INVESTIGATION OF THE DISTRIBUTION OF TENSILE AND BENDING STRESSES IN NOTCHED FLAT BARS.
Report for 1961-1962,
TECHNISCHE HOCHSCHULE MUNICH (WEST GERMANY)
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The treatment of stress concentration in plates of arbitrary thickness is outlined. By means of the authors Three functions set the complete solution for these problems can be established. The usual stress functions are to be extended by additional functions in order to fulfill the com plete boundary conditions in flat bar problems as well as in plate bending problems. Results of the theory are given for infinite flat bars in tension and plates in bending with a circular hole. The results of static and fatigue tests with notched specimens are given. Static tests were performed with medium thick plates contain ing a pair of semicircular notches in transverse bending. Stress- and strain distributions in the elastic and plastic range respectively and the dependence of the stoncentration factor on the nominal stress are given. Push-pull fatigue tests had been carried out to study the influence of stress concentration on the fatigue strength. Author