水冷油浸式电磁涡流制动器旋转轴的优化设计

摘要

水冷油浸式电磁涡流制动器是一种辅助制动装置,其旋转轴易发生疲劳断裂.基于对其断裂原因的分析,运用ANSYS 软件分别对两种材料和两种结构的电磁涡流制动器旋转轴进行有限元分析发现,其最大应力出现在轴肩台阶处,选用20CrMnTi作为电磁涡流制动器旋转轴的材料并在轴肩处增加过渡圆弧可延长其使用寿命.%The electromagnetic eddy current brake with water-cooled oil-immersed is a kind of auxiliary bra-king device,its internal shaft is often prone to fatigue fracture.Aiming at the fatigue life of further ascension,it analyzes the internal shaft structure of the electromagnetic eddy current brake based on the analysis of fatigue fracture reasons,applies two materials and two kind of structure to evaluate the fatigue stress of shaft,and simu-lates the fatigue stress in ANSYS,optimizes the structure of the electromagnetic eddy current brake internal shaft.