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shear banding

Rui Xiao's picture

Aging-dependent strain localization in amorphous glassy polymers: from necking to shear banding

This study investigates the influence of physical aging on the deformation behaviors of poly(ethylene terephthalate)-glycol. The polymers are subjected to a quenched and an annealed heat treatment, followed by deformation in tension. The digital image correlation (DIC) is used to capture the surface strain. The DIC results show that the deformation localization occurs in the post-yield strain softening region. The quenched and annealed polymers exhibit different localization types, representing as necking for quenched polymers and shear banding for annealed polymers.

Element type for modeling shear banding in 3D

Dear all,

As I am modeling shear banding phenomena in 3D, I am confused on what element type I should adopt, since there are many versions in literature. In 2D simulation, some author suggests using quadrilaterals consists of 4 cross-triangular elements, while some other use 9 node quadrilaterals. In 3D, some author use 20 noded hexahedral while some other use 8 node hexahedral with 1 integration point.

 

Eran Bouchbinder's picture

A new postdoctoral position in the mechanics of glassy/amorphous materials


A new postdoctoral position in the mechanics of glassy/amorphous materials is
available at the Weizmann Institute of Science.
The project will focus on
strongly non-linear phenomena such as cavitation, shear-banding and fracture,
with applications to Bulk Metallic Glasses,
and will involve advanced

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