Optimized Design of Medical Welded Structures for Life Enhancement

Aim: ing at the problems of short fatigue life and poor structural stability of welded structures of medical equipment in high-frequency use and corrosive environments, this paper puts forward a life-improvement oriented optimization design method. By clarifying the optimization objectives and constraints, combining material property analysis, welding process parameter regulation and structural topology optimization, a multi-objective design model is constructed, and finite element simulation and physical experiment verification are carried out. The results show that the optimization scheme can significantly improve the fatigue life of the structure by 143%, reduce the residual stress by 27.4%, and reduce the defect rate of the weld by 66.7%, which verifies the effectiveness and practicality of the design strategy.