English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Cracks in soft materials exhibit diverse dynamic patterns, involvingstraight, oscillation, branching, and supershear fracture. Here, wesuccessfully reproduce these crack morphologies in a two-dimensionalpre-strained fracture scenario and establish crack stability phase diagrams forthree distinct nonlinear materials using a fracture phase field model. Thecontrasting phase diagrams highlight the crucial role of nonlinearity inregulating crack dynamics. In strain-softening materials, crack branchingprevails, limiting the cracks to sub-Rayleigh states. Yet strain-stiffeningstabilizes crack propagation, allowing for the presence of supershear fracture.Of particular interest is the large-strain linear elastic materials, wherecrack oscillation is readily triggered. The onset speed of such instabilityscales linearly with the characteristic wave speed near the crack tip,supporting the notion that such crack oscillations are a universal instabilityclosely tied to the wave speed. The oscillation wavelength is shown to be abilinear function of the nonlinear scale and crack driving force, with aminimum length scale associated with the dissipative zone. Moreover, ourfindings suggest that the increase in characteristic wave speed due tostrain-stiffening can account for the observed transition of cracks fromsub-Rayleigh to supershear regimes.

Nonlinearity tunes crack dynamics in soft materials