Finite element analysis was carried out on the Ti-Ni thoracic aortic vascular stent,and the mechanical compressing process of stents with different sizes was simulated by the finite element software and the stress distribution was analyzed to pick out the most dangerous and possible failure stents. Then the service condition of the four stents that had been chosen was simulated and the Goodman principal was used to evaluate the lifetime,with a fatigue test in vitro to verify the theoretical analysis. The re...
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