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Heussinger, Claus and Frey, Erwin (September 2006): Floppy modes and nonaffine deformations in random fiber networks. In: Physical Review Letters, Vol. 97, No. 10: pp. 105501-1 [PDF, 174kB]


We study the elasticity of random fiber networks. Starting from a microscopic picture of the nonaffine deformation fields, we calculate the macroscopic elastic moduli both in a scaling theory and a self-consistent effective medium theory. By relating nonaffinity to the low-energy excitations of the network ("floppy modes"), we achieve a detailed characterization of the nonaffine deformations present in fibrous networks.

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