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Evolution of polygonal crack patterns in mud when subjected to repeated wetting–drying cycles

Author

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  • Haque, Ruhul A.I.
  • Mitra, Atish J.
  • Tarafdar, Sujata
  • Dutta, Tapati

Abstract

The present paper demonstrates how a natural crack mosaic resembling a random tessellation evolves with repeated ‘wetting followed by drying’ cycles. The natural system here is a crack network in a drying colloidal material, for example, a layer of mud. A spring network model is used to simulate consecutive wetting and drying cycles in mud layers until the crack mosaic matures. The simulated results compare favourably with reported experimental findings. The evolution of these crack mosaics has been mapped as a trajectory of a 4-vector tuple in a geometry-topology domain. A phenomenological relation between energy and crack geometry as functions of time cycles is proposed based on principles of crack mechanics. We follow the crack pattern evolution to find that the pattern veers towards a Voronoi mosaic in order to minimize the system energy. Some examples of static crack mosaics in nature have also been explored to verify if nature prefers Voronoi patterns. In this context, the authors define new geometric measures of Voronoi-ness of crack mosaics to quantify how close a tessellation is to a Voronoi tessellation, or even, to a Centroidal Voronoi tessellation.

Suggested Citation

  • Haque, Ruhul A.I. & Mitra, Atish J. & Tarafdar, Sujata & Dutta, Tapati, 2023. "Evolution of polygonal crack patterns in mud when subjected to repeated wetting–drying cycles," Chaos, Solitons & Fractals, Elsevier, vol. 174(C).
  • Handle: RePEc:eee:chsofr:v:174:y:2023:i:c:s0960077923007956
    DOI: 10.1016/j.chaos.2023.113894
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    References listed on IDEAS

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    1. Sadhukhan, Supti & Dutta, Tapati & Tarafdar, Sujata, 2011. "Crack formation in composites through a spring model," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 390(4), pages 731-740.
    2. Takashi Hayashi & Richard W. Carthew, 2004. "Surface mechanics mediate pattern formation in the developing retina," Nature, Nature, vol. 431(7009), pages 647-652, October.
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