Finite Element Analysis for Prediction of Shear and Stress Concentration & Distribution in Femoral Bone

11th Joint Conference on Chemistry in Conjunction with the 4th Regional Biomaterials Scientific Meeting

材料科学;化学;生物科学

Suhendra, N.^1 ; Gustiono, D.^1 ; Nugroho, E.A.^1 ; Masmui^1 ; Yuliani, H.^1

Agency for the Assessment and Application of Technology, Puspiptek Distric, Serpong-South Tangerang-Banten, Indonesia^1

关键词: Artificial implants;    Femoral stems;    Formation mechanism;    Formation model;    Friction coefficients;    Further works;    Sliding distances;    Wear particles;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/172/1/012033/pdf
DOI  :  10.1088/1757-899X/172/1/012033

来源: IOP

【 摘 要 】

The effect of micromotion on the shear shielding and size of yielding region in the bone asperity in contact with metal of femoral stem was investigated. The main objective of this work was to gain an understanding of bone wear particleformation mechanism from the two-dimensional finite element model of cementless femoral stem type. To assess the influence of the parameters of interest, different friction coefficients and sliding distance (micromotion)were used in the numerical simulations. Results from the finite element analysis showed that the increase ofthe yielding region is strongly influenced by the rise in sliding distance (micromotion), which is related to the generation of bone wear particle formations. Finite element bone wearparticle formation model, based on strain discontinuities, was therefore proposed for further works. The results obtained in this study can lead to the development of an accurate finite element wearparticle formation mechanism model that would be of use in the assessment of an artificial implant performance and their development.