2016/11/19 by Huu Phuoc Bui, Bui, Huu Phuoc, Vincent Richefeu +3
Computer Science · Engineering · Materials Science · #Advanced materials and composites #Industrial Engineering and Technologies #Material Properties and Applications #cs.CE
paper · pdf · doi:10.48550/arxiv.1611.06396
16 pages, 21 figures
arxiv created 2016/11/19 · arxiv updated 2016/11/22
Unlike nonlocal models, there is no need to introduce an internal length in the constitutive law for lattice model at the mesoscopic scale. Actually, the internal length is not explicitly introduced but rather governed by the mesostructure characteristics themselves. The influence of the mesostructure on the width of the fracture process zone which is assumed to be correlated to the characteristic length of the homogenized quasi-brittle material is studied. The influence of the ligament size (a structural parameter) is also investigated. This analysis provides recommendations/warnings when extracting an internal length required for nonlocal damage models from the material mesostructure