抄録
In the preceeding report, the authors explained the fatigue deformation of various kinds of steels. In the present report, the authors intend to explain how the fatigue deformation should be treated analytically in view of distribution of stress within the specimen.
Results obtained are as follows:
(1) A useful equation was introduced for expressing the magnitude of fatigue deformation under uniform distribution of stress. Two constants, included in this equation, may be determined from the fatigue test and take the same values in both cases of normal and shear stresses.
(2) It was cleared that the mean stress distribution within the specimen after fatigue deformation under uneven stress distribution can be obtained by calculation by using the above equation. By this treatment, the magnitude of fatigue deformation in this case can be also determined.
(3) Analytical treatment to obtain the magnitude of fatigue deformation was introduced for the specimens having residual stress or being work-hardened by prestressing.
(4) Analytical results have shown favorably agreement with the experimental ones for every cases of performed experiments.
