Abstract
In this work, the concept of a linearized damage variable is introduced within the framework of continuum damage mechanics. Instead of considering one single fictitious undamaged configuration, a number n of smaller fictitious undamaged configurations are utilized. Thus, a smaller and linearized damage variable can be defined for each individual fictitious undamaged configuration. Additionally, the equations of damage evolution are formulated with respect to each individual fictitious undamaged configuration. Some interesting and surprising results are obtained. In this regard, a new result is obtained for the strain energies with respect to the n fictitious undamaged configurations. The linearized damage variable can be used for states of damage where the damage is small. The formulation is linear elastic based on linear superposition and should be applicable to many high-cycle fatigue problems.
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Voyiadjis, G.Z., Kattan, P.I. Linearized damage mechanics for states of small damage. Acta Mech 226, 3707–3715 (2015). https://doi.org/10.1007/s00707-015-1446-8
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DOI: https://doi.org/10.1007/s00707-015-1446-8