Accession Number : AD0712130

Title :   THE BENDING DUGDALE MODEL,

Corporate Author : VIRGINIA POLYTECHNIC INST BLACKSBURG DEPT OF ENGINEERING MECHANICS

Personal Author(s) : Gonzalez,H. , Jr. ; Brinson,H. F.

Report Date : AUG 1970

Pagination or Media Count : 23

Abstract : The Griffith-Irwin-Orowan methods of fracture mechanics have been extended to the transverse bending of plates. Up to now no work has been done on the effect of plastic yielding in front of cracks in bending. In this paper a theory is developed along theoretical lines to predict this extent of plastic yielding in front of a crack under transverse bending. The theory consists of superimposing several Muskelishvili type stress functions in the same way Dugdale's model was used in tension. Solutions for the size of the plastic zone are obtained on the surface and through the thickness. The importance of this work is not only to achieve the solution of another boundary value problem, but to obtain information about real material behavior and contribute to the formulation of a theory for layered cracked composites in bending. (Author)

Descriptors :   (*BENDING, METAL PLATES), FRACTURE(MECHANICS), STRESSES, STRAIN(MECHANICS), LOADS(FORCES), YIELD POINT, CRACK PROPAGATION, PLASTIC PROPERTIES, COMPOSITE MATERIALS, BOUNDARY VALUE PROBLEMS

Subject Categories : Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE