Estimation of distribution of stresses of structure of bionic endoprosthesis of brush joint
Nikolaenko A.N.
State Budget-funded Educational Institution of Higher Professional Education Samara State Medical University
Brief summary
The biomechanical behavior of endoprosthesis replacement systems with implant fixation plays an important role in its functional durability inside the bone. The finite element method showed that the concentration of stresses occurring exclusively in the cortical bone near the neck of the implants is responsible for initiating bone resorption in this area. The purpose of the study is to assess the stress distribution in the design of the bionic endoprosthesis of the hand joint by the finite element method. The results showed that cases without power load are not dangerous for the prosthesis. In the case of ball gripping with a brush with a finger load of 25.16 ? 3.3 N, sufficient safety factors were obtained both for bone tissue (at least 4) and for the material of the prosthesis (at least 4.65). The fatigue safety factor has a minimum value of 1.36 for the second case of loading on the prosthesis of the first part of the model. This shows that in case of constant loading in this mode, fatigue defects may appear and physical activity with high loads on the prosthesis should be limited.
Key words
bionic endoprosthesis, hand joints, biomechanics, finite element method
1. Andani, M.T. Metals for bone implants. Part 1. Powder metallurgy and implant rendering [Text] / M.T. Andani, N.S. Moghaddam, C. Haberland [et al.] // Acta Biomaterialia.- 2014 - P. 4058-4070.
2. Namiki, A. Y. Development of a High-Speed Multi-Fingered Hand System and its Application to Catching [Text] / A. Y. Namiki, M. Imai, M. Kaneko // Proceedings of the IEEE/RSJ International Conference on Intelligent Robots and Systems. - 2013 - 14 - P. 2666-2671.
3. Kargov, A. Development of an Anthropomorphic Hand for a Mobile Assistive Robot [Text] / A. Kargov, T. Asfour, C. Pylatiuk [et al.] // 9th International Conference on Rehabilitation Robotics, (ICORR) . - 2015 June 28 - July 1 - Chicago, IL, USA, P. 182-186.
4. Zaid, A. M. UTHM HAND: Performance of Complete System of Dexterous Anthropomorphic Robotic Hand [Text] / M. Zaid, M. A. Yaqub // International Symposium on Robotics and Intelligent Sensors (IRIS). - 2012- V. 41 -P. 777-783.
5. Wilmowsky, C. Implants in bone: part I. A current overview about tissue response, surface modifications and future perspectives [Text] / C. Wilmowsky, T. Moest, E. Nkenke [et al.] // Oral Maxillofac Surg. - 2014 - - P. 243-257.
6. Walha, C. An Adaptive Particle Swarm Optimization Method for Solving the Grasp Planning Proble [Text] / C. Walha, H. Bezine A. M. Alimi // International Symposium on Robotics and Intelligent Sensors (IRIS), Procedia Engineering. -2012 - Elsevier - V. 41 - P. 426 - 435.
7. Takaki, T. High Performance Anthropomorphic Robot Hand with Grasp Force Magnification Mechanism [Text] / T. Takaki, T. Omata // Proceedings of IEEE International Conference on Robotics and Automation. - 2017 - 25- P. 1697-1703.
8. Pons, J. L. The MANUS-hand dextrous robotics upper limb prosthesis: mechanical and manipulation aspect [Text] / J. L. Pons, E. Rocon, R. Ceres [et al.] // Autonomous Robots. - 2014 -V. 16. - P. 143-165.