Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 International Journal of Applied Mechanics and Engineering

1 2005

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: stress and displacement distribution

Sortuj według:

Ogranicz wyniki do:

Biomechanical analysis of human pelvis under muscolo-skeletal load using 3D finite element method

Majumder S., Roychowdhury A., Pal S.

International Journal of Applied Mechanics and Engineering

2005

Vol. 10, no 4

647-665

During walking, the human pelvis is Ioaded by hip contact force and 22 muscle forces. Due to its complex geometry and structure, biomechanics of the human pelvis is complicated. A three-dimensionaI finite element model of the fulI pelvis was developed and the stress and deformation pattern was mapped, considering musculoskeletal loading, during 8 phases of a normal walking cycIe. The cortical and trabecular bones were modeled with shell-solid elements. The full model consisted of 71 674 tetrahedral and 17 264 shell elements (four-noded), through 16429 nodes. An algorithm was aIso developed to calculate the components and direction of 22 muscle forces, considering the origin, insertion points and change of femur position, relative to the pelvis during walking. Stress contour maps revealed that the zones and magnitudes of maximum von-Mises stresses (28 to 38 MPa for the cortical bone and 1.3 to 1.7 MPa for the trabecular bone) varied from phase to phase during walking. AIso the average phase wise variations for the resultant displacement were 0.1 to 0.5 mm. These results may be used approximately for a cIinical comparison between the normal pelvis and the effectiveness of different pelvic fracture fixation modalities.