نتایج جستجو برای: shear strain shape function

تعداد نتایج: 1627648  

Journal: :Physical review. E 2017
Meng Fan Minglei Wang Kai Zhang Yanhui Liu Jan Schroers Mark D Shattuck Corey S O'Hern

Amorphous solids, such as metallic, polymeric, and colloidal glasses, display complex spatiotemporal response to applied deformations. In contrast to crystalline solids, during loading, amorphous solids exhibit a smooth crossover from elastic response to plastic flow. In this study, we investigate the mechanical response of binary Lennard-Jones glasses to athermal, quasistatic pure shear as a f...

Journal: :Journal of Fluid Mechanics 2021

We investigate the rheology of strain-hardening spherical capsules, from dilute to concentrated regime under a confined shear flow using three-dimensional numerical simulations. consider effect capillary number, volume fraction and membrane inextensibility on particle deformation effective suspension viscosity normal stress differences suspension. The displays shear-thinning behaviour which is ...

Journal: :journal of applied and computational mechanics 0
bekir akgöz akdeniz university civil eng. dept. ömer civalek civil engineering dept.

deflection analysis of a simply supported microbeam subjected to a concentrated load at the middle is investigated on the basis of a shear deformable beam theory and non-classical theory. effects of shear deformation and small size are taken into consideration by hyperbolic shear deformable beam theory and modified strain gradient theory, respectively. the governing differential equations and c...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2015
Duc-Hanh Nguyen Emilien Azéma Philippe Sornay Farhang Radjai

By means of extensive contact dynamics simulations, we analyze the combined effects of polydispersity both in particle size and in particle shape, defined as the degree of shape irregularity, on the shear strength and microstructure of sheared granular materials composed of pentagonal particles. We find that the shear strength is independent of the size span, but unexpectedly, it declines with ...

Failure modes in recent earthquakes on lightly reinforced shear walls includes rebar fracture and out of plane buckling of its boundary elements. In latest edition of ACI 318 and also latest amendment of NZS 3101-2006 to avoid rebar fracture in boundary elements, the minimum reinforcement ratio for shear walls is increased. This experimental study investigates that rather than increasing reinfo...

2017
Ilka Weikusat Daniela Jansen Tobias Binder Jan Eichler Sérgio H Faria Frank Wilhelms Sepp Kipfstuhl Simon Sheldon Heinrich Miller Dorthe Dahl-Jensen Thomas Kleiner

Microstructures from deep ice cores reflect the dynamic conditions of the drill location as well as the thermodynamic history of the drill site and catchment area in great detail. Ice core parameters (crystal lattice-preferred orientation (LPO), grain size, grain shape), mesostructures (visual stratigraphy) as well as borehole deformation were measured in a deep ice core drilled at Kohnen Stati...

Journal: :iranian journal of mechanical engineering transactions of the isme 2013
b. fereidoonnezhad j. arghavani r. naghdabadi

biomechanical properties of soft tissue, such as liver, are important in modeling computer aided surgical procedures. experimental evidences show that liver tissue is transversely isotropic. in this article, considering the liver tissue as an incompressible fiber-reinforced composite with one family of fibers, an exponential strain energy function (sef) is proposed. the proposed sef is based on...

2007
Toshio Sakuma Akihiko Suzuki

The superelastic behavior of coil springs of a Ti-Ni shape memory alloy was investigated using loading-unloading cycling tests under isothemal temperatures. The effects of the Ni content and shape memory treatment temperatures on the cyclic behavior in the superelastic deformation were investigated. The deformation behavior within the elastic region of the parent phase scarcely changes during t...

Journal: :Extreme Mechanics Letters 2021

Uniaxial and biaxial strain approaches are usually implemented to switch the ferroelastic states, which play a key role in application of ferroics shape memory materials. In this work, by using first-principles calculations, we found not only uniaxial strain, but also shear can induce novel switching, van der Waals (vdW) layered direction rotates with transition bulk PdSe2. The induces switchin...

1991
Athanasios E. Tzavaras

Shear instabilities in the form of shear bands are often observed during high speed, plastic deformations of metals. According to one theory, their formation is attributed to eeective strain-softening response, which results, at high strain rates, as the net outcome of the innuence of thermal softening on the, normally, strain-hardening response of metals. In order to test the core instability ...

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