Multiscale Computational Modeling of Brittle and Ductile Materials under Dynamic Loading

The computational homogenization method enables to derive the overall behavior of heterogeneous materials from their local-scale response. In this method, a representative volume element (RVE) is assigned to a macroscopic material point and the constitutive law for the macroscopic model at that point is obtained by solving a boundary value...

Modeling fracture in quasi-brittle materials under high frequency loading using a multi-scale method (poster)

Macroscopic behavior of quasi-brittle materials is determined by their heterogeneous microstructure. Initiation and propagation of cracks are controlled by the randomness of the material and occur at different length scales (figure 1). Multi-scale approaches provide methodologies to obtain the mechanical behavior of a heterogeneous material from...

A rate-dependent multi-scale crack model for concrete

A multi-scale numerical approach for modeling cracking in heterogeneous quasi-brittle materials under dynamic loading is presented. In the model, a discontinuous crack model is used at macro-scale to simulate fracture and a gradient-enhanced damage model has been used at meso-scale to simulate diffuse damage. The traction-separation law for the...

A two-scale rate dependent crack model for quasi-brittle materials under dynamic loading