Digital Repository, ICF12, Ottawa 2009

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Finite–Element Analyses of Combined Void Shape and Plastic Anisotropy Effects in Ductile Fracture
A. A. Benzerga, S. M. Keralavarma

Last modified: 2013-05-03


Prediction of ductile fracture in structural metallic materials requires some
representation of microstructural effects, including the plastic anisotropy
that is associated with initial or induced polycrystalline textures and the microscopic
processes of void growth and coalescence. With the objective
of characterizing existing continuum models, we present a finite-element
study of cylindrical unit cells, consisting of spheroidal voids embedded in
an orthotropic Hill matrix, subjected to proportional loading paths. Twodimensional
axisymmetric calculations are employed for the case of transverse
isotropy and axisymmetric loading about the void axis. The effective
cell model responses are compared with predictions from an extended model
of anisotropic void growth, which is the subject of an accompanying paper

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