This book compiles solutions of linear theory of elasticity problems for isotropic and anisotropic bodies with sharp and rounded notches. A discontinuity such as a circular, circumferential groove is a stress raiser. L if notch sensitivity data is not available, it is conservative to use kt in fatigue calculations. The twelfth chapter concerns with studying stress concentration near notches in quasiorthotropic bodies, that is bodies with the special type of orthotropy when the characteristic equation has. The maximum stress occurs on the inside of the hole, slightly below the shaft surface.
The problem of stressconcentration effects, produced by holes and notches in bars under tension is, of interest to machine designers. Stress concentration caused by sudden change in form. Special attention is given to the unified approach to the study of. The degree of stress and strain concentration is a factor in the fatigue strength of notched parts. This increase in stress due to sudden change of geometric shape is called stress concentration. Charts of theoretical stressconcentration factors k. It contains an overview of established and recent achievements, and presents the authors original solutions in the field considered with extensive discussion. Peterson, stress concentration factors, wiley, new york, 1974, pp. We present a survey of investigations of the stress concentration in elastic bodies weakened by sharp and rounded vnotches. This means all these features will also be associated with stress concentration effect. L convenient to think of kf as a stress concentration factor reduced from kt because of lessened sensitivity to notches.
Approximate stress concentration factors kts for a round bar or tube having a transverse round hole and loaded in torsion source. The effects of stress raisers are usually given in terms of a stress concentration factor, k, which is the factor by which the stress at the considered discontinuity is raised over the nominal stress in the area of the discontinuity. Stress concentration is the increased level of applied stress that develops at abrupt changes in section such as sharp transitions, abrupt changes in. The theoretical stress concentration factor, k t, 6 is defined as the ratio between the peak stress at the root of the notch and the nominal stress which would be present if a stress concentration did not occur. Stress concentration an overview sciencedirect topics. Fatigue stress concentration factors lkf is normally used in fatigue calculations but is sometimes used with static stresses.
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