چكيده به لاتين
Today in design science, the goal is not just design to meet the needs, but optimized design and weight loss and consumables has become a must, optimizing to find the best solution to the output of a process function by modifying the inputs of a system. In today's world, the issue of optimization has been much welcomed with regard to the issue of reducing consumption and weight in component manufacturing. Optimization in today's world has become one of the priorities of component design. One of the areas of structural optimization is topology optimization. Topology optimization means the ontological science of positioning an object.
Topology optimization actually provides an optimal model of the distribution and distribution of matter in a segment with respect to the target function for which we determine it. By changing the boundaries of the element nodes on the surface they try to reduce their stress concentration. Tension shield is a phenomenon that arises after arthroplasty and implant placement in the body due to differences in the rigidity of the material used in the implant and bone construction. Stress shields reduce the stresses on the bones, making them weakened by Wolfe's law, and failing to properly perform bone regeneration. This thesis deals with the identification and investigation of optimization techniques and algorithms, and its application in hip arthroplasty optimization to reduce stress shield. In this thesis a new solution of topology optimization is presented. Optimization of the hip joint implant based on minimum volume and minimum stiffness energy. It should be noted that the two are ultimately considered simultaneously for the problem. That is, they are not separately used to optimize the topology of the SIMP method.
In this thesis we are looking to optimize hip implants. In this method, a percentage of density is considered for each element. And the elements are fined the middle density. In this method, first the finite element analysis is performed on the desired shape, then the elements which have less role in the load bearing are removed and a percentage of the density of that element is removed and re-analyzed. Finally, with respect to the penalty coefficient, the elements that are less sensitive to the calculated value are considered as zero, or omitted. This process until the conditions of the objective function and constraints are met
Repeats. The purpose of this optimization is to produce lighter, more durable implants in vivo.
