A finite-element work-hardening plasticity model of the uniaxial compression and subsequent failure of porous cylinders including effects of void nucleation and growth. Part 2: Localization and fracture criteria

Journal Article · Mon Apr 01 04:00:00 EST 1996 · Journal of Engineering Materials and Technology

DOI:https://doi.org/10.1115/1.2804883· OSTI ID:237783

Lee, J H; Zhang, Y ^[1]

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1. Univ. of Alaska, Fairbanks, AK (United States). Dept. of Mechanical Engineering

In Part 1 of this paper, Gurson`s mixed hardening plasticity model with strain and stress-controlled nucleations, was used in large deformation finite element program to study the plastic flow and damage in the uniaxial compression of cylinders under sticking friction. Due to low stress triaxiality at the bulge of the cylinders, it was found that localization may occur before void coalescence. In this paper, necessary conditions of localizations are analyzed for the axial compression of porous cylinders under sticking friction. Shear band type of localization with a normal mode of fracture has been predicted for the majority of the cases studied. Various existing localization conditions and fracture criteria are assessed using the results form the simulation. The maximum shear stress at failure is approximately constant and a constant critical damage can not be found.

• Sponsoring Organization: USDOE
• OSTI ID: 237783
• Journal Information: Journal of Engineering Materials and Technology, Journal Name: Journal of Engineering Materials and Technology Journal Issue: 2 Vol. 118; ISSN 0094-4289; ISSN JEMTA8
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPRESSION STRENGTH
DAMAGE
FAILURES
FRACTURES
MATHEMATICAL MODELS
METALS
NUMERICAL ANALYSIS
POROSITY
SHEAR PROPERTIES
SIMULATION
STRAIN HARDENING
STRAINS
STRESSES
YIELD STRENGTH