{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,12,13]],"date-time":"2024-12-13T05:22:59Z","timestamp":1734067379025,"version":"3.30.2"},"reference-count":29,"publisher":"Springer Science and Business Media LLC","issue":"1-3","license":[{"start":{"date-parts":[[2024,10,17]],"date-time":"2024-10-17T00:00:00Z","timestamp":1729123200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2024,10,17]],"date-time":"2024-10-17T00:00:00Z","timestamp":1729123200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"Commissariat \u00e0 l\u2019\u00c9nergie Atomique et aux \u00c9nergies Alternatives"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Int J Fract"],"published-print":{"date-parts":[[2024,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Fracture toughness is the material property characterizing resistance to failure. Predicting its value from the solid structure at the atomistic scale remains elusive, even in the simplest situations of brittle fracture. We report here numerical simulations of crack propagation in two-dimensional fuse networks of different periodic geometries, which are electrical analogs of bidimensional brittle crystals under antiplanar loading. Fracture energy is determined from Griffith\u2019s analysis of energy balance during crack propagation, and fracture toughness is determined from fits of the displacement fields with Williams\u2019 asymptotic solutions. Significant size dependencies are evidenced in small lattices, with fracture energy and fracture toughness both converging algebraically with system size toward well-defined material-constant values in the limit of infinite system size. The convergence speed depends on the loading conditions and is faster when the symmetry of the considered lattice increases. The material constants at infinity obey Irwin\u2019s relation and properly define the material resistance to failure. Their values are approached up to <jats:inline-formula><jats:alternatives><jats:tex-math>$$\\sim 15\\%$$<\/jats:tex-math><mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                  <mml:mrow>\n                    <mml:mo>\u223c<\/mml:mo>\n                    <mml:mn>15<\/mml:mn>\n                    <mml:mo>%<\/mml:mo>\n                  <\/mml:mrow>\n                <\/mml:math><\/jats:alternatives><\/jats:inline-formula> using the recent analytical method proposed in Nguyen and Bonamy (Phys Rev Lett 123:205503, 2019). Nevertheless, the deviation remains finite and does not vanish when the system size goes to infinity. We finally show that this deviation is a consequence of the lattice discreetness and decreases when the super-singular terms of Williams\u2019 solutions (absent in a continuum medium but present here due to lattice discreetness) are taken into account.\n<\/jats:p>","DOI":"10.1007\/s10704-024-00812-4","type":"journal-article","created":{"date-parts":[[2024,10,17]],"date-time":"2024-10-17T18:04:01Z","timestamp":1729188241000},"page":"257-273","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Size-dependency and lattice-discreetness effect on fracture toughness in 2D crystals under antiplanar loading"],"prefix":"10.1007","volume":"248","author":[{"given":"Thuy","family":"Nguyen","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daniel","family":"Bonamy","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2024,10,17]]},"reference":[{"issue":"2","key":"812_CR1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.91.025501","volume":"91","author":"N Bernstein","year":"2003","unstructured":"Bernstein N, Hess D (2003) Lattice trapping barriers to brittle fracture. 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