Shear Transformation Zones: State Determined or Protocol Dependent?
| Autor: | Jacques Zylberg, Prabhat K. Jaiswal, Oleg Gendelman, Bhaskar Gupta, Itamar Procaccia |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Mechanical load
Materials science Event (relativity) Infinitesimal General Physics and Astronomy FOS: Physical sciences Mechanics Plasticity Condensed Matter - Soft Condensed Matter Amorphous solid Soft Condensed Matter (cond-mat.soft) Shear matrix State (computer science) Protocol (object-oriented programming) |
| Popis: | The concept of a Shear Transformation Zone (STZ) refers to a region in an amorphous solid that undergoes a plastic event when the material is put under an external mechanical load. An important question that had accompanied the development of the theory of plasticity in amorphous solids for many years now is whether an STZ is a {\em region} existing in the material (which can be predicted by analyzing the unloaded material), or is it an {\em event} that depends on the loading protocol (i.e., the event cannot be predicted without following the protocol itself). In this Letter we present strong evidence that the latter is the case. Infinitesimal changes of protocol result in macroscopically big jumps in the positions of plastic events, meaning that these can never be predicted from considering the unloaded material. 4 pages, 5 figures |
| Databáze: | OpenAIRE |
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