Results 251 to 260 of about 28,768 (295)

Stress-strain hysteresis and damping in MnCu and NiTi alloys

Metallurgical and Materials Transactions A, 2001
Uniaxial stress-strain hysteresis loops for high damping manganese-copper (MnCu) and nickel-titanium (NiTi) shape memory alloys are experimentally determined. The characterization concerns two MnCu samples, one containing 60 pct Mn, the other 40 pct Mn, and two NiTi samples, one in the martensitic phase and the other in the austenitic phase at room ...
S. De Santis, F. Trochu, G. Ostiguy
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Simple shear, hysteresis and yield stress in biofluids

The Canadian Journal of Chemical Engineering, 2001
AbstractBiofluids such as blood, as well as other structured materials, exhibit rather complex rheological behaviour. In this paper, starting from a first‐order kinetic model, we developed a constitutive equation and studied its applicability to model biofluids.
Ning Sun And, Daniel De Kee
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The effects of stress on a ferromagnet on a minor hysteresis loop

IEEE Transactions on Magnetics, 1990
Reversible and irreversible changes in magnetization due to stress on a minor hysteresis loop were studied at various magnetic field strengths. It was found that the irreversible changes were not always directed toward the principal anhysteretic, contrary to Jiles and Atherton's hypothesis (1986).
D.L. Atherton, V. Ton
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Residual stresses and vector hysteresis modeling

Physica B: Condensed Matter, 2016
Abstract Residual stresses in magnetic materials, whether the result of processing or intentional loading, leave their footprint on macroscopic data, such hysteresis loops and differential permeability measurements. A Preisach-type vector model is used to reproduce the phenomenology observed based on assumptions deduced from the data: internal ...
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Influence of stresses on the hysteresis curve in constructional steel

IEEE Transactions on Magnetics, 1984
The effect of plastic deformation on the hysteresis curves of constructional steel has been studied. A theoretical model is discussed which describes the magnetization curves using damping coefficients and parameters characterizing domain interactions. An analytical relationship between initial susceptibility and the parameters of the model was derived.
B. Szpunar, J. Szpunar
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Stressed ferrites having rectangular hysteresis loops

Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics, 1953
A study has been made of the effect of stress on the magnetic properties of ferrites. Rectangular hysteresis loops were obtained by encasing toroidal specimens in plasties which shrink during polymerization. Ferrites having this type of hysteresis loop are useful in magnetic switching and magnetic memory devices.
H. J. Williams, R. C. Sherwood, Matilda Goertz, F. J. Schnettler   +3 more
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Thermal Stresses, Relaxation, and Hysteresis in Glass

Journal of the American Ceramic Society, 1993
The theory of A. R. Cooper, Jr., and other viscoelastic theories of thermal stresses in glass are reviewed. The role of structural relaxation in the evolution of the free strain and stress relaxation times is examined. An explanation of the hysteresis loop observed on thermal contraction/expansion curves in the glass transition region is offered ...
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Stress hysteresis as the cause of persistent holes in particulate suspensions

Physical Review E, 2010
Concentrated particulate suspensions under vibrations can support stable, localized, vertically oriented free surfaces. The most robust of these structures are persistent holes: deep and stable depressions of the interface. Using a reduced model of the hydrodynamics we show that a rheology with hysteresis can lead to motion opposite to the time ...
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Vector model for the study of hysteresis under stress

Journal of Applied Physics, 2000
A vector model of magnetic hysteresis in biaxial anisotropy structures is presented, in which magnetoelastic effects are explicitly taken into account. The magnetization vector of individual grains is forced to lie along one of the easy axis, and jumps from one easy direction to another one controlled by the sum of the external field and magnetoelastic
SASSO, CARLO PAOLO, BASSO, VITTORIO, M. LOBUE, G. BERTOTTI   +3 more
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Hysteresis of the stress–strain dependences in Hooke’s region

Materials Science, 2009
A procedure is proposed for the construction [with high accuracy (∼ 0.02%)] of the stress–strain diagrams for specimens corresponding to a model of restrained circular plate. On the basis of these diagrams for 40Kh steel, it is shown that the phenomenon of hysteresis, the nonlinearity of the dependence of the amplitude of hysteresis on the mechanical ...
B. H. Mytsyk, N. M. Dem’yanyshyn
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