scholarly journals Patellofemoral instability in trochleodysplastic knee joints and the quantitative influence of simulated trochleoplasty – A finite element simulation

2020 ◽  
pp. 105216
Author(s):  
Dominik Kaiser ◽  
Linus Trummler ◽  
Tobias Götschi ◽  
Felix W.A. Waibel ◽  
Jess G. Snedeker ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Patellofemoral Instability ◽  
Knee Joints ◽  
Element Simulation ◽  
Quantitative Influence

Service Life Study of the Artificial Knee-Joints of Crossed Pairing

2013 ◽  
Vol 655-657 ◽  
pp. 1963-1967
Author(s):  
Li Liu ◽  
Lin Wei ◽  
Meng Yu
Keyword(s):  
Finite Element ◽  
Service Life ◽  
Knee Joint ◽  
Finite Element Simulation ◽  
Contact Analysis ◽  
Knee Joints ◽  
Design Calculation ◽  
Life Study ◽  
Element Simulation ◽  
Maximal Contact

The stress relationship between the artifical knee-joints of the same pairing and crossed pairing was studied by the contrastive contact analysis of finite element simulation in different angles and conditions. The service lives of the artifical knee-joints of different pairing were studied based on the above result and Archard wear design calculation theory to expand the application of existing artificial knee-joints. The result shows that, the maximal contact stresses of the artifical knee-joints of crossed pairing are more than those of the artifical knee-joints of the same pairing, and the more different pairing types are, the more obvious stress growths are. The service life of the artifical knee-joint of 3/3 pairing is 28.42 years, and the service lives of 3/2.5 pairing and 3/4 pairing are 27.08 years and 25.76 years respectively.

Finite Element Simulation of the Artificial Knee-Joints of Similar Type Pairing

2013 ◽  
Vol 300-301 ◽  
pp. 243-247
Author(s):  
Li Liu ◽  
Lin Wei ◽  
Zhi Hong Liu
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Contact Analysis ◽  
Similar Type ◽  
Knee Joints ◽  
Equivalent Stresses ◽  
Element Simulation ◽  
The Law ◽  
Flat Ground

The stress relationship between several pairings was studied through the contrastive contact analysis between the artifical knee-joints of the same type pairing and similar type pairing in different angles and conditions to expand the application of the existing artifical knee-joints. The result shows that, the maximal equivalent stresses of the artifical knee-joints of similar type pairing are more than those of the artifical knee-joints of the same type pairing generally. The law is especially clear in conditions of larger force. In conditions of walking on the flat ground and climbing the stairs, the stress growths between 4/3 pairing and 3/3 pairing are the largest in 10° , they are 18.3% and 14.5% respectively; the stress growths between 3/2.5 pairing and 3/3 pairing are the largest in 20° , they are 13.4% and 15% respectively.

Finite Element Simulation of Tire-Rim Interface

1989 ◽  
Vol 17 (4) ◽  
pp. 305-325 ◽  
Author(s):  
N. T. Tseng ◽  
R. G. Pelle ◽  
J. P. Chang
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Finite Element Simulation ◽  
Contact Pressure ◽  
Element Model ◽  
Experimental Measurements ◽  
Inflation Pressure ◽  
Interference Fit ◽  
Element Simulation ◽  
Rubber Composite

Abstract A finite element model was developed to simulate the tire-rim interface. Elastomers were modeled by nonlinear incompressible elements, whereas plies were simulated by cord-rubber composite elements. Gap elements were used to simulate the opening between tire and rim at zero inflation pressure. This opening closed when the inflation pressure was increased gradually. The predicted distribution of contact pressure at the tire-rim interface agreed very well with the available experimental measurements. Several variations of the tire-rim interference fit were analyzed.

Numerical Simulation of Tire Sliding Events Involving Impacts with Holes and Bumps

1986 ◽  
Vol 14 (2) ◽  
pp. 125-136 ◽  
Author(s):  
Y. Nakajima ◽  
J. Padovan
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Finite Element Simulation ◽  
Full Range ◽  
Arbitrary Geometry ◽  
Operating Environments ◽  
Element Simulation ◽  
Simulation Scheme

Abstract This paper extends the finite element simulation scheme to handle the problem of tires undergoing sliding (skidding) impact into obstructions. Since the inertial characteristics are handled by the algorithm developed, the full range of operating environments can be accommodated. This includes the treatment of impacts with holes and bumps of arbitrary geometry.

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