Accession Number : ADA188404

Title :   A Simulation of Void Lining during Ductile Fracture.

Descriptive Note : Technical rept.,

Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF MATERIALS SCIENCE AND ENGINEE RING

Personal Author(s) : Magnusen, P E ; Srolovitz, D J ; Koss, D A

PDF Url : ADA188404

Report Date : Sep 1987

Pagination or Media Count : 34

Abstract : A computer model is developed for the simulation of low temperature ductile fracture of metals which contain random distributions of voids. Void distributions are modeled in two dimensions as arrays of circular holes which are characterized by area fraction, hole size, and a minimum hole spacing parameter which controls the degree of clustering. Experimentally measured local plasticity near holes provide the basis for the simulation, and predictions are made without the use of parameters to force fit. The simulation, illustrates the process of void linking with strain and correctly predicts the failure strains of aluminum and alpha-brass specimens over a range of hole-void microstructures. Keywords: Ductile fracture, Void linking, Porosity effects, Mechanism of fracture, Microvoids.

Descriptors :   *COMPUTERIZED SIMULATION, *DUCTILITY, *FRACTURE(MECHANICS), *VOIDS, *ALUMINUM, *BRASS, ARRAYS, CIRCULAR, CLUSTERING, DISTRIBUTION, HOLES(OPENINGS), LOW TEMPERATURE, PLASTIC PROPERTIES, POROSITY, SIZES(DIMENSIONS), MATHEMATICAL MODELS, STRAIN(MECHANICS)

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE