Steady-state and quasi-static rectilinear crack propagation is analyzed in porous elastoplastic solids obeying the Gurson yield condition and flow-law. Both plane strain and plane stress conditions are considered under Mode I and Mode II loading conditions. The asymptotic crack-tip fields are obtained with reference to the incremental small strain theory in the case of linear isotropic hardening behavior of the matrix material. The porosity of the material is assumed constant, therefore the elastoplastic constitutive operator results in being self-adjoint.Elastic unloading and plastic reloading on crack flanks are taken into account.
Crack propagation in porous hardening metals / Radi, Enrico; D., Bigoni. - In: INTERNATIONAL JOURNAL OF PLASTICITY. - ISSN 0749-6419. - ELETTRONICO. - 10 (7):(1994), pp. 761-793.
Crack propagation in porous hardening metals
RADI, Enrico;
1994
Abstract
Steady-state and quasi-static rectilinear crack propagation is analyzed in porous elastoplastic solids obeying the Gurson yield condition and flow-law. Both plane strain and plane stress conditions are considered under Mode I and Mode II loading conditions. The asymptotic crack-tip fields are obtained with reference to the incremental small strain theory in the case of linear isotropic hardening behavior of the matrix material. The porosity of the material is assumed constant, therefore the elastoplastic constitutive operator results in being self-adjoint.Elastic unloading and plastic reloading on crack flanks are taken into account.
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