BULETINUL INSTITUTULUI POLITEHNIC DIN IAŞI

64 Marius Catană and Daniela Tarniţă
eqhilibrum position, the maximum calculated Von Misses stress of 13.8 MPa
occurs near to the femural proximal head (Fig. 6).
The non-linear analysis emphasised the Von Missed stress in the cartilages
of femur (Fig. 7) and of tibia (Fig. 8), the stresses due to contact pressures being
uniformed distributed. The values of the stresses at the cartilages levels are in
the limits reported by others outhors. The maximum strain due to compression
forces in the cartilages (Fig. 10) and meniscus (Fig. 9) is 10%, also this is in the
limits reported by others.
Fig. 5 – a – total displacement;
b – lateral displacement.
Fig. 6 – a – on Misses Stress;
b – femur Stress.
Fig. 7 – stress for femoral cartilage.
Fig. 8 – stress for tibia cartilage.
Fig. 9 – left – stress for the medial
meniscus; right – stress for the
lateral meniscus.
Fig. 10 – The compression strains for
femur and tibia cartilages.