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Examples of load-carrying networks. (A) Detail of the beam network structure of the Eiffel tower. (B) Additively manufactured metamaterial (acoustic band gap material; for details see ref. 7). (C) Force chain network in a granular material. Reprinted with permission from ref. 1. (D) Propagating crack in a random fuse model of a disordered material; color scale indicates the local stress level [for details see Moretti et al. (15)].
