On the Tension of the Strip with Semicircular Notches

Abstract

In 1947 C.B. Ling published a research on the strip with semicircular notches under tension, but his numerical values were shown to be unreliable by several investigators. In this paper the same problem is treated by the method of perturbation, and convenient formulas available when the notches are not large, are introduced. The numerical values of the stress- concentration factor are fully examined with other data, theoretical and experimental, and they are shown to be more reliable than Ling's values. An approximate curve of α for large notches is also proposed as a result of the consideration.