Wyniki wyszukiwania - Biblioteka Nauki

Ten serwis zostanie wyłączony 2025-02-11.

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

1 International Journal of Applied Mechanics and Engineering

1 2002

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Contact mechanics of a graded layered bearing surface for knee prosthesis

100%

Virdee S. S. , Jin Z. M.

International Journal of Applied Mechanics and Engineering

2002

tom Vol. 7, no 3

1025-1032

Recent studies have shown that a full fluid film lubrication regime can be developed in artificial knee joint replacements under simulated steady-state walking conditions by employing a thin compliant bearing surface with an elastic modulus similar to that of natural articular cartilage (Unsworth et al., 1988); Auger et al., 1993). The compliant bearing surface is usually bonded to a relatively stiff substrate in order to provide the structure support. Due to the abrupt change in stiffness, high interfacial shear strain is developed between the compliant layer and the stiff substrate and de-bonding usually occurs. The de-bonding problem can be expected to be alleviated to a certain extent by using functionally graded materials with variable stiffness. The purpose of this study was to analyze the contact mechanics of these functionally graded materials, with particular reference to knee prostheses. The finite element method was used to predict the contact parameters including the predicted contact pressure at the bearing surfaces and the interfacial shear strain between the compliant layer and the polymeric substrate.