Abstract
In order to assess whether the durability of the designed product meets the requirements or not, the fatigue strength should be analyzed in product designing stage. With the help of ANSYS finite element analysis software, the detail fatigue rating (DFR) method and the linear cumulative damage theory are used to analyze the actuator from three aspects of the static strength, stiffness and fatigue strength. A Stiffness Model of the Actuator has been built in the static strength analysis. The paper also highlighted the theoretical derivation of the DFR and the application in the fatigue strength calculation of the actuator. In practical projects, this method can be applied to similar products, and it can be used as a verification method for design optimization.
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