The role of temperature in the rigidity-controlled fracture of elastic networks

We study the influence of thermal fluctuations on the fracture of elastic networks, via simulations of the uniaxial extension of central-force spring networks with varying rigidity. Studying their failure response, both at the macroscopic and microscopic level, we find that an increase in temperature corresponds to a more homogeneous stress (re)distribution and induces thermally activated failure of springs. As a consequence, the material strength decreases upon increasing temperature, the microscopic damage spreads over a larger area and a more ductile fracture process is observed. These effects are modulated by network rigidity and can therefore be tuned via the network connectivity and the rupture threshold of the springs. Knowledge of the interplay between temperature and rigidity improves our understanding of the fracture of elastic network materials, such as (biological) polymer networks, and can help to refine design principles for tough soft materials.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:16

Enthalten in:

Soft matter - 16(2020), 43 vom: 21. Nov., Seite 9975-9985

Sprache:

Englisch

Beteiligte Personen:

Tauber, Justin [VerfasserIn]
Kok, Aimée R [VerfasserIn]
van der Gucht, Jasper [VerfasserIn]
Dussi, Simone [VerfasserIn]

Links:

Volltext

Themen:

Journal Article

Anmerkungen:

Date Revised 12.11.2020

published: Print-Electronic

Citation Status PubMed-not-MEDLINE

doi:

10.1039/d0sm01063d

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM316046167