scholarly journals Mechanical Design and Finite element Analysis for Acetabular cup

2019 ◽  
Vol 4 (4) ◽  
pp. 23-35
Author(s):  
Abdullah Muhammad Admed

Hip replacements typically consist of a four-part piece. Our research will focus primarily on the acetabular component. Several different types of materials can be used when creating a hip replacement implant ranging from plastic to titanium. Different materials are used to accommodate for allergic reactions or circumventing potential health risks. Aside from the material, the size of the components plays a factor in terms of durability; a larger diameter head might avoid dislodgement though it could increase wear and tear on the stems through constant friction. A patient’s force applied to the hip replacement is usually measured through a number of physical assessments. Finite element analysis (FEA), a computer-based method of data observation, allows for us to accurately simulate hip forces and their impact on the hip replacements. Through this, it becomes easier to predict and calculate the performance of specific designs. Generative systems can also be used to support performance analysis and optimization through assessing a multitude of cases, many of which apply in real-world scenarios. By applying both systems, we designed and modeled an acetabular cup that when measured decreased the mass from 129 grams initially down to 52 grams, a 60% decrease in total mass. Furthermore, the design we created lessened the trauma on the piece through distributing force across the entirety of the piece rather than specific segments only. This shows an increased durability and life expectancy when compared to usual acetabular cups.

2020 ◽  
Vol 5 (2) ◽  
pp. 22-34
Author(s):  
Muhammad Ahmed Abdullah

Hip replacements typically consist of a four-part piece. Our research will focus primarily on the acetabular component. Several different types of materials can be used when creating a hip replacement implant ranging from plastic to titanium. Different materials are used to accommodate for allergic reactions or circumventing potential health risks. Aside from the material, the size of the components plays a factor in terms of durability; a larger diameter head might avoid dislodgement though it could increase wear and tear on the stems through constant friction. A patient’s force applied to the hip replacement is usually measured through a number of physical assessments. Finite element analysis (FEA), a computer-based method of data observation, allows for us to accurately simulate hip forces and their impact on the hip replacements. Through this, it becomes easier to predict and calculate the performance of specific designs. Generative systems can also be used to support performance analysis and optimization through assessing a multitude of cases, many of which apply in real-world scenarios. By applying both systems, we designed and modeled an acetabular cup that when measured decreased the mass from 129 grams initially down to 52 grams, a 60% decrease in total mass. Furthermore, the design we created lessened the trauma on the piece through distributing force across the entirety of the piece rather than specific segments only. This shows an increased durability and life expectancy when compared to usual acetabular cups.


2021 ◽  
Vol 183 ◽  
pp. 331-336
Author(s):  
Zhang Liming ◽  
He Yulong ◽  
Xu Shanjun ◽  
Zhang Tong ◽  
Guo Junlong ◽  
...  

2021 ◽  
Author(s):  
Richárd Horváth ◽  
Vendel Barth ◽  
Viktor Gonda ◽  
Mihály Réger ◽  
Imre Felde

Abstract In this paper, we study the energy absorption of metamaterials composed of unit cells whose special geometry makes the cross-sectional area and the volume of the bodies generated from them constant (for the same enclosing box dimensions). After a parametric description of such special geometries, we analyzed by finite element analysis the deformation of the metamaterials we have designed during compression. We 3D printed the designed metamaterials from plastic to subject them to real compression. The results of the finite element analysis were compared with the real compaction results. Then, for each test specimen, we plotted its compaction curve. By fitting a polynomial to the compaction curves and integrating it (area under the curve), the energy absorption of the samples can be obtained. As a result of these investigations, we drew a conclusion about the relationship between energy absorption and cell number.


1992 ◽  
pp. 183-190
Author(s):  
V. Guarino ◽  
N. F. Hill ◽  
D. A. Hoecker ◽  
T. D. Hordubay ◽  
J. Nasiatka ◽  
...  

2021 ◽  
Author(s):  
Muhammad Izzuddin Md Isa ◽  
Solehuddin Shuib ◽  
Ahmad Zafir Romli ◽  
Amran Ahmed Shokri ◽  
Iffa Mohd Arrif ◽  
...  

2019 ◽  
Vol 48 (4) ◽  
pp. 428003
Author(s):  
张权 ZHANG Quan ◽  
李新 LI Xin ◽  
张艳娜 ZHANG Yan-na ◽  
黄冬 HUANG Dong ◽  
郑小兵 ZHENG Xiao-bing

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