Results 221 to 230 of about 1,118,595 (265)
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1999
The mechanical properties of most materials vary with the rate of loading and this effect is particularly evident in polymers. It is usual when considering rate of loading effects in a material, rather than a structure, to quantify the loading rate in terms of a strain rate where the strain rate can conveniently be visualised as the number of times a ...
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The mechanical properties of most materials vary with the rate of loading and this effect is particularly evident in polymers. It is usual when considering rate of loading effects in a material, rather than a structure, to quantify the loading rate in terms of a strain rate where the strain rate can conveniently be visualised as the number of times a ...
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Strain rate and strain rate history effects on the dynamic behavior of metallic materials
International Journal of Solids and Structures, 1980Abstract The constitutive equations for strain hardening (f.c.c. metals and alloys) and strain softening-hardening metallic materials (b.c.c. metals and alloys) have been developed. The development is within the framework of the endochronic theory of viscoplasticity. In this discussion, the intrinsic time is dependent on the plastic strain rate. The
Wu, Han C., Yip, M. C.
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Effect of strain rate on the electroplastic effect in Nb
Scripta Metallurgica, 1989It has been found that the application of a high density electric current pulse during the plastic deformation of metals produces an enhancement of the deformation rate in addition to that caused by the side effects of the current such as Joule heating and the magnetic pinch effect. This additional effect has been termed an electroplastic effect (EPE).
Wei-di Cao, A.F. Sprecher, H. Conrad
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Effect of strain rate on transient local strain variations in articular cartilage
Journal of the Mechanical Behavior of Biomedical Materials, 2019The non-homogeneous, anisotropic material properties, and triphasic nature of articular cartilage enables diarthrodial joints to withstand large and complex physiological loading conditions. To develop biomaterials that provide similar functional properties as those found in articular cartilage, it is vital to have knowledge of the strain distributions
Amin, Komeili +3 more
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Strain Rate History Effects and Dislocation Substructure at High Strain Rates
1983A brief review is presented of strain rate history and temperature history effects during the high strain rate deformation of metals with special emphasis on the BCC metals. Possible explanations to account for history effects are reviewed. Experiments are described in which single crystals of aluminum are deformed at various strain rates. Observations
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Compressive Strain Rate Effects of Concrete
MRS Proceedings, 1985ABSTRACTSince good constitutive laws are required to model correctly the behaviour of concrete under impact loading, it is necessary to determine the complete stress-strain response of concrete at varying strain rates. Conflicting evidence emerges about whether the critical compressive strain (defined as the strain observed at maximum stress) increases
P. H. Bischoff, S. H. Perry
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Effect of Thermobaric Explosive on Strain Rate
Advanced Materials Research, 2014In order to analyze the effect of RDX-based thermobaric explosive on strain rate, the stress-strain curves with different strain rates were measured by using the Split Hopkinson Pressure Bar (SHPB) and resistive strain testing technology. The different strain rates were obtained by changing the length to diameter ratio (L/D=0.46~0.92) and speed of the ...
Ning Ning Zhao, Bo Liang Wang, Xi Li
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Strain-Rate Effects in Metals at Large Shear Strains
1983Many problems in ballistics involve very large shearing deformation occurring at high deformation rates. Such problems include, for instance, explosive formation of shaped charge jets or selfforming fragments and the defeat of thick targets by long rod penetration.
Ulric S. Lindholm, Gordon R. Johnson
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Strain Rate Effects in Porous Materials
MRS Proceedings, 1998ABSTRACTThe behavior of metal foams under rapid loading conditions is assessed. Dynamic loading experiments were conducted in our laboratory using a split Hopkinson pressure bar apparatus and a drop weight tester; strain rates ranged from 45 s−1 to 1200 s−1.
J. Lankford, K. A. Dannemann
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Effect of Strain Rate on Tensile Strength and Strain of Surgical Suture Materials
Scandinavian Journal of Plastic and Reconstructive Surgery, 1982The present work demonstrates the influence of the strain rate on the mechanical characteristics of Prolene and Ethilon loops. The testing of the loops was performed on a materials testing machine and complete load deformation curves were recorded. Various mechanical parameters were calculated and analysed by computer.
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