and issues arising during the numerical simulation of preforming. After the description of the independent deformation modes of initially orthotropic reinforcements, a physically motivated and invariant based hyperelastic strain energy density is introduced. This constitutive law is used to show the limitations of a classical finite element formulation in 3D fabric simulations. Tension locking is highlighted in bias extension tests and a reduced integration hexahedral finite element with specific physical hourglass stabilization is proposed. Instabilities due to the highly anisotropic behavior law, witnessed in bending dominated situations, are exposed and a stabilization procedure is initiated.

scholarly journals The observation of successful reconstructive-stabilization procedure for compression-distraction fracture-dislocation ThIII vertebra

2008 ◽  
Vol 0 (4) ◽  
pp. 72-74
Author(s):  
O. Yu. Leontyev ◽  
Yu. O. Leontyev ◽  
V. F. Pererva ◽  
M. O. Pritula
Keyword(s):  
Fracture Dislocation ◽  
Stabilization Procedure

scholarly journals Chaos phenomenon and stability analysis of RU-RPR parallel mechanism with clearance and friction

2018 ◽  
Vol 10 (1) ◽  
pp. 168781401774625 ◽  
Author(s):  
Yulei Hou ◽  
Yi Wang ◽  
Guoning Jing ◽  
Yunjiao Deng ◽  
Daxing Zeng ◽  
...  
Keyword(s):  
Friction Coefficient ◽  
Contact Force ◽  
Parallel Mechanism ◽  
Degrees Of Freedom ◽  
Force Model ◽  
Obvious Effect ◽  
Normal Contact ◽  
Rotational Degrees Of Freedom ◽  
The Stability ◽  
Baumgarte Stabilization

The chaos phenomenon often exists in the dynamics system of the mechanism with clearance and friction, which has obvious effect on the stability of the mechanism, then it is worthy of attention for identifying the relationship between the friction coefficient and the stability of the mechanism. Two rotational degrees of freedom decoupled parallel mechanism RU-RPR is taken as the research object. Considering the clearance existing in the revolute pair, Lankarani–Nikravesh contact force model is used to calculate the normal contact force, and the Coulomb friction force model is used to calculate the tangential contact force. The dynamics model is established using Newton–Euler equations, and the Baumgarte stabilization method is used to keep the stability of the numerical analysis. Then, the equations are solved using the fourth adaptive Runge–Kutta method, and the effect of the revolute pair’s clearance on the dynamic behavior is analyzed. Poincare mapping is plotted, and the bifurcation diagrams are analyzed with varying the friction coefficient corresponding to different values of clearance size. The research contents possess a certain theoretical guidance significance and practical application value on the analysis of the chaotic motion and its stability in the dynamics of the parallel mechanism.

A Two-Stage Stabilization Procedure for Correction of Calcaneocavus

1956 ◽  
Vol 38 (6) ◽  
pp. 1247-1264 ◽  
Author(s):  
George E. Scheer ◽  
C. H. Crego
Keyword(s):  
Two Stage ◽  
Stabilization Procedure

Aneurysm of the Posterior Tibial Artery After a Foot Stabilization Procedure

1966 ◽  
Vol 48 (2) ◽  
pp. 337-338 ◽  
Author(s):  
EDWARD MORRIS ◽  
THOMAS S. MORSE
Keyword(s):  
Posterior Tibial Artery ◽  
Posterior Tibial ◽  
Tibial Artery ◽  
Stabilization Procedure

Carbon Filament Growth on Fully Formulated Pd/Rh Automotive Catalysts

2000 ◽  
Vol 6 (S2) ◽  
pp. 66-67
Author(s):  
J.W. Hangas ◽  
G.W. Graham ◽  
R.W. McCabe ◽  
W. Chun
Keyword(s):  
Carbon Monoxide ◽  
Catalytic Activity ◽  
Operating Conditions ◽  
The Other ◽  
Carbon Filament ◽  
Automotive Catalysts ◽  
Exhaust Catalysts ◽  
Stabilization Procedure ◽  
Carbon Filaments ◽  
Aged Catalyst

Automotive exhaust catalysts are typically operated under stoichiometric conditions to minimize nitrogen oxide, hydrocarbon, and carbon monoxide pollutants. These catalysts do not form carbon filaments under normal operating conditions. In development of catalysts, however, a stabilization procedure is sometimes utilized on used catalysts (dynamometer or vehicle) to purge the catalyst of sulfur prior to measuring the catalytic activity in sweep and light-off testing. The stabilization procedure consists of running the catalyst under rich (excess fuel) conditions for 0.5hr. This study documents the existence of carbon filaments due to the stabilization procedure and discusses the effect of filaments on subsequent testing.Two separate catalysts were used in this study. The first was a 50,000 mile vehicle aged catalyst that had also been through the stabilization procedure and then sweep and light-off tested. The other was only dynamometer aged for 120hr at 850°C (1560°F).

Assumed strain stabilization procedure for the 9‐node Lagrange plane and plate elements

1987 ◽  
Vol 4 (3) ◽  
pp. 229-239 ◽  
Author(s):  
Bak Leong Wong ◽  
Ted Belytschko
Keyword(s):  
Plate Elements ◽  
Assumed Strain ◽  
Stabilization Procedure
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