Available online 6 November 2024 (click here)

Background: Time-dependent deformation and damage in viscoelastic materials exhibit distinct characteristics compared to purely brittle or ductile materials, especially under large deformations. These behaviours become even more complex in the presence of pre-cracks. To model this process, we propose an improved non-ordinary state-based peridynamics (NOSB-PD) with implicit adaptive time-stepping (IATS).

Highlights:

Propose an improved NOSB-PD integrated with a stabilized bond-associated scheme.

Incorporate a hyper-viscoelastic constitutive model combined with a damage model into the peridynamic framework.

Develop a novel IATS method for efficient simulation of time-dependent behaviour.

Explore the effects of crack patterns and material properties on damage evolution, offering key insights into the underlying mechanisms.