نتایج جستجو برای: shear energy

تعداد نتایج: 731928  

2016
D. Grady

The formation of adiabatic shear bands is examined with an approximate analytic model. The shear band is viewed as a propagating feature with a well-defined front. The shear band is further partition into a shear-band process zone within which most of the adiabatic heating and shear stress relaxation occurs, followed by a quasisteady zone within which little dissipation occurs. Although a one-d...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2013
Claus Heussinger

We consider the shear rheology of concentrated suspensions of non-Brownian frictional particles. The key result of our study is the emergence of a pronounced shear-thickening regime, where frictionless particles would normally undergo shear thinning. We can clarify that shear thickening in our simulations is due to enhanced energy dissipation via frictional interparticle forces. Moreover, we ev...

Journal: :Vision Research 2002
Sei-ichi Tsujimura Qasim Zaidi

A number of papers have claimed that at moderate to high contrasts, sensitivity is higher for shear motion than for uniform motion. We show in a 2 x 2AFC task, designed to minimize any potential artefacts due to criterion level or response bias, that sensitivities are essentially equal for shear and uniform motion under general conditions. It has also been claimed that position tracking enhance...

Journal: :Physical review letters 2014
Hao Liu Xiaoyi Xie Ning Xu

By finding local minima of a thermodynamic-like potential, we generate jammed packings of frictionless spheres under constant shear stress σ and obtain the yield stress σy by sampling the potential energy landscape. For three-dimensional systems with harmonic repulsion, σy satisfies the finite size scaling with the limiting scaling relation σy∼ϕ-ϕc,∞, where ϕc,∞ is the critical volume fraction ...

2014
Khandakar Niaz Morshed David Bark Jr. Marcio Forleo Lakshmi Prasad Dasi

Shear stress on blood cells and platelets transported in a turbulent flow dictates the fate and biological activity of these cells. We present a theoretical link between energy dissipation in turbulent flows to the shear stress that cells experience and show that for the case of physiological turbulent blood flow: (a) the Newtonian assumption is valid, (b) turbulent eddies are universal for the...

2016
Dawei Zhang Yuxi Zhao Weiliang Jin Tamon Ueda

In this paper, an experimental study is presented on the influence of PET warping on shear performance, such as diagonal shear cracking load, peak load, and energy dissipation of RC columns with stirrup corrosion before strengthening. The experimental program involved an electrochemical process to accelerate the migration of chlorides from an external electrolyte into the tested columns, a wett...

2015
Carl P. Goodrich Andrea J. Liu James P. Sethna

We propose a scaling ansatz for the elastic energy of a system near the critical jamming transition in terms of three relevant fields: the compressive strain ∆φ relative to the critical jammed state, the shear strain , and the inverse system size 1/N . We also use ∆Z, the number of contacts relative to the minimum required at jamming, as an underlying control parameter. Our scaling theory predi...

M Ghannad M Jabbari M Zamani Nejad,

In the present work, a study of thermoelastic analysis of a rotating thick truncated conical shell subjected to the temperature gradient and non-uniform internal pressure is carried out. The formulation is based on first-order shear deformation theory (FSDT), which accounts for the transverse shear. The governing equations, derived using minimum total potential energy principle, are solved, usi...

Abdolhamid Azizi Pooya Bahrami,

In this study accumulative roll bonding (ARB) process up to 8 Cycles (equivalent strain of 6.4) at ambient temperature was used in order to improve the mechanical properties of Commercial purity titanium (CP-Ti).Several experiment has been done and Mechanical properties of specimen has been discussed. For investigating optical microscope punching and hardness test were utilized. This is the fir...

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