The relaxation of polymers around and below their glass transition temperature is governed by a range correlated unit processes with wide timescales. fast deformation rates shock loading can negate significant fraction these resulting in the dynamical rubbers. In this letter we report inverse, transient melting glassy polymer under loading. large deviatoric stresses near front induce transition...

We report numerical results of effective attractive forces on the packing properties of two-dimensional elongated grains. In deposits of non-cohesive rods in 2D, the topology of the packing is mainly dominated by the formation of ordered structures of aligned rods. Elongated particles tend to align horizontally and the stress is mainly transmitted from top to bottom, revealing an asymmetric dis...

In this paper we review the work related to amorphization under mechanical stress. Beyond pressure, highlight role of deviatoric or shear stresses. We show that most recent works make appear as a deformation mechanism in its own right, particular extreme conditions (shocks, deformations high stresses, strain-rates).

A nonlinear theory of plasticity is proposed which facilitates the solution of a restricted class of plane strain problems. An anisotropic approximation to a real material is utilized with the characteristic directions chosen a priori. The formulation is in terms of displacements and sufficient displacement boundary conditions must be prescribed in order to solve the resulting classical wave eq...

Synchrotron x-ray imaging and stress measurements of diamond-anvil cell gaskets revealed large elastic strains at the diamond tip at a pressure of 300 gigapascals. The diamond, generally considered a rigid body, bent 16 degrees over a distance of 300 micrometers without failure. To complement these measurements, a technique was developed that permits x-ray diffraction to be measured through a b...