Researches on Increasing the Fatigue Strength of Press-Fit Shaft : 4th Report, Geometry of the End of Press-Fitting and σ_< w1 >

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概要

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• The present study is performed to increase the fatigue limit, σ_<w1> which is determined from the occurrence of minute cracks at the press-fitted portion. A number of rotating bending fatigue tests are carried out on 50 mm-dia press-fitted shaft assemblies. The results obtained are as follows. (1) In the case of press-fitted assemblies where the hub end face coincides with the shoulder of the fillet of shaft, the fatigue limit, σ_<w1>, increases with the decrease of fillet radius and with the increase of diameter ratio. (2) Relative slip and the region of fretting corrosion can be decreased with an increase of diameter ratio. (3) Over hanging of the hub over the fillet of shaft can increase σ_<w1>, and reduce the region of the occurrence of fretting corrosion.

• 一般社団法人日本機械学会の論文

著者

• Nishioka Kunio

  Central Research Laboratories

• KOMATSU Hideo

  Central Research Laboratories, Sumitomo Metal Industries. Ltd., Amagasaki.

• Komatsu Hideo

  Central Research Laboratories Sumitomo Metal Industries Ltd.

関連論文

• Fundamental Investigations of Fretting Fatigue : Part 3,Some Phenomena and Mechanisms of Surface Cracks
• Fundamental Investigations of Fretting Fatigue : Part 1,On the Relative Slip Amplitude of Press-fitted Axle Assemblies
• Fundamental Investigations of Fretting Fatigue : Part 4,The Effect of Mean Stress
• Fundamental Investigations of Fretting Fatigue : (Part 5,The Effect of Relative Slip Amplitude)
• Strength of Integral Pipe Flanges : No.2 Gasket Seating Stress and the Influence of Number of Bolts
• Strength of Integral Pipe Flanges : No.1 Stress Distribution in Flange and the Criticism of the Conventional Standards
• Research on the Reinforcement with a Rib : (5th Report, The Deformation of Structural Parts Reinforced with Ribs where the Cross Section of Intersecting Members is Equal)
• Researches on Increasing the Fatigue Strength of Press-Fit Axle : 2nd Report Press-Fitted Shaft Assembly Two Dimensional Photoelasticity
• Researches on Increasing the Fatigue Strength of Press-Fit Shaft : 4th Report, Geometry of the End of Press-Fitting and σ_< w1 >
• The Strength of Railroad Wheels : 1st Report, Thermal Stresses in Disc Wheels
• Research on the Reinforcement with a Rib : (6th Report, The Deformation of Structural Parts Reinforced with Ribs where the Cross Sections of Two Intersecting Members Are Different in Rigidity)
• Fatigue Strengths of Shafts with Press-fitted Collar
• The Effects of Metallurgical Factors on Fatigue Strengths : Part 1,The Effects of Carbon and the Relations between Static Strengths and Fatigue Strengths
• The Effects of Metallurgical Factors on Fatigue Strength : Part 3, The Effects of C, Si, Mn, P and Cu (2)
• Researches on Increasing the Fatigue Strength of Press-Fitted Shaft Assembly
• The Effects of Metallurgical Factors on Fatigue Strength : Part 4, The Effects of N and B
• The Effects of Metallurgical Factors on Fatigue Strength : Part 5, The Effects of Ni, Cr and Mo (1)
• The Effects of Metallurgical Factors on Fatigue Strength : Part 2, The Effects of C, Si, Mn, P and Cu (1)
• The Strength of Railroad Wheels : 2nd Report, The Effect of Wheel Contours on Thermal Stresses in Wheels
• A Fractographic Study of Fatigue Fracture of AISI 4340 Steel

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