
Accession Number : AD0693494
Title : THE PROBLEM OF FAILURE OF A BRITTLE BODY WITH A DISKSHAPED CRACK,
Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHTPATTERSON AFB OHIO
Personal Author(s) : Panasyuk,V. V. ; Andreikiv,A. E.
Report Date : 11 JUL 1969
Pagination or Media Count : 12
Abstract : The limit equilibrium of an infinite homogeneous isotropic solid with an internal lentilshaped crack of diameter 2a is discussed. Monotonically increasing, mutually orthogonal, uniformly distributed stresses (tension or compression) p and q are applied at infinity parallel to the xOz plane at angle to the xOy plane; there are no external forces on the crack surface. The problem is to determine the limit values p and q at which the crack starts to propagate, i.e., when a local failure occurs in the solid. The following premises are made. The state of stress in the neighborhood of the crack's contour is considered as a sum of two states: (a) stresses in a threedimensional elastic solid without a crack subjected to stresses p and q applied at infinity; and (b) stresses in this solid with a lentilshaped crack. The broken line bounds the domain of values for p and q, which do not endanger the strength of a brittle solid with cracks of the type discussed. (Author)
Descriptors : (*SOLIDS, FAILURE(MECHANICS)), BRITTLENESS, CRACKS, CRACK PROPAGATION, STRESSES, USSR
Subject Categories : Mechanics
Distribution Statement : APPROVED FOR PUBLIC RELEASE