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Application of Relaxation Techniques to Nonconvex Isotropic Damage Model
Author(s) -
Gürses Ercan,
Lambrecht Matthias,
NaMiehechname Christian
Publication year - 2003
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200310385
Subject(s) - isotropy , relaxation (psychology) , microstructure , instability , materials science , statistical physics , mechanics , composite material , physics , optics , psychology , social psychology
A new energy relaxation technique for nonconvex inelasticity is applied to an isotropic damage model. The increasing damage yields nonconvex incremental potentials indicating the instability of the material and the development of finescale microstructures. The microstructures are resolved as first‐order laminates by convexifiaction techniques.