caa a22 4500 469124377 CHVBK 20180323133147.0 cr unu---uuuuu 170328e19920601xx s 000 0 eng 10.1007/BF00032512 doi (NATIONALLICENCE)springer-10.1007/BF00032512 Elastic anisotropy and micro-damage processes in polycrystalline ice Part I: Theoretical formulation [Elektronische Daten] [Mao Wu, S. Sunder] A microstructural damage model is developed for polycrystalline ice deforming at the high end of the quasi-static domain of loading. The formation (nucleation) of microcracks is attributed to the extension of grain boundary precursors under the influence of the applied stresses and microstructural stresses resulting from the elastic anisotropy mechanism. In a compressive stress field, a growing population of stable cracks leads to progressive damage in the material. Nucleation, and hence damage accumulation, is influenced by three random variables-the precursor orientation, the basal plane orientation of the grains adjoining the precursor of interest, and the grain size. Model predictions consist of the following steps: (a) computation of microstructural stresses using a first-order approximation of the Eshelby procedure, (b) analysis of nucleation using a mixed-mode fracture criterion, and (c) computation of the elastic compliance using the self-consistent method. When coupled to a creep model, the relative contribution of microcracking and creep to the total deformation can be delineated. Kluwer Academic Publishers, 1992 Wu Mao Department of Civil Engineering, Massachusetts Institute of Technology, 02139, Cambridge, Massachusetts, USA aut Sunder S. Department of Civil Engineering, Massachusetts Institute of Technology, 02139, Cambridge, Massachusetts, USA aut International Journal of Fracture Kluwer Academic Publishers 55/3(1992-06-01), 223-243 0376-9429 55:3<223 1992 55 10704 https://doi.org/10.1007/BF00032512 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00032512 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wu Mao Department of Civil Engineering, Massachusetts Institute of Technology, 02139, Cambridge, Massachusetts, USA aut NATIONALLICENCE 700 1- Sunder S. Department of Civil Engineering, Massachusetts Institute of Technology, 02139, Cambridge, Massachusetts, USA aut NATIONALLICENCE 773 0- International Journal of Fracture Kluwer Academic Publishers 55/3(1992-06-01), 223-243 0376-9429 55:3<223 1992 55 10704 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 469124377 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer