Communication science et technologie
Volume 17, Numéro 1, Pages 107-119
2019-01-01
Finite Element Analysis Of The Posterior Loading Effect On The Spine Components
Authors : Zahaf S. . Aour B. .
Abstract
The objective of this work is to study the effect of the backpack on the components of the spine system of a child and to know the effect of an eccentric load on the intervertebral discs. To this end, a 3D finite element model of the spine of child of 38 kg has been created to study the effect of three eccentric load (P2, P3, P4) plus compression load P1 on the biomechanical behaviour of the spine. For the boundary conditions, the sacrum (Embedding the sacrum)has been fixed. We propose in this work to draw up a comprehensive study of the Von Mises stresses distributions and normal elastic strains in the intervertebral discs based on the loads supported. The results show that the Von Mises stresses and strains are highest and concentrated in four intervertebral discs (D1, D15, D16 and D17), which causes a problem that calls (herniated disc). We concluded that the cause of the posterior load, a 350 mm lever arm with a 200N load present maximum Von Mises stresses concentrated in four intervertebral discs (D1, D15, D16, D17). This justifies that the distance between the applicationpoint of the load and the axis of the spine plays a very important role in increasing the solicitation of the latter.
Keywords
Biomechanics, Lumbar-Thoracic, Intervertebral Discs, Finite Element, Disc Degeneration, Backpack.
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