Influence of particle density on 3D size effects in the fracture of (numerical) concrete Export

@article{citeulike:2482531, abstract = {In this paper, three-dimensional beam lattice models are extended and used for simulating size effects on strength of 3-point bending fracture experiments on concrete. At the meso-level concrete is schematized as a three-phase material, consisting of aggregate particles, cement matrix and the bond zone, which separates these two phases. Displacement-controlled 3-point bending experiments are simulated varying the particle density Pk (Pk = 0\%, 15\%, 35\% and 55\%) and the specimen size, which is scaled in all three dimensions in a range of 1:8 (volume range 1:512), containing between 15,703 and 7,448,373 lattice elements. The numerical analyses show particle density dependent scaling behaviour of strength. For very low (0\%) and high (55\%) particle density, scaling comes close to classical Weibull theory; for intermediate densities a significantly different power emerges caused by stable pre-critical crack growth leading to hardening.}, author = {Man, Hau-Kit and van Mier, Jan G.}, citeulike-article-id = {2482531}, citeulike-linkout-0 = {http://dx.doi.org/10.1016/j.mechmat.2007.11.003}, citeulike-linkout-1 = {http://www.sciencedirect.com/science/article/B6TX6-4R9JTPB-3/2/9c1bad25b74fa2208d9aadb2d38907d7}, doi = {10.1016/j.mechmat.2007.11.003}, journal = {Mechanics of Materials}, keywords = {gurson-type-identification}, month = {June}, number = {6}, pages = {470--486}, posted-at = {2008-03-07 08:51:06}, priority = {2}, title = {Influence of particle density on 3D size effects in the fracture of (numerical) concrete}, url = {http://dx.doi.org/10.1016/j.mechmat.2007.11.003}, volume = {40}, year = {2008} }

TY - JOUR ID - citeulike:2482531 L3 - citeulike-article-id:2482531 N2 - In this paper, three-dimensional beam lattice models are extended and used for simulating size effects on strength of 3-point bending fracture experiments on concrete. At the meso-level concrete is schematized as a three-phase material, consisting of aggregate particles, cement matrix and the bond zone, which separates these two phases. Displacement-controlled 3-point bending experiments are simulated varying the particle density Pk (Pk = 0%, 15%, 35% and 55%) and the specimen size, which is scaled in all three dimensions in a range of 1:8 (volume range 1:512), containing between 15,703 and 7,448,373 lattice elements. The numerical analyses show particle density dependent scaling behaviour of strength. For very low (0%) and high (55%) particle density, scaling comes close to classical Weibull theory; for intermediate densities a significantly different power emerges caused by stable pre-critical crack growth leading to hardening. IS - 6 JF - Mechanics of Materials EP - 486 TI - Influence of particle density on 3D size effects in the fracture of (numerical) concrete VL - 40 SP - 470 KW - gurson-type-identification AU - Man, Hau-Kit AU - van Mier, Jan PY - 2008/06// UR - http://dx.doi.org/10.1016/j.mechmat.2007.11.003 ER -