Mixed mode fracture of cementitious bimaterial interfaces; Part II: Numerical simulation

摘要

On the basis of experimental investigations carried out on large scale simulated rock/concrete interfaces, fracture properties are extracted from a finite element analysis. G{sub}c and G{sub}F are extracted from linear elastic fracture mechanics(LEFM) and nonlinear fracture mechanics (NLFM) respectively.It is shown that the fracture energy G{sub}c for bimaterial interfaces remains constant as long as the crack lies within the interface, and an accurate crack profile is obtained from the NLFM analysis.