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Stress Concentration and Fatigue Strength of Notched Specimens Under Repeated Bending Moment (3rd Report)

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 17 Issue 3 Page 35-40
published_at 1966
KJ00000155578.pdf
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Title
外周切欠材の応力集中と回転曲げ疲労強度について(第3報)
Stress Concentration and Fatigue Strength of Notched Specimens Under Repeated Bending Moment (3rd Report)
Creators Ono Motoaki
Creators Yoshimatsu Yasuo
Source Identifiers
Continued from the 2nd report, we treat the identical problems of the stress concentration and fatigue limit under repeated rotating bending of the circular shaft with circumferential groove of a circular arc. As to the stress concentration factor α_K of this type of notch, we can calculate approximately from auther's formula, which regard this notch of circular arc as an equivalent elliptical form, and then these calculated values were compared with that of photoelastically measured. We used 1.5kgm small type of endurance testing machine, whose test piece's dia. 6m/m, and repeating cycles per minute are 3,000. The obtained results of No.1 and No.2 low-carbon steel testpieces are that their notch factors 1.04~1.09,against to these stress concentration factos 1.37~1.45 caluculated. From these results we see the characteristic curve of α_K to the a/H ratio (a : minimum breadth, H : maximum breadth) agrees with the β_K characteristic to the d_0/d ratio.
Subjects
機械工学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1966
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部