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Stress in planar cellular solids and isostatic granular assemblies: coarse-graining the constitutive equation

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  • Blumenfeld, Raphael

Abstract

A recent theory for stress transmission in isostatic granular and cellular systems predicts a constitutive equation that couples the stress field to the local microstructure (Phys. Rev. Lett. 88 (2002) 115505). The theory could not be applied to macroscopic systems because the constitutive equation becomes trivial upon straightforward coarse-graining. This problem is resolved here for arbitrary planar structures. The solution is based on the observation that the staggered order makes it possible to couple the stress to a reduced geometric tensor that can be coarse-grained. The method proposed here makes it possible to apply this idea to realistic systems whose staggered order is generally ‘frustrated’. This is achieved by a renormalization procedure which removes the frustration and enables the use of the upscalable reduced tensor. As an example we calculate the stress due to a defect in a periodic solid foam.

Suggested Citation

  • Blumenfeld, Raphael, 2004. "Stress in planar cellular solids and isostatic granular assemblies: coarse-graining the constitutive equation," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 336(3), pages 361-368.
    • Handle: RePEc:eee:phsmap:v:336:y:2004:i:3:p:361-368
    DOI: 10.1016/j.physa.2003.12.043
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    Cited by:

    1. Zhang, Xinggang & Dai, Dan, 2020. "Governing equations for stress distribution in rhombic disk packings," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 558(C).

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