文章基本信息

标题：Shape And Topology Optimization Design For Total Hip Joint Implant
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作者：Rajaa S.Abass ; Muazez Al Ali ; Musaddiq Al Ali 等
期刊名称：Lecture Notes in Engineering and Computer Science
印刷版ISSN：2078-0958
电子版ISSN：2078-0966
出版年度：2019
卷号：2240
页码：559-564
出版社：Newswood and International Association of Engineers
摘要：Total hip joint replacement is a common procedure to retrieve the lower limp functionality for motorcycle accidents, and hip fracture due to bone weakness. Stress shielding is the factor that determine the duration of the implant functionality, such that the bone will dissolve around the implant which leads implant rejection. In order to perform lower stress shielding CT scan images are converted to finite element model then the optimization is performed for the actual bone modeling. Three methods of optimization are used to perform implant design with minimizing stress shielding as the objective function. Conformal lattice structures, level set shape optimization and solid isotropic material propertiesbased topology optimization are used. Level set method showed better result by reducing stress shielding to 81%. Conformal lattice structure increased stress shielding due to sharp edges of the metal cellular structure. Solid isotropic material properties topology optimization reduced the stress shielding to 78%.
关键词：Femoral implant; level set method; topology optimization; stress shielding