Nonlinear-elastic behavior and effective parameters of materials containing pores and slit-like defects
Key Points
The model demonstrates nonlinear-elastic behavior in materials that contain pores and slit-like defects.
Effective characteristics are derived by analyzing the relationship between defects and macroscopic material parameters.
Computational micromechanics methods establish the link between defects and material morphology.
The model incorporates elastic dilatancy and aligns with the established Cam-Clay condition in its limiting state.
Abstract
A nonlinear-elastic isotropic model is formulated and effective characteristics of the material containing defects in the form of cracks and pores are determined. The expression for deformation specific energy, which is the second degree homogeneous function with respect to the invariants of the deformation tensor forms the model base. The relationship between the macroscopic parameters of the model, the content of defects and the morphology of the material is established by the methods of computational micromechanics. The model allows taking into account elastic dilatancy, and its limiting state corresponds to the Cam–Clay condition.
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