high strain rates
The dynamic Virtual Fields Method on rubbers at medium and high strain rates
... at high strain rates due to their viscoelastic characteristics ...included high speed experiments on rubbers in compression and tension using the split Hopkinson bars [2–4] and newly developed ...
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The Mechanical Properties and the Influence of Parameters for Metallic Closed-Cell Foam Subjected to High-Strain Rates
... Abstract. As the trend for lighter more efficient structures continues, the requirement for alternative materials follows. One material that has gained attention more recently is porous metallic foam. One drawback to ...
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Experimental characterization of dynamic deformation behaviour for SCM440 steel at high strain rates
... the high strain rates, the true strain rate and temperature rise during the plastic deformation due to adiabatic heating effects were ...ultra-high strain rates and ...
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Challenges related to testing of composite materials at high strain rates using the split Hopkinson bar technique
... at high strain rates using the split Hopkinson bar ...at high strain rates using the split Hopkinson bar ...the strain fields within the gauge section at quasi-static and ...
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Inverse methods for the mechanical characterization of materials at high strain rates
... at high strain rates making this procedure ideal for the development of accurate material models used in numerical simulations of dynamic and impact ...
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Influence of High Strain Rates on the Mechanical Behavior of High-Manganese Steels
... In this equation, , is the Taylor-Quinney parameter, , is the density and C p , is the specific heat capacity of the tested material. The values of adiabatic temperature rise were calculated for the three steels ...
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Flat Cavities formed in TZP caused by Superplastic Deformations at High Strain Rates and Their Effect on Elongation
... at high strain-rates or at low ...so high that grain boundaries existing among the small conventional cavities mostly normal to the stress axis would be relatively easy to separate under the ...
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Effects of microstructure on the dynamic strain aging of ferriticpearlitic steels at high strain rates
... intermediate strain rates, thermally activated dislocations motion is controlling the plastic deformation of ...At high strain rates, viscous drag becomes the dominant resisting ...
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Determination of Tensile Properties of Polymers at High Strain Rates
... of high rate testing of polymers the measured properties are highly dependent on the applied ...at high strain ...a high speed camera was used to characterize the local material ...nominal ...
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A rate-dependent Hosford-Coulomb model for predicting ductile fracture at high strain rates
... Recent research on ductile fracture has clearly demon- strated that the effect of the Lode parameter is as important as that of the stress triaxiality. For example, the drastic loss in ductility of metals when changing ...
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Evolution of the martensitic transformation in shape memory alloys under high strain rates
... In order to show more clearly the growing rate of transformed region, space-time figures are plot- ted. Such a space-time figure is given in figure 4(a). It is obtained as the time-evolution of the mean longitudinal ...
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Experimentation and Numerical Simulation of Mechanical Shock Absorbing Technique at High Strain Rates using Autodyn
... for high speed crafts, His study was limited to a shock of 10G for 30 to ...and high frequency shocks Sean ...on high speed boats. Shkolnikov [9] studied the strain rates and its effect ...
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Measurement of fracture energy of concrete at high strain rates
... to high velocity impacts, initial compression pulses travel through the material leading to tensile stresses when they reach a free ...different strain rates are ...
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Experimental methodology for the measurement of plasticity on metals at high strain-rates
... and strain by applying Bridgman theory ...at high strain-rate an in-situ high speed shadowgraph technique has been developed, and to obtain better results from the images a sub-pixel accuracy ...
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Grain Refinement in a Mg AZ91 Alloy via Large Strain Hot Rolling
... Although it is well known that wrought Mg alloys have better mechanical properties than cast alloys, most parts are currently formed by die-casting. 2) This is due to the low ductility of Mg alloys, which is intimately ...
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On the Significance of Welded Joints in Ferritic Structures (G287)
... higher strain rates and corresponding high stresses, while diffusion flow is necessary to retard the evolution of local stress peaks and the initiation of intercrystalline fracture to higher GBS ...
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Effect of strain rates on tensile properties and fracture toughness determination of extruded Mg Al Zn alloys
... at high strain rates and low strain rates for AZ31 magnesium alloy because the CRSS of the non-basal slip decreased with increasing ...
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The Mechanics of the Predatory Strike of the Praying Mantid Heirodula Membranacea
... With the exception of the tibial flexor muscle, for which very high strain rates were obtained, the calculated peak values of stress, strain rate and power output lie within the range ob[r] ...
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Tresca criterion for plasticity and viscoplasticity: Application to localization in biaxial loading conditions
... The capacity of the Tresca criterion with both elasto- plastic and viscoplastic constitutive models to reproduce localization in biaxial stretching and high strain rates loading conditions was ...
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Synthesis and Characterization of Ultrafine Grained 304 Stainless Steel through Machining
... Machining is a typical deformation process involving large strain and high-strain-rates. The microstructures and the mechanical properties of the machined chips are directly related to the ...
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