نتایج جستجو برای: static strain aging
تعداد نتایج: 425742 فیلتر نتایج به سال:
In this work, dynamic mechanical properties of three high-manganese steels with TRIP/TWIP or fully TWIP characteristics are studied. High strain rate experiments in the range of true strain rates between ~500 and 1800 /s are conducted using a dynamic torsional testing setup. All the three steels show a positive strain rate sensitivity in the intermediate range of strain rates (up to 500 /s). Bu...
Mechanics of CNT-reinforced nano-cellular PMMA nanocomposites are investigated using coarse-grained molecular dynamics simulations. Firstly, static uniaxial stretching of bulk PMMA polymer is simulated and the results are compared with literature. Then, nano-cellular foams with different relative densities are constructed and subjected to static uniaxial stretching and obtained stress-strain cu...
Recently developed thermally hardenable medium-level alloyed titanium alloy T110 was studied from the viewpoint of microstructure influence on mechanical behavior under quasi-static and high-strain rate deformation. The globular microstructures two types differing in aspect ratio α-globules were formed thermomechanical processing conditions with different reductions (εtotal = 2, 3) final anneal...
Purpose: Static balance decrease with aging. Exercise program has significant effects on improving balance. However, the most effective method on improving balance in elderly remains undiscovered. Therefore, the present study investigated the effect of training on the stable and unstable surfaces on the static balance in elderly. Methods: This was a clinical randomized trial with a pre-test p...
BACKGROUND Aging is accompanied by an alteration in myocardial contractility. However, its noninvasive detection is difficult. The effect of chronic exercise on this decrease is unknown. Murine models of senescence are increasingly used to test therapies in aging. We tested whether strain rate imaging detected left ventricular (LV) systolic dysfunction in aging mice and was able to assess a pot...
In this research, the bending analysis of rectangular nanoplates subjected to mechanical loading is investigated. For this purpose, the strain gradient elasticity theory with one gradient parameter is presented to study the nanoplates. From the best knowledge of authors, it is the first time that the exponential shear deformation formulation based on strain gradient elasticity theory is carried...
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