Structure-property relationships from universal signatures of plasticity in disordered solids

When deformed beyond their elastic limits, crystalline solids flow plastically via particle rearrangements localized around structural defects. Disordered solids also flow, but without obvious structural defects. We link structure to plasticity in disordered solids via a microscopic structural quant...

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Bibliographic Details
Published in:	Science (American Association for the Advancement of Science) Vol. 358; no. 6366; pp. 1033 - 1037
Main Authors:	Cubuk, E. D., Ivancic, R. J. S., Schoenholz, S. S., Strickland, D. J., Basu, A., Davidson, Z. S., Fontaine, J., Hor, J. L., Huang, Y.-R., Jiang, Y., Keim, N. C., Koshigan, K. D., Lefever, J. A., Liu, T., Ma, X.-G., Magagnosc, D. J., Morrow, E., Ortiz, C. P., Rieser, J. M., Shavit, A., Still, T., Xu, Y., Zhang, Y., Nordstrom, K. N., Arratia, P. E., Carpick, R. W., Durian, D. J., Fakhraai, Z., Jerolmack, D. J., Lee, Daeyeon, Li, Ju, Riggleman, R., Turner, K. T., Yodh, A. G., Gianola, D. S., Liu, Andrea J.
Format:	Journal Article
Language:	English
Published:	United States American Association for the Advancement of Science 24-11-2017 The American Association for the Advancement of Science
Subjects:	Atomic structure Behavioral plasticity Commonality Computer simulation Correlation analysis Crystal defects Defects Elastic deformation Elastic limit Learning algorithms Long range order Machine learning Mechanical properties Modulus of elasticity Plastic properties Plasticity Softness Solids Solids flow Strain
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Summary:	When deformed beyond their elastic limits, crystalline solids flow plastically via particle rearrangements localized around structural defects. Disordered solids also flow, but without obvious structural defects. We link structure to plasticity in disordered solids via a microscopic structural quantity, “softness,” designed by machine learning to be maximally predictive of rearrangements. Experimental results and computations enabled us to measure the spatial correlations and strain response of softness, as well as two measures of plasticity: the size of rearrangements and the yield strain. All four quantities maintained remarkable commonality in their values for disordered packings of objects ranging from atoms to grains, spanning seven orders of magnitude in diameter and 13 orders of magnitude in elastic modulus. These commonalities link the spatial correlations and strain response of softness to rearrangement size and yield strain, respectively.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 These authors contributed equally to this work.
ISSN:	0036-8075 1095-9203
DOI:	10.1126/science.aai8830