Simulation of Multiscale Time and Space in Fracture Process of Three-Point-Bending Concrete Beam with Offset Notch
In order to accurately analyze the dynamic damage process of three-point-bending concrete beam with offset notch, the multiscale numerical model of time and space by coupling Discrete Element Method (DEM) and Finite Element Method (FEM) of three-point-bending concrete beam with offset notch was established. Using the multiscale numerical model of three-point-bending concrete beam, the generating and the extending processes and rules of cracks in concrete beam under condition of different offset distances of notch were analyzed at macro- and meso-levels. The simulated results are in accordant with the experimental ones. Comparing the computation time of the multiscale model and that of the DEM model in the example of three-point-bending concrete beam, the former accomplished the heterogeneous mesoscopic simulations of the latter, at the same time, the former was much more efficient than the latter.
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
R. Zhang and Z. P. Tang, "Simulation of Multiscale Time and Space in Fracture Process of Three-Point-Bending Concrete Beam with Offset Notch", Advanced Materials Research, Vols. 189-193, pp. 2300-2305, 2011