A Study On The Moulding Analysis And Structure Optimiztion Of Three-dimensional Titanium Implant For Cranioplasty

The three-dimensional titanium is the common material for cranioplasty repair, the problems such as uneven distribution of the porosity after deformation of the titanium, defective tightness of the born window adaption, edge warping, etc. occur frequently in the clinical application process. In order to get a better recovery for the patients and lessen the operating burdens of the doctor, the thesis tries to solve the above problems by optimizing the three-dimensional titanium geometrical structure.In the thesis, the computer aided technology is used to design the optimization of the three-dimensional titanium geometrical structure. And the geometrical model and the FE model of titanium are formed respectively. Then the cranioplasty restoration is taken as the reference in the forming process due to its high degree deformation and high frequency of the other problems discussed above based on the data in the clinical application. In order to be observed and analyzed better, the spherical cap is used to replace restorations data, models are made, and CAE technology is used in the simulation of the whole process of punch and deformation.The basic reasons for the edge curling of the titanium implant are found through the analysis of the geometrical parameter measurement and the stress strain. Therefore, the titanium geometrical structure is redesigned. Consequently, on the basis of the deformation effect of the optimized simulation clinical cases, it proves that the optimized three-dimensional titanium can be used to solve the edge curling and uneven distribution of the porosity after deformation as well.