Results 221 to 230 of about 1,598,901 (264)
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The strain energy of cyclotetradecane is small
The Journal of Organic Chemistry, 1992Contrary to earlier reports, we show the strain energy of cyclotetradecane is both small and similar to that of other moderately sized cycloalkanes. Our finding is derived by use of semiempirical rules, MM3 molecular mechanical calculations, chemical intuition, and new measurements of head of sublimation (mean temperature=39 o C, 23.4 kcal mol -1 ...
James S. Chickos +6 more
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Mechanical anisotropy at small strains
1997The recognition that molecular orientation can produce important enhancement in the mechanical properties of polymers has long been appreciated, so it is perhaps surprising to find that detailed studies of the total mechanical anisotropy are comparatively rare.
D. W. Hadley, I. M. Ward
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2012
In the previous chapter, in the models with pressure dependent stiffness, the shear modulus G was either constant or increased with the mean effective stress. These models used to describe the pre-yielding deviatoric behaviour of soils in standard triaxial compression tests reasonably well.
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In the previous chapter, in the models with pressure dependent stiffness, the shear modulus G was either constant or increased with the mean effective stress. These models used to describe the pre-yielding deviatoric behaviour of soils in standard triaxial compression tests reasonably well.
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Anisotropy of small strain stiffness in Ticino sand
Géotechnique, 1996Comprehensive tests performed in a large calibration chamber and consisting of the propagation of seismic body waves in dry Ticino silica sand are presented. By virtue of the fact that both shear and constrained compression waves have been propagated in vertical, horizontal and oblique directions, five independent constants of the cross-anisotropic ...
Bellotti, Roberto +3 more
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Strain fields at contacts between small particles
Journal of Colloid and Interface Science, 2003Stress fields between interacting small particles ( approximately 100 nm) have been investigated by transmission electron microscopy. The background for these TEM observations is discussed in terms of adhesion stress fields (due to surface forces), the action of an applied point force, possibly magnetic, and dislocations or misfit strains due to an ...
A R, Thölén, Y, Yao
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A cell strain system for small homogeneous strain applications.
Biomedizinische Technik. Biomedical engineering, 1998A cell culture system has been developed that enables application of well characterized, homogeneously distributed cyclic strains to monolayer cell cultures. Optically clear silicone culture dishes atop Plexiglas base plates are deformed by four-point bending of flexible silicone culture wells driven in user specified strain cycle patterns using ...
M, Bottlang +4 more
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Inhomogeneous strains in small particles
Surface Science Letters, 1985Abstract This paper considers the evidence for strains in small particles. Firstly, the dynamical electron diffraction theory for dark field imaging of small particles is briefly reviewed, considering primarily the effects of strain on wedge crystals and identifying the fingerprint of strain contrast effects under strong beam conditions.
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Nonlinear Behavior of Trabecular Bone at Small Strains
Journal of Biomechanical Engineering, 2000Study of the behavior of trabecular bone at strains below 0.40 percent is of clinical and biomechanical importance. The goal of this work was to characterize, with respect to anatomic site, loading mode, and apparent density, the subtle concave downward stress–strain nonlinearity that has been observed recently for trabecular bone at these strains ...
E F, Morgan +3 more
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Large Deformations with Small Strains
1972The solution of a problem of finite deformation may require knowledge of material properties not embodied in the linear stress-relaxation moduli. Then again, it may not. In some problems of finite deformation, no material element is distorted very much even though displacements and rotations are large.
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Inelasticity of solids for small strains
Technical Physics Letters, 1999Residual (irreversible) deformations of solids were observed under very low stresses for strains e ≈10−6, which in the literature are traditionally classed in the elastic region. Inelastic deformations appeared in this range for all types of solids (mono-and polycrystals of plastic and brittle materials, amorphous solids) differing strongly in nature ...
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