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J. Cent. South Univ. (2020) 27: 3544-3566 DOI: https://doi.org/10.1007/s11771-020-4509-5 Numerical simulation research on response characteristics of surrounding rock for deep super-large section... in deep mining condition. Based on the in-site geological conditions of Longgu coal mine, this paper used the dynamic module of FLAC3D to study the response characteristics of deep super-large section......
J. Cent. South Univ. (2016) 23: 440-448 DOI: 10.1007/s11771-016-3089-x Failure mechanism of bolting support and high-strength bolt-grouting technology for deep and soft surrounding rock with high... Heidelberg 2016 Abstract: In deep underground mining, the surrounding rocks are very soft with high stress. Their deformation and destruction are serious, and frequent failures occur on the bolt support......
of results for split Hopkinson pressure bar test LI Xi-bing(李夕兵)1, ZHOU Zi-long(周子龙)1, ZHAO Yang-sheng(赵阳升)2 (1. School of Resources and Safety Engineering, Central South University, Changsha 410083... error and so on often lead to the scattering of test results, and bring ultimate difficulty for forming general test conclusion. Based on the stochastic finite element method, the uncertain parameters......
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J. Cent. South Univ. (2020) 27: 3025-3039 DOI: https://doi.org/10.1007/s11771-020-4526-4 True triaxial hydraulic fracturing test and numerical simulation of limestone YANG Wei-min(杨为民)1, 2, GENG... technology of deep energy exploitation, accelerates the rapid development of the modern petroleum industry. To study the mechanisms of hydraulic fracture propagation and rock failure mode......
生,极限拉深行程显著提高,凹模相对圆角为12时的极限深度比相对圆角4.5时的提高了83%. 关键词:5A06铝合金；中厚板；筒形件拉深；径向应力 中图分类号:TG386.3 文献标志码:A Deformation behavior of deep drawing of 5A06 aluminum alloy plate ZHANG... and Engineering, Harbin Institute of Technology, Harbin 150001, China) Abstract: The deformation behavior of deep drawing of plate is different from that of sheet metal because of the obvious stress gradient......
on the drawability of 5182-O aluminum sheet at room temperature, the flat blank holder and curved blank holder were employed during the deep drawing process. The microstructures were characterized... blank holder is used. These are due to a more uniform sheet flow in different directions with curved blank holder. Key words: 5182-O aluminum alloy; deep drawing; blank holder; earring; wrinkling 1......
J. Cent. South Univ. (2020) 27: 1306-1319 DOI: https://doi.org/10.1007/s11771-020-4368-0 Seismic response of tunnel under normal fault slips by shaking table test technique FAN Ling(樊玲), CHEN Jie.... It is necessary to study tunnel dynamic response under action of normal fault slip and earthquake. In this paper, a three-dimensional normal fault sliding device was designed, and a shaking table test......
关键词:5A06铝镁合金；充液拉深；数值模拟；双路径；主动径向压力 中图分类号:TG 146.2 文献标识码:A Numerical simulation of aluminum-magnesium alloy cup’s forming by hydrodynamic deep drawing with double... loading paths process of hydrodynamic deep drawing (HDD) with independent radial hydraulic pressure and chamber pressure was brought forward. The numerical simulations of the aluminum-magnesium alloy......
electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), hardness test, pin-on-disk wear test, and the reciprocating pin-on-flat wear test. The results show that deep...Effect of deep cryogenic treatment on the formation of nano-sized carbides and the wear behavior of D2 tool steelKamran Amini1,Amin Akhbarizadeh2,Sirus Javadpour1,21. Department of Materials Science......
