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Crack‐tip Fields for Porous Solids with Pressure‐sensitive Matrices and for Rubber‐modified Epoxies by H.‐Y. Jeong; J. Pan is a Materials Science article available to read on EtoBox.

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## Abstract Based on a set of constitutive relations developed for porous solids with rate‐dependent pressure‐sensitive matrices, the stress, strain and void volume fraction distributions are investigated near the crack tip with a finite root radius under mode I, plane strain, and small‐scale yielding conditions. A rubber‐modified epoxy is taken as our model. The rubber particles are taken as the void volume fraction from the view of stress‐carrying capacity when the epoxy is subject to extensive plastic deformation. The set of constitutive relations for porous solids is based on a generalized Gurson yield criterion for porous solids with pressure‐sensitive matrices. The set of constitutive relations has been implemented into finite element code ABAQUS to investigate the near‐tip field of a crack in porous solids. Our numerical results indicate that the plastic zones, the intense straining zones, and large void volume fraction contours are long and narrow ahead of a crack tip in porous solids with moderately large initial void volume fractions. The strain softening and subsequent hardening of the matrices also make these zones more concentrated ahead of the tip. As the initial void

Who reads Crack‐tip Fields for Porous Solids with Pressure‐sensitive Matrices and for Rubber‐modified Epoxies?

Author

H.‐Y. Jeong; J. Pan

Publisher

Society for Plastic Engineers; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0032-3888)

Published

1996

Language

EN

Field

Materials Science (Physical Sciences)