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biaxial tension. They found that Gotoh yield criterion describes the yield behavior of steel sheet with good accuracy whereas the Taylor model fits the 6xxx aluminum alloy sheet very well. GREEN et al[5... in Fig.3, when the 2nd load ratios are 4?0, 4?1, 4?2 and 4?3, the isotropic and the kinematic hardening modes can reasonably describe the subsequent yield behavior. From Fig.3(b), it is found that, when......
New double yield surface model for coarse granular materials incorporating nonlinear unified failure criterionLIU Meng-cheng(刘萌成)1,2, LIU Han-long(刘汉龙)1, GAO Yu-feng(高玉峰)1(1. State Key Laboratory..., China)Abstract:A new double-yield-surface (DYS) model was developed to characterize the strength and deformation behaviors of coarse granular materials (CGMs). Two kinds of deformation mechanisms......
cooling condition has a little effect on yielding behavior. 2) A peak yield stress exists on the relationship curve of yield stress vs final dynamic cooling temperature. When the final dynamic...J. Cent. South Univ. Technol. (2008) 15(s1): 322-325 DOI: 10.1007/s11771-008-372-5 Variation of yield stress of Daqing crude oil with pipelining history LI Li(李 立)1, HOU Lei(侯 磊)2, SUN Li-xin(孙......
of the research, the yield behavior of the nanocrystalline materials under high strain rate loading was mainly concerned in the model and uniform deformation was assumed for simplification. Nanocrystalline... analyzed, then Voigt model was applied to coupling grain boundary constitutive relation with mechanical model for grain interior phase to describe the overall yield mechanical behavior of nanocrystalline......
cruciform specimen, biaxial tensile test has been widely used in investigating mechanical behavior of sheet metals under biaxial tensile states. KUWABARA et al[9-11] studied the experimental yield loci of different work hardening of cold-rolled steel sheet and an aluminum alloy sheet under biaxial tension. They found that Gotoh’s yield criterion describes the yield behavior of steel sheet with good......
of Powder Metallurgy, Central South University, Changsha 410083, China ? Central South University Press and Springer-Verlag Berlin Heidelberg 2011 Abstract: The yield behavior of metallic glasses... classes of the experimental data were chosen to draw the yield loci using the unified yield criterion. It is shown that the unified yield criterion can be used to describe the yield behavior......
Tensile and fracture behavior of DZ951 Ni-base superalloy CHU Zhao-kuang(储昭贶)1,2, YU Jin-jiang(于金江)1 , SUN Xiao-feng(孙晓峰)1, ZHAO Nai-ren(赵乃仁)1, GUAN Heng-rong(管恒荣)1, HU Zhuang-qi(胡壮麒)1 1... 2006 Abstract: The tensile and fracture behavior of DZ951 directionally solidified Ni-base superalloy was studied in the temperature range of 20-1 100 ℃. The fracture mode was examined by scanning......
, and the orientation dependence of the plastic deformation behavior was examined at room temperature (RT). At 0?-orientation, temperature dependence of the yield stress was also examined... behavior more quantitatively, Fig.12 shows the variations in maximum stress, plastic strain and apparent yield stress as functions of the number of cycles. The maximum stress showed slight increase during......
Variation in dynamic deformation behavior and resultant yield asymmetry of AZ80 alloy with extrusion temperatureSang-Hoon Kim1,Sang Won Lee1,Byoung Gi Moon2,Ha Sik Kim2,Sung Hyuk Park11. School..., variation in the dynamic recrystallization(DRX) and dynamic precipitation behavior of AZ80 alloy during extrusion due to changes in extrusion temperature was investigated, and the resultant......
