Akademik Veri Yönetim Sistemi
IUTAM Symposium on Analytical and Computational Fracture Mechanics of Non-Homogeneous Materials, Cardiff, İngiltere, 18 - 22 Haziran 2001, cilt.97, ss.493-505
This paper describes an improved lattice network model to study the fracture process and size effect in the strength of plain concrete structures. The several improvements made to the lattice network model are: (i) tension softening of the matrix phase is included in the material modelling; (ii) the structural response is modelled by incrementing the deformation rather than the load. This eliminates the need for introducing arbitrary scaling parameters in the beam element failure criteria and; (iii) a square rather than a triangular lattice beam network is found to be adequate for modelling concrete, thus greatly reducing the computational time.