Accession Number : AD0693494

Title :   THE PROBLEM OF FAILURE OF A BRITTLE BODY WITH A DISK-SHAPED CRACK,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON 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 lentil-shaped 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 three-dimensional elastic solid without a crack subjected to stresses p and q applied at infinity; and (b) stresses in this solid with a lentil-shaped 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