The Study of Shrink Fit Design Empirical Formula
The regulation of stress concentration generated by the edge effect of shrink fit is studied in this paper. Firstly, experiment is designed with Latin hypercube (LH) method; then the maximum compound stress of the shrink fit is obtained by means of FEM; at last, the relationship among the maximum compound stress, shrink range, dimensional sizes of the shrink fit parts and material properties is fitted into a empirical formula via BP neural network. The formula is capable of offering good forecast to the maximum compound stress, and makes up the deficiencies of the design of shrink fit by using elastic mechanics (EM). At the end of this paper, the shrink fit of the drive axle housing is optimized with the empirical formula, and the maximum compound stress is abated greatly on the condition of ensuring the normal use of drive axle housing.
Y. He et al., "The Study of Shrink Fit Design Empirical Formula", Advanced Materials Research, Vols. 311-313, pp. 466-472, 2011