مهندسی متالورژی

مهندسی متالورژی

تحلیل المان محدود استخوان ران و مفصل زانو جهت بهبود طراحی پروتز زیر زانو به منظور کاهش تنش‌های وارد شده تحت بارگذاری فیزیولوژیکی

نوع مقاله : مقاله پژوهشی

نویسندگان
1 گروه مهندسی مکاترونیک، دانشکده مهندسی مکانیک، دانشگاه تبریز، تبریز، ایران
2 دانشکده مهندسی مکانیک، دانشگاه تبریز، تبریز، ایران
چکیده
در این پژوهش طراحی و شبیه‌سازی پروتز استخوان زانو مورد بررسی قرار گرفت. مدل ارائه شده شامل استخوان ران، سر تیبیا، منیسک، عضله، سوکت و لاینر بود که ابتدا تحت بارگذاری فیزیولوژیکی قرار گرفت و بر اساس نتایج آن فرایند بهینه‌سازی بر روی مدل سوکت انجام گرفت. در ادامه سوکت بهینه شده و غیربهینه تحت بارگذاری مشابه و شرایط مرزی یکسانی قرار گرفتند تا اثر سوکت بهینه شده بر روی تنش و جابجایی اجزای مختلف پروتز پا مورد مطالعه قرار گیرد. نتایج نشان داد که سوکت بهینه شده، تنش معادل بر مبنای فون مایزس را در سرتاسر پا کاهش می‌دهد و اندازه جابجایی آن را نیز با اندکی کاهش مواجه می‌کند. رفتار مورد نظر اثربخشی سوکت بهینه را در جذب تنش و محافظت از سایر اندام‌ها نشان داد و استفاده از آن را برای کابردهای پزشکی در آینده قوت بخشید. مدل می‌تواند با گنجاندن وابستگی خواص مادی استخوان به چگالی بهبود یابد و در بارگذاری‌های سیکلی و نیروهای متفاوت مورد تحلیل قرار گیرد تا رفتار مدل ارائه شده در شرایط مختلف مورد ارزیابی قرار گیرد.
کلیدواژه‌ها

عنوان مقاله English

Finite Element Analysis of Femur Bone and Knee Joint to Improve the Design of a Leg Prothesis in Order to Reduce Stresses Under Physiological Loading

نویسندگان English

Mohammad Adeli 1
Akbar Allahverdizadeh 1
Pezhman Namashiri 2
1 Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran
2 Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran
چکیده English

In this study, the design and simulation of knee prosthesis was investigated. The presented model included femur bone, tibial head, meniscus, muscle, socket, and liner, which was first subjected to physiological loading, and based on the results, the optimization process was performed on the socket. Next, the optimized and non-optimized sockets were subjected to the same loading and the boundary conditions in order to study the effect of the optimized socket on the stress and displacement of different components of the leg prosthesis. The results demonstrated that the optimized socket reduces the equivalent stress based on von Mises throughout the leg, and slightly reduces the displacement. The intended behavior showed the effectiveness of the optimal socket in absorbing stress and protecting other organs and strengthened its use for medical applications in future. The model can be improved by including the dependence of bone material properties on density and analyzing in cyclic loadings and different forces to evaluate the behavior of the presented model in different conditions.

کلیدواژه‌ها English

Knee Prothesis
Femur bone
Socket
Biomechanics
Finite element analysis
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  • تاریخ دریافت 01 شهریور 1402
  • تاریخ بازنگری 04 تیر 1404
  • تاریخ پذیرش 03 مهر 1404