A void–crack nucleation model for ductile metals

TLDR: A phenomenological void-crack nucleation model for ductile metals with second phases is described in this paper, which is motivated from fracture mechanics and micro-scale physical observations, and the model is a function of the fracture toughness of the aggregregate material, length scale parameter (taken to be the average size of the second phaseparticles in the examples shown in this writing), the volume fraction of second phase, strainlevel, and stress state.

About: This article is published in International Journal of Solids and Structures.The article was published on 1999-11-01 and is currently open access. It has received 202 citations till now. The article focuses on the topics: Nucleation & Fracture mechanics.

Figures

Fig[ 3[ "a# Nucleation per unit volume vs strain and "b# damage vs strain under uniaxial tension showing the decrease in number of voids and total damage as the particle volume fraction increases[

Table 1 The stress invariant expressions under di}erent stress states

Fig[ 8[ "a# Nucleation per unit volume vs strain and "b# damage vs strain under torsion showing the increase in number of voids and total damage as the torsional constant\ a\ increases[

Fig[ 5[ "a# Nucleation per unit volume vs strain and "b# damage vs strain under uniaxial tension showing the decrease in number of voids and total damage as the coe.cient constant increases[

Fig[ 1[ The model framework encompasses the limiting cases shown by a single void growing in "a# and by damage accumulation from just nucleation in "b#[

Fig[ 7[ "a# Nucleation per unit volume vs strain and "b# damage vs strain showing the change in number of voids and total damage as the tension:compression constant\ b\ changes[