Fatigue life prediction for threaded joint

Abstract

This paper presents the modified normative me-thod for threaded joints improved by incorporating in the calculation the data of load distribution in threads. There is used the model for calculation of load and stress distribu-tion along the thread based on elastic plastic deformation properties of the joint materials and full and partial profile turns couples. Results of fatigue life prediction are close to the experimental values, howerer do not exceed them.