Percolating Plastic Failure as a Mechanism for Shear Softening in Amorphous Solids

Vijayakumar Chikkadi; Oleg Gendelman; Valery Ilyin; J Ashwin; Itamar Procaccia

Percolating Plastic Failure as a Mechanism for Shear Softening in Amorphous Solids

Vijayakumar Chikkadi, Oleg Gendelman, Valery Ilyin, J Ashwin, Itamar Procaccia

Mechanical Engineering

Technion - Israel Institute of Technology

Research output: Working paper › Preprint

Abstract

``Shear softening" refers to the observed reduction in shear modulus when the stress on an amorphous solid is increased beyond the initial linear region. Careful numerical quasi-static simulations reveal an intimate relation between plastic failure and shear softening. The attaintment of the steady-state value of the shear modulus associated with plastic flow is identified with a percolation of the regions that underwent a plastic event. We present an elementary ``two-state" model that interpolates between failed and virgin regions and provides a simple and effective characterization of the shear softening.

Original language	American English
State	Published - 15 Dec 2013

Keywords

cond-mat.mtrl-sci
cond-mat.soft

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1312.4136v1

Cite this

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title = "Percolating Plastic Failure as a Mechanism for Shear Softening in Amorphous Solids",

abstract = "``Shear softening{"} refers to the observed reduction in shear modulus when the stress on an amorphous solid is increased beyond the initial linear region. Careful numerical quasi-static simulations reveal an intimate relation between plastic failure and shear softening. The attaintment of the steady-state value of the shear modulus associated with plastic flow is identified with a percolation of the regions that underwent a plastic event. We present an elementary ``two-state{"} model that interpolates between failed and virgin regions and provides a simple and effective characterization of the shear softening.",

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author = "Vijayakumar Chikkadi and Oleg Gendelman and Valery Ilyin and J Ashwin and Itamar Procaccia",

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T1 - Percolating Plastic Failure as a Mechanism for Shear Softening in Amorphous Solids

AU - Chikkadi, Vijayakumar

AU - Gendelman, Oleg

AU - Ilyin, Valery

AU - Ashwin, J

AU - Procaccia, Itamar

PY - 2013/12/15

Y1 - 2013/12/15

N2 - ``Shear softening" refers to the observed reduction in shear modulus when the stress on an amorphous solid is increased beyond the initial linear region. Careful numerical quasi-static simulations reveal an intimate relation between plastic failure and shear softening. The attaintment of the steady-state value of the shear modulus associated with plastic flow is identified with a percolation of the regions that underwent a plastic event. We present an elementary ``two-state" model that interpolates between failed and virgin regions and provides a simple and effective characterization of the shear softening.

AB - ``Shear softening" refers to the observed reduction in shear modulus when the stress on an amorphous solid is increased beyond the initial linear region. Careful numerical quasi-static simulations reveal an intimate relation between plastic failure and shear softening. The attaintment of the steady-state value of the shear modulus associated with plastic flow is identified with a percolation of the regions that underwent a plastic event. We present an elementary ``two-state" model that interpolates between failed and virgin regions and provides a simple and effective characterization of the shear softening.

KW - cond-mat.mtrl-sci

KW - cond-mat.soft

M3 - Preprint

BT - Percolating Plastic Failure as a Mechanism for Shear Softening in Amorphous Solids

ER -

Percolating Plastic Failure as a Mechanism for Shear Softening in Amorphous Solids

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Keywords

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