Dynamic crack growth is simulated by implementing a cohesive zone model in the generalized interpolation material point (GIMP) method. Multiple velocity fields are used in GIMP to enable handling of discrete discontinuity on either side of the interface. Multilevel refinement is adopted in the region around the crack-tip to resolve higher strain gradients. Numerical simulations of crack growth ...

Develop a technique for the multi-scale modeling of cohesive interfaces to (1) obtain a better understanding of the micro-scale processes occurring during delamination and (2) use this knowledge to develop and quantify predictive models at the application scale. Methods The multi-scale scheme is shown in figure 3. At the macro-scale the cohesive zone (CZ) element formulation of Van den Bosch is...

We introduce the notion of time continuity for the analysis of cohesive zone interface finite element models. We focus on “initially rigid” models in which an interface is inactive until the traction across it reaches a critical level. We argue that methods in this class are time discontinuous, unless special provision is made for the opposite. Time discontinuity leads to pitfalls in numerical ...

A phase-field approach becomes a more popular candidate in modeling crack propagation. It uses scalar auxiliary variable, namely to model discontinuity zone continuity domain. Furthermore, the fourth-order produces better convergence rate and accurate solutions than second-order one. However, it is available for propagation brittle material. This study addresses combining non-standard form with...

The interface plays a critical role in the mechanical properties of composites. In present work, novel phase-field based cohesive zone model (CZM) is proposed for cracking simulation. competition and interaction between bulk interfacial are taken into consideration directly both displacement- phase-field. A family modified degradation functions utilized to describe traction-separation law CZM. ...

The fracture behavior of asphalt concrete is closely related to its internal structure. A deep understanding the relationship between structure and very important for sustainable durable pavement design. In this paper, a CZM-based FE model was developed investigate concrete. An image-aided approach used generate 3-D heterogeneous series 2-D cross sections were extracted from finite element mode...