Fatigue Strength of Shaft with Diameter Enlarged Partially by Cyclic Bending and Axial Compressive Loading

Abstract:

This paper experimentally and analytically investigates the fatigue strength and of mechanical damage of the processed shafts. First, we carry out rotary bending fatigue tests and investigate the fatigue strength for smooth specimens, specimen made only using cutting work, and specimens processed using a new plastic working developed originally. Secondly, we measure the Vickers hardness values to investigate strain hardening near the processed part. Finally, we simulate stress and strain distributions of the shaft during the processing using finite element method (FEM) and calculate the stress concentration rate at the notch root of the processed part. Based on the processing experiments and the finite element analyses (FEA), we clarify that the plastic work mechanically does not reduce the fatigue strength of shafts in the processing range.

• Periodical: Applied Mechanics and Materials (Volumes 217-219)
• Pages: 2346-2350
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.217-219.2346
• Online since: November 2012
• Authors: Xia Zhu, Nagatoshi Okabe, Keiji Ogi, Manabu Takahashi
• Keywords: Diameter-Enlargement Working Method, Fatigue Strength, Finite Element Method (FEM)

References

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