Finite element analysis of artificial hip joint implant made from stainless steel 316L

Background: AISI 316L stainless steel material is one of the widely used hip joint implant material. Even with excellent properties for the hip joint implant, this material is likely to fail after 12-15 years of implantation because of excessive wear and stresses. The computational analysis using the finite element method can be used to analyze the stress in the hip joint implant. The study aims to evaluate the stresses and safety factors analysis on the hip joint implant using four different types of AISI 316L materials from several manufacturers are highlighted as the objective of this study. Method: There are four different types of AISI 316L materials used in this study, which are manufactured with different methods. These materials are simulated into Diponegoro University's artificial hip joint design. The ASTM F2996-13 and ISO 7206-4 are considered standard references in the simulation for loading and boundary condition application. Results: Based on the static structural analysis, the total deformation, equivalent elastic strain, equivalent von-Mises stress, and the safety factor are obtained from Undip hip joint implant design. Conclusion: The analysis concludes that the four types of stainless steel materials are safe for UNDIP hip joint implants, which have >1 safety factor. The highest safety factor is obtained from the forging material but has a high manufacturing cost that needs to be optimized.