2021/02/21 by Pei‐Liang Bian, Peiliang Bian, Bian, Peiliang +2
Engineering · Physics and Astronomy · #Fatigue and fracture mechanics #Fluid Dynamics Simulations and Interactions #Numerical methods in engineering #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.2102.10516
27 pages, 18 figures
arxiv created 2021/02/21 · arxiv updated 2021/02/23
The interface plays a critical role in the mechanical properties of composites. In the present work, a novel phase-field based cohesive zone model (CZM) is proposed for the cracking simulation. The competition and interaction between the bulk and interfacial cracking are taken into consideration directly in both displacement- and phase-field. A modified family of degradation functions is utilized to describe traction-separation law in the CZM. Finite element implementation of the present CZM was carried out with a completely staggered algorithm. Several numerical examples, including a single bar tension test, a double cantilever beam test, a three-point bending test, and a single fiber-reinforced composite test, are carried out to validate the present model by comparison with existing numerical and experimental results.The present model shows its advantage on modeling interaction between bulk and interfacial cracking. 1. Introduction