Journal
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
Volume 117, Issue -, Pages 80-90Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijsolstr.2017.04.002
Keywords
Brittle damage; Damage anisotropy; Distinct tensile and compressive damage behavior; Damage deactivation; Plasticity
Categories
Funding
- US AFOSR Multiscale Structural Mechanics and Prognosis Program
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The objective of this paper is to develop a constitutive model for damageable brittle and quasi-brittle materials. A damage model, which can handle damage anisotropy, distinct tensile and compressive damage behavior, and damage deactivation simultaneously, is developed. A general expression for the effective continuum tangent operator is derived based on the effective space plasticity hypothesis. A closed-form expression for the apparent continuum tangent operator is subsequently derived. The versatility of the present model is demonstrated through modeling several different materials. The present model is found to be capable of handling various mechanical behaviors, complex loading conditions, and complex loading paths. It is also found to be capable of facilitating the calibration of its associated material parameters from experimental data. A wide variety of mechanical behaviors can be incorporated into the present model in the future. (C) 2017 Elsevier Ltd. All rights reserved.
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