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at the center of the butterfly specimen.The shear band results from nonuniform deformation constantly under the shear stress.With stress concentration,cracks are produced within the shear band...Damage and fracture mechanism of 6063 aluminum alloy under three kinds of stress statesZHU Hao,ZHU Liang,and CHEN JianhongKey Laboratory of the Ministry of Education of China for Nonferrous Metal......
), Xuzhou 221008, China)Abstract:Numerical investigation was performed to examine the effect of rear barrier pillar on stress distribution around a longwall face. Salamon theoretical formula was used to calculate the parameters of the caving zone, which was later assigned to double yield constitutive model in FLAC3D. Numerical results demonstrate that high stress concentration zone exists above......
J. Cent. South Univ. (2020) 27: 3278-3289 DOI: https://doi.org/10.1007/s11771-020-4546-0 Cations stress on low-grade nickel sulfide ore oxidation leaching KANG Jin-xing(康金星), WANG Xin(王鑫), WANG Ya... stress of magnesium ion and sodium ion on the low-grade nickel sulfide ore oxidative leaching in simulated sulfuric acid solutions were investigated. This study was performed in two courses, including......
of one-step and two-step treatments on the Zr distribution and Al3Zr dispersoid characteristics in as-cast commercial AA7150 aluminum alloy. It is shown that the Zr concentration in the dendrite centre regions is higher than that near the dendrite edges in the as-cast condition, and that homogenization at 460 °C for 20 h is insufficient to remove these concentration gradients. After homogenizing......
and quality were studied in lavender plant(Lavandula Angustifolia Mill, Variety 701) under osmotic stress by means of PEG-6000 solution. The results show that osmotic stress could reduce the growth rate of lavender, and increase the content of SSC(soluble sugar concentration) to some extent. Compared with control group,the contents of essential oil in flowers and leaves respectively increase......
and quality were studied in lavender plant(Lavandula Angustifolia Mill, Variety 701) under osmotic stress by means of PEG-6000 solution. The results show that osmotic stress could reduce the growth rate of lavender, and increase the content of SSC(soluble sugar concentration) to some extent. Compared with control group,the contents of essential oil in flowers and leaves respectively increase......
Effect of intermediate principal stress on strength of soft rock under complex stress statesMA Zong-yuan(马宗源)1, LIAO Hong-jian(廖红建)2, DANG Fa-ning(党发宁)1(1. School of Civil Engineering... tests simulation, the effect of the intermediate principal stress on the strength of soft rock was investigated. Finally, an example of an axial compression test for a hard rock pillar with a soft......
J. Cent. South Univ. Technol. (2008) 15: 344-349 DOI: 10.1007/s11771-008-0065-0 Piezoelectric responses of brittle rock mass containing quartz to static stress and exploding stress wave... containing piezoelectric materials was investigated under both static stress and exploding stress wave in the view of piezoelectric effect. The results show that the intensity of the EME induced from......
Thermal residual stress of polycrystalline diamond compacts CHEN Feng(陈 枫)1, XU Gen(徐 根)2, MA Chun-de(马春德)1, XU Guo-ping(徐国平)3 1. Testing Center, Central South University, Changsha.... The obtained results show that although compressive residual stresses exist both in the interface of PCD table and in the most region of PCD table surface, the tensile residual stress, which is a fatal......
