A variational modeling framework for hydraulically induced fracturing of elastic-plastic solids is developed in the present work. The structure provides a global minimization problem. While fracture propagation modeled by means phase-field approach to fracture, plastic effects are taken into account using Drucker–Prager-type yield-criterion function. This function governs evolution fluid-solid ...

this work is an attempt towards employing ductile damage criterion and finite elementsimulations for prediction of fracture initiation and evolution in deep drawing of copper/stainlesssteel clad sheets. the material mechanical properties and ductile damage parameters weredetermined through standard and notched tensile tests. the effect of some important processparameters on damage evolution wer...

THE PRINCIPLE of maximum energy dissipation rate is introduced as an energy criterion for crack dynamics. That allows us to explain observed limiting crack speeds in brittle materials, and to complete the crack dynamics formulation. The upper limits of the crack speed in perfectly elastic and elastic-plastic bodies are obtained. It is found that the theoretical maximum crack speed in an isotrop...

The paper presents a simple and efficient method for identifying two-parametric isotropic pressure-independent yield criteria. experimental procedure includes the upsetting of three types specimens. cylinders rings is used to evaluate effect friction. Together with plane strain compression in die, these tests provide two points locus on π-plane. conjunction plasticity theory based Hosford’s cri...