Nonuniform and localized deformation in single crystals under dynamic tensile loading

Crack propagation behaviors at a mortar-aggregate interface in concrete under dynamic tensile loading conditions are investigated numerically. It is found, for a certain interfacial strength and aggregate size, that the crack can penetrate through the interface under an external load with its loading-rate higher than a threshold value. Moreover, for the crack penetration, the smaller the radius of an aggregate, the higher the loading-rate is needed. Therefore, concrete failure energy increase considerably with the loading-rate (or the strain-rate). Such a strain-rate effect on the strength of concrete is in agreement with previous experimental results.

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Temperature and Pressure Dependences of the Elastic Properties of Tantalum Single Crystals Under Tensile Loading: A Molecular Dynamics Study

Nanoscale Research Letters ◽

10.1186/s11671-018-2526-1 ◽

2018 ◽

Vol 13 (1) ◽

Cited By ~ 4

Author(s):

Wei-bing Li ◽

Kang Li ◽

Kang-qi Fan ◽

Da-xing Zhang ◽

Wei-dong Wang

Keyword(s):

Molecular Dynamics ◽

Single Crystals ◽

Elastic Properties ◽

Tensile Loading ◽

Temperature And Pressure

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The response of masonry joints to dynamic tensile loading

Materials and Structures ◽

10.1617/s11527-006-9160-6 ◽

2006 ◽

Vol 40 (5) ◽

pp. 517-527 ◽

Cited By ~ 14

Author(s):

S. Burnett ◽

M. Gilbert ◽

T. Molyneaux ◽

A. Tyas ◽

B. Hobbs ◽

...

Keyword(s):

Tensile Loading ◽

Dynamic Tensile Loading

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Stochastic fracture of ceramics under dynamic tensile loading

International Journal of Solids and Structures ◽

10.1016/j.ijsolstr.2004.05.029 ◽

2004 ◽

Vol 41 (22-23) ◽

pp. 6573-6596 ◽

Cited By ~ 64

Author(s):

Fenghua Zhou ◽

Jean-Francois Molinari

Keyword(s):

Tensile Loading ◽

Dynamic Tensile Loading

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Flow-Independent Viscoelastic Response of Bovine Articular Cartilage Under Dynamic Tensile Loading

Advances in Bioengineering ◽

10.1115/imece2004-59367 ◽

2004 ◽

Author(s):

Seonghun Park ◽

Gerard A. Ateshian

Keyword(s):

Articular Cartilage ◽

Hysteresis Loop ◽

Applied Stress ◽

Mechanical Response ◽

Tensile Modulus ◽

Tensile Loading ◽

Viscoelastic Response ◽

Bovine Articular Cartilage ◽

Theoretical Predictions ◽

Dynamic Tensile Loading

The objective of the current study was to characterize the mechanical response of bovine articular cartilage under dynamic tensile loading. Testing was performed under an applied stress magnitude of 1.3 MPa and frequencies from 10−4 Hz to 10 Hz. The dynamic tensile modulus ranged from 20.1±7.0 MPa at 10−4 Hz to 64.0±9.7 MPa at 10 Hz. The phase angle derived from the area under the stress-strain hysteresis loop changed from 21.4±6.9° at 10−4 Hz to 1.1±0.2° at 10 Hz. Based on earlier theoretical predictions, the observed viscoelastic response in tension may be attributed to the intrinsic viscoelasticity of the collagen-proteoglycan matrix.

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Derivation of Polycrystal Creep Properties From the Creep Data of Single Crystals

Journal of Applied Mechanics ◽

10.1115/1.3424017 ◽

1977 ◽

Vol 44 (1) ◽

pp. 73-78 ◽

Cited By ~ 6

Author(s):

T. H. Lin ◽

C. L. Yu ◽

G. J. Weng

Keyword(s):

Single Crystals ◽

Creep Deformation ◽

Tensile Loading ◽

Present Theory ◽

Sole Source ◽

Stress And Strain ◽

Creep Data ◽

Stress Strain ◽

Macroscopic Stress ◽

Additional Constant

A method developed for calculating the polycrystal stress-strain-time relation from the creep data of single crystals is shown. Slip is considered to be the sole source of creep deformation. This method satisfies, throughout the aggregate, both the condition of equilibrium and that of continuity of displacement as well as the creep characteristics of single crystals. A very large three-dimensional region is assumed to be filled with innumerable identical cubic blocks, each of which consists of 64 cube-shaped crystals of different orientations. This region is assumed to be embedded in an infinite elastic isotropic medium. This infinite medium is subject to a uniform loading. The average stress and strain of a cubic block at the center of the region is taken to represent the macroscopic stress and strain of the polycrystal. This method is self-consistent and considers the heterogeneous interaction effect of the creep deformation of all slid crystals. The macroscopic stress-strain-time relations of the polycrystal were calculated for three tensile loadings, one radial loading, and two nonradial loadings of combined tension and torsion. The numerical results given by the present theory agree well with those predicted by the so-called “Mechanical Equation of State.” The creep strain components calculated by the present theory for the case of a constant tensile loading followed by an additional constant tensile loading are found to be considerably higher than those predicted by von Mises and Tresca’s theories. These results agree well qualitatively with experimental results.

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