共搜索到20551条信息,每页显示10条信息,共2056页。用时:0小时0分0秒562毫秒
A novel limiting strain energy strength theory LIU Guang-lian(刘光连) School of Mechanics & Electrical Engineering, Central South University, Changsha 410083, China Received 10 August 2009... effect of both normal and shear strain specific energies, the concept of the total equivalent strain specific energy (TESSE) at an oblique section and a new strength theory named as limiting strain energy......
. The experimental strength data of nine plastic metals are consistent with the calculated results of the new limiting strain energy strength theory (LSEST). The traditional yield stress formula...; yield; complete plastic model assumption; shear stress calculation; limiting strain energy strength theory 1 Introduction For plastic metals in uniaxial tension or compression, the phenomenon......
J. Cent. South Univ. Technol. (2009) 16: 0677-0682 DOI: 10.1007/s11771-009-0112-5 Energy consumption in rock fragmentation at intermediate strain rate HONG Liang(洪 亮)1, 2, ZHOU Zi-long(周子龙)1...; Abstract: In order to determine the relationship among energy consumption of rock and its fragmentation, dynamic strength and strain rate, granite, sandstone and limestone specimens......
strain rate provides shorter time for the energy accumulation and lower temperature provides lower mobilities at boundaries which result in the nucleation and growth of dynamically recrystallized grains...;(1) where is the strain rate (s-1), R is the universal gas constant (8.31 J/(mol·K)), T is the absolute temperature (K), Q the apparent activation energy for hot working (kJ/mol), A and  ......
and the activation energy. Key words:dynamic strain aging; serrated flow; strain exponent; activation energy; [全文内容正在添加中] ...DYNAMIC STRAIN AGING BEHAVIOR OF K40S ALLOY X.F.Sun1,F.M.Yang1,Z.Q.Hu1,H.R.Guan1 (1.Institute of Metal Research, The Chinese Academy of Sciences, Shenyang 110016, China) Abstract:The dynamic......
J. Cent. South Univ. (2020) 27: 3202-3212 DOI: https://doi.org/10.1007/s11771-020-4540-6 Effects of temperature on MWCNTs/PDMS composites based flexible strain sensors GUO Deng-ji(郭登机), PAN Xu-dong... University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2020 Abstract: Conductive polymer composites (CPCs) are widely used in the flexible strain sensors due to their simple fabrication......
of the precipitate on this species, a newly isolated strain (YN22) of S. thermosulfidooxidans was cultured in a medium containing Fe2+ as energy source under optimal conditions (pH 1.5, 53 ℃, 0.2 g/L yeast... Jarosite-type precipitates mediated by YN22, Sulfobacillus thermosulfidooxidans, and their influences on strain DING Jian-nan(丁建南), GAO Jian(高 健), WU Xue-ling(吴学玲), ZHANG Cheng-gui(张成桂), WANG......
from each other. The amount of energy added to the system due to work done by the imposed load was calculated, and the strain energy stored in the material at each strain rate was calculated by the current stress integral with respect to strain. The complementary strain energy, which is the difference between the work and the strain energy, was obtained and was considered to supply the surface energy......
energy density are all increased with the increasing strain rates at quasi-static as well as at high strain rates. What is interesting is that the yield strain decreased with the strain rates increasing...Effect of Strain Rate on Compression Behavior of Vinyl Ester Resin Casting MAO Ming-zhong1,XU Xian-jian1,XIONG Jie1,XIONG Tao1,ZHOU Kai1,YANG Bin1 (1.Key Laboratory of Advanced Textile Materials......
, economize energy and can prevent high temperature oxidation of magnesium alloys. Meanwhile, little was studied on higher strain rate superplasticity of the commercial magnesium alloys with large grain size... superplasticities at high strain rate higher than 10-3 s-1. Fig.3 shows the relation between stress and temperature. Through the calculation of the ratio, we can obtain the superplastic energy with a value......