Contact Mechanics and Vibration Analysis of Artificial Hip Joint

• Main Authors: Tzu-Hsaun Wei, 魏子瑄
• Other Authors: Shyh-Chour Huang
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/89349108713838558796

碩士 === 國立高雄應用科技大學 === 機械與精密工程研究所 === 103 === Total hip arthroplasty is one of the most successful and highest capable rate surgery in Taiwan in the past ten years. By total hip arthroplasty, patients replace the painful and functionless hip with hip endoprosthesis system and return to everyday activities. The influence of modal’s parameters on contact force and penetration depth in most of literatures which concern contact-impact modal of hip arthroplasty only show the tendency of the parameters. For the concrete value of the parameters, we use the analysis of variance to get the influence degree of the parameters of the contact-impact modal. The influence degree are Young’s modulus & Poisson’s ratio 46.22%, initial relative contact velocity 40.30%, joint clearance 8.64%, and shell size 1.83%. Then, we combined Taguchi method and fuzzy theory to find the best combination of these parameters. It is shell size 14mm, joint clearance 30μm, ceramic material, restitution coefficient 0.9, and initial relative contact velocity 0.6m/s. Finally, we use gait instances data on harmonic response analysis to make sure that our best combination modal won’t loosen.