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A recent development is to include additional flange, web, and lip stiffeners in the sections to increase the buckling capacity in line with the increased yield strength.
Compared to the Al-Cu-Mg part, the Zr-modified Al-Cu-Mg part with the ultrafine grain exhibits increased yield strength (446 ± 4.3 MPa) and ultimate tensile strength (451 ± 3.6 MPa).
The results showed that when silica weight percent was increased, the Young's modulus increased, yield strength remained constant and energy absorption capability of columns decreased, and specimens collapsed under unstable and dangerous mode.
Based on experimental and complimentary finite element results, predictive equations are proposed to estimate increased yield strength and ultimate tensile strength as a function of stress triaxiality in structural steels.
Compared with normal strength steel (NSS) axial compression members, HSS members possess more critical local buckling behavior since its component plates may be designed as being more slender, and different mechanical properties of HSS, in terms of increased yield strength and reduced ductility, may result in different local buckling behaviors.
Despite the fine grain of the 0Al steel, the origin of its active twinning was the highly increased yield strength relative to σtw, and the promoted dislocation interactions, giving rise to an increase in the number of sites at which twin nucleation occurred.
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For a given elastic plastic property, an increasing yield strength gradient causes a reduction in total apparent friction through a reduction in the ploughing coefficient.
The results show the expected trend of increasing yield strength with decreasing bilayer thickness, and compare favorably with estimates of the yield strengths based on sharp tip nanoindentation.
By rising MMT weight content Wf up to 1 wt.% it is possible to increase yield strength and ultimate strength of the composite by 17% and 27% respectively in comparison to neat rPET.
The computations reveal that pile-up of the graded alloy around the indenter, for indentation with increasing yield strength beneath the surface, is noticeably higher than that for the two homogeneous reference materials that constitute the bounding conditions for the graded material.
Increasing strain rates and decreasing filler content increases yield strength for all the foams investigated compared to neat HDPE.
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