نتایج جستجو برای: cumulative ductility demand
تعداد نتایج: 220919 فیلتر نتایج به سال:
DEMAND SPECTRA OF YIELDING STRENGTH AND DUCTILITY FACTOR FOR REQUIRED SEISMIC PERFORMANCE OBJECTIVES
In this study, constant-ductility optimization algorithm under a family of earthquake ground motions is utilized to achieve uniform damage distribution over the height of steel moment resisting frames (SMRFs). SMRF structures with stiffness-degrading hysteric behavior are modeled as single-bay generic frame in which the plastic hinge is confined only at the beam ends and the bottom of the first...
Amorphous solids, such as metallic, polymeric, and colloidal glasses, display complex spatiotemporal response to applied deformations. In contrast to crystalline solids, during loading, amorphous solids exhibit a smooth crossover from elastic response to plastic flow. In this study, we investigate the mechanical response of binary Lennard-Jones glasses to athermal, quasistatic pure shear as a f...
In the present study, AZ41 and AZ51 alloys were fabricated using disintegrated melt deposition technique followed by hot extrusion. AZ41/Yttria and AZ51/Yttria composites were prepared using 0.6 wt% yttria nano particles in the alloys using the same fabrication technique. From the tensile test results, both strengths (yield and tensile) and ductility were improved in AZ51 when compared to AZ41....
The strength-ductility trade-off has been a long-standing dilemma in materials science. This has limited the potential of many structural materials, steels in particular. Here we report a way of enhancing the strength of twinning-induced plasticity steel at no ductility trade-off. After applying torsion to cylindrical twinning-induced plasticity steel samples to generate a gradient nanotwinned ...
The extent of piracy for a specific digital good can be characterized by the laws of demand and supply. The music industry and its trade organization, the RIAA, have recognized this and taken aggressive steps to diminish demand as well as supply. In this study, we develop a model that describes the dynamics of demand and supply-side of piracy propagation. Using the model, we investigate the eff...
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