Dynamic Fatigue Behavior of Hip Joint under Patient Specific Loadings

IF 1 Q4 ENGINEERING, MECHANICAL
Tanuj Joshi, Ravikant Sharma, V. Mittal, Vikas Gupta, G. Krishan
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引用次数: 6

Abstract

In the present work, a finite element model with standard Charnley’s implant of hip joint is considered for investigation under different patient-specific dynamic activities obtained in vivo. The application of forces occurred due to human movement, which ultimately generates dynamic stress over the prosthesis. Anatomical loading constraints are more clinically relevant than ISO standards. The performance of different materials for each suitable gait pattern is analyzed using commercial finite element code. A liner isotropic material Ti-6Al-4V and PMMA material is utilized for an implant and bone cement, respectively. However, cortical and cancellous bone are treated as non-isotropic in nature. Clinically obtained dynamic forces and torque are being used for the present investigation. Additionally, Goodman, Solderberg, Gerber and ASME elliptic fatigue theories were considered to obtain the fatigue life of the implant. The most strenuous activity in terms of stress and strain are, going downstairs followed by going upstairs, walking, standing up and sitting down, which have been found in good agreement with the safety factor for every activity. Additionally, the life expectancy of the implant was a minimum of 23 years under every dynamic motion. The present work exhibits the greater relevance in terms of the life expectancy of implant for the pre-surgical analysis before implanted in vivo.
患者特定负荷下髋关节的动态疲劳行为
在本工作中,我们考虑了一个具有标准Charnley髋关节假体的有限元模型来研究不同患者在体内获得的动态活动。由于人体运动而产生的力的应用,最终在假体上产生动态应力。解剖载荷约束比ISO标准更具有临床相关性。采用商用有限元程序分析了不同材料在不同步态模式下的性能。内衬各向同性材料Ti-6Al-4V和PMMA材料分别用于种植体和骨水泥。然而,皮质骨和松质骨在本质上被认为是非各向同性的。临床获得的动态力和扭矩被用于本研究。此外,还考虑了Goodman、Solderberg、Gerber和ASME椭圆疲劳理论来获得种植体的疲劳寿命。在压力和紧张方面,最剧烈的活动是下楼,其次是上楼,走路,站起来和坐着,这与每项活动的安全系数都很吻合。此外,在每次动态运动下,种植体的预期寿命至少为23年。目前的工作表现出更大的相关性,就植入物的预期寿命而言,在植入体内之前的术前分析。
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来源期刊
CiteScore
2.40
自引率
10.00%
发文量
43
审稿时长
20 weeks
期刊介绍: The IJAME provides the forum for high-quality research communications and addresses all aspects of original experimental information based on theory and their applications. This journal welcomes all contributions from those who wish to report on new developments in automotive and mechanical engineering fields within the following scopes. -Engine/Emission Technology Automobile Body and Safety- Vehicle Dynamics- Automotive Electronics- Alternative Energy- Energy Conversion- Fuels and Lubricants - Combustion and Reacting Flows- New and Renewable Energy Technologies- Automotive Electrical Systems- Automotive Materials- Automotive Transmission- Automotive Pollution and Control- Vehicle Maintenance- Intelligent Vehicle/Transportation Systems- Fuel Cell, Hybrid, Electrical Vehicle and Other Fields of Automotive Engineering- Engineering Management /TQM- Heat and Mass Transfer- Fluid and Thermal Engineering- CAE/FEA/CAD/CFD- Engineering Mechanics- Modeling and Simulation- Metallurgy/ Materials Engineering- Applied Mechanics- Thermodynamics- Agricultural Machinery and Equipment- Mechatronics- Automatic Control- Multidisciplinary design and optimization - Fluid Mechanics and Dynamics- Thermal-Fluids Machinery- Experimental and Computational Mechanics - Measurement and Instrumentation- HVAC- Manufacturing Systems- Materials Processing- Noise and Vibration- Composite and Polymer Materials- Biomechanical Engineering- Fatigue and Fracture Mechanics- Machine Components design- Gas Turbine- Power Plant Engineering- Artificial Intelligent/Neural Network- Robotic Systems- Solar Energy- Powder Metallurgy and Metal Ceramics- Discrete Systems- Non-linear Analysis- Structural Analysis- Tribology- Engineering Materials- Mechanical Systems and Technology- Pneumatic and Hydraulic Systems - Failure Analysis- Any other related topics.
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