|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Metal Flowing of Involute Spline Cold Roll-beating Forming显示文摘The present research on involute spline cold roll-beating forming is mainly about the principles and motion relations of cold roll-beating,the theory of roller design,and the stress and strain field analysis of cold roll-beating,etc.However,the research on law of metal flow in the forming process of involute spline cold roll-beating is rare.According to the principle of involute spline cold roll-beating,the contact model between the rollers and the spline shaft blank in the process of cold roll-beating forming is established,and the theoretical analysis of metal flow in the cold roll-beating deforming region is proceeded.A finite element model of the spline cold roll-beating process is established,the formation mechanism of the involute spline tooth profile in cold roll-beating forming process is studied,and the node flow tracks of the deformation area are analyzed.The experimental research on the metal flow of cold roll-beating spline is conducted,and the metallographic structure variation,grain characteristics and metal flow line of the different tooth profile area are analyzed.The experimental results show that the particle flow directions of the deformable bodies in cold roll-beating deformation area are determined by the minimum moving resistance.There are five types of metal flow rules of the deforming region in the process of cold roll-beating forming.The characteristics of involute spline cold roll-beating forming are given,and the forming mechanism of involute spline cold roll-beating is revealed.This paper researches the law of metal flow in the forming process of involute spline cold roll-beating,which provides theoretical supports for solving the tooth profile forming quality problem. | CUI Fengkui WANG Xiaoqiang ZHANG Fengshou XU Hongyu QUAN Jianhui LI Yan | 2013 | Chinese Journal of Mechanical Engineering2013，26，5： | 19 |
| 2 | Three-dimensional distinct element modeling of fault reactivation and induced seismicity due to hydraulic fracturing injection and backflow显示文摘This paper presents a three-dimensional fully hydro-mechanical coupled distinct element study on fault reactivation and induced seismicity due to hydraulic fracturing injection and subsequent backflow process,based on the geological data in Horn River Basin,Northeast British Columbia,Canada.The modeling results indicate that the maximum magnitude of seismic events appears at the fracturing stage.The increment of fluid volume in the fault determines the cumulative moment and maximum fault slippage,both of which are essentially proportional to the fluid volume.After backflow starts,the fluid near the joint intersection keeps flowing into the critically stressed fault,rather than backflows to the wellbore.Although fault slippage is affected by the changes of both pore pressure and ambient rock stress,their contributions are different at fracturing and backflow stages.At fracturing stage,pore pressure change shows a dominant effect on induced fault slippage.While at backflow stage,because the fault plane is under a critical stress state,any minor disturbance would trigger a fault slippage.The energy analysis indicates that aseismic deformation takes up a majority of the total deformation energy during hydraulic fracturing.A common regularity is found in both fracturing-and backflow-induced seismicity that the cumulative moment and maximum fault slippage are nearly proportional to the injected fluid volume.This study shows some novel insights into interpreting fracturing-and backflowinduced seismicity,and provides useful information for controlling and mitigating seismic hazards due to hydraulic fracturing. | Zirui Yin Hongwei Huang Fengshou Zhang Lianyang Zhang Shawn Maxwell | 2020 | Journal of Rock Mechanics and Geotechnical Engineering2020，12，4： | 4 |
| 3 | Probing the density dependence of the symmetry energy with central heavy ion collisions显示文摘An improved isospin dependent Boltzmann Langevin model,in which the inelastic channels and momentum dependent interactions are incorporated,is used to investigate the high-density behavior of nuclear symmetry energy.By taking several forms of nuclear symmetry energy,we calculate the time evolutions of neutron over proton ratio,π multiplicity and π-/π+ ratio,and the kinetic energy and transverse momentum spectra of π-/π+ ratio in the heavy ion collisions at 400A MeV.It is found that the neutron over proton ratio and π-/π+ ratio are very sensitive to the nuclear symmetry energy,and the π-is more sensitive to the nuclear symmetry energy than the π+.A supersoft symmetry energy results in a larger π-/π+ ratio. | XIE Wenjie ZHANG Fengshou | 2013 | Nuclear Science and Techniques2013，24，5： | 4 |
| 4 | First experimental constraints on WIMP couplings in the effective field theory framework from CDEX显示文摘We present weakly interacting massive particles(WIMPs) search results performed using two approaches of effective field theory from the China Dark Matter Experiment(CDEX), based on the data from both CDEX-1B and CDEX-10 stages. In the nonrelativistic effective field theory approach, both time-integrated and annual modulation analyses were used to set new limits for the coupling of WIMP-nucleon effective operators at 90% confidence level(C.L.) and improve over the current bounds in the low mχregion. In the chiral effective field theory approach, data from CDEX-10 were used to set an upper limit on WIMP-pion coupling at 90% C.L. We for the first time extended the limit to the m_(χ)<6 GeV/c^(2) region. | Yi Wang Zhi Zeng Qian Yue LiTao Yang KeJun Kang YuanJing Li Mehment Agartioglu HaiPeng An JianPing Chang JingHan Chen YunHua Chen JianPing Cheng Cheng Yi Chiang WenHan Dai Zhi Deng ChangHao Fang XinPing Geng Hui Gong QiuJu Guo XuYuan Guo HongJian He Li He ShengMing He JinWei Hu TuChen Huang HanXiong Huang HaiTao Jia LiPing Jia Xi Jiang HauBin Li JianMin Li Jin Li MingXuan Li RenMingJie Li Xia Li YuLan Li Bin Liao FongKay Lin ShinTed Lin ShuKui Liu YanDong Liu Yu Liu YuanYuan Liu ZhongZhi Liu Hao Ma YuCai Mao QiYuan Nie JinHua Ning Hui Pan NingChun Qi Jie Ren XiChao Ruan ChangSong Shang Vivek Sharma Ze She Lakhwinder Singh Monoj Kumar Singh TianXi Sun ChangJian Tang WeiYou Tang Yang Tian GuangFu Wang Li Wang Qing Wang Yu Chen Wang YunXiang Wang Zhen Wang Henry Tsz-King Wong ShiYong Wu YuCheng Wu HaoYang Xing Yin Xu Tao Xue YuLu Yan Nan Yi ChunXu Yu HaiJun Yu JianFeng Yue Ming Zeng BingTao Zhang Lei Zhang FengShou Zhang ZhenYu Zhang KangKang Zhao MingGang Zhao JiFang Zhou ZuYing Zhou JingJun Zhu | 2021 | Science China(Physics,Mechanics & Astronomy)2021，64，8： | 3 |
| 5 | Frictional stability of Longmaxi shale gouges and its implication for deep seismic potential in the southeastern Sichuan Basin显示文摘Microearthquakes accompanying shale gas recovery highlight the importance of exploring the frictional and stability properties of shale gouges.Aiming to reveal the influencing factors on fault stability,this paper explores the impact of mineral compositions,effective stress and temperature on the frictional stability of Longmaxi shale gouges in deep reservoirs located in the Luzhou area,southeastern Sichuan Basin.Eleven shear experiments were conducted to define the frictional strength and stability of five shale gouges.The specific experimental conditions were as follows:temperatures:90–270°C;a confining stress:95 MPa;and pore fluid pressures:25–55 MPa.The results show that all five shale gouges generally display high frictional strength with friction coefficients ranging from 0.60 to 0.70 at the aforementioned experiment condition of pressures,and temperatures.Frictional stability is significantly affected by temperature and mineral compositions,but is insensitive to variation in pore fluid pressures.Fault instability is enhanced at higher temperatures(especially at>200°C)and with higher tectosilicate/carbonate contents.The results demonstrate that the combined effect of mineral composition and temperature is particularly important for induced seismicity during hydraulic fracturing in deep shale reservoirs. | Fengshou Zhang Li Cui Mengke An Derek Elsworth Changrong He | 2022 | Deep Underground Science and Engineering2022，1，1： | 2 |
| 6 | Enantioseparation and Determination of the Chiral Fungicide Furametpyr Enantiomers in Rice, Soil, and Water by High‐Performance Liquid Chromatography显示文摘 | Fengshou Dong Xiu Chen Jun Xu Xingang Liu Zenglong Chen Yuanbo Li Hongjun Zhang Yongquan Zheng | 2013 | Chirality2013，，12： | 2 |
| 7 | Influence of fracture roughness on shear strength,slip stability and permeability:A mechanistic analysis by three-dimensional digital rock modeling显示文摘Subsurface fluid injections can disturb the effective stress regime by elevating pore pressure and potentially reactivate faults and fractures.Laboratory studies indicate that fracture rheology and permeability in such reactivation events are linked to the roughness of the fracture surfaces.In this study,we construct numerical models using discrete element method(DEM)to explore the influence of fracture surface roughness on the shear strength,slip stability,and permeability evolution during such slip events.For each simulation,a pair of analog rock coupons(three-dimensional bonded quartz particle analogs)representing a mated fracture is sheared under a velocity-stepping scheme.The roughness of the fracture is defined in terms of asperity height and asperity wavelength.Results show that(1)Samples with larger asperity heights(rougher),when sheared,exhibit a higher peak strength which quickly devolves to a residual strength after reaching a threshold shear displacement;(2)These rougher samples also exhibit greater slip stability due to a high degree of asperity wear and resultant production of wear products;(3)Long-term suppression of permeability is observed with rougher fractures,possibly due to the removal of asperities and redistribution of wear products,which locally reduces porosity in the dilating fracture;and(4)Increasing shear-parallel asperity wavelength reduces magnitudes of stress drops after peak strength and enhances fracture permeability,while increasing shear-perpendicular asperity wavelength results in sequential stress drops and a delay in permeability enhancement.This study provides insights into understanding of the mechanisms of frictional and rheological evolution of rough fractures anticipated during reactivation events. | Chaoyi Wang Derek Elsworth Yi Fang Fengshou Zhang | 2020 | Journal of Rock Mechanics and Geotechnical Engineering2020，12，4： | 2 |
| 8 | Temporo-Spatial Distribution and Evolution of Ore Deposits in the West Sector of the Northern Qilian Mountains显示文摘The west sector of the northern Qilian Mountains is well-known for the Jingtieshan-type iron deposits. A new breakthrough has been made in prospecting for gold and copper in recent years. In this paper, the distribution characteristics of ore deposits in the study area are discussed from the viewpoint of tectonic evolution. It is suggested that there are 9 stages of mineralization from the Palaeoproterozoic to Indosinian. Four minerogenetic series and two minerogenetic subseries of ore deposits are recognized. Iron mineralization occurred in several stages, while most of the metals were accumulated in large amounts in the Caledonian. The enrichment and mineralization of gold is related to large-scale shear-strike-slip faults and the ascent and unloading of deep-seated fluids. | MAO Jingwen ZHANG Xiaoyu ZHANG Zhaochong REN Fengshou ZUO Guochao ZHANG Zuoheng YANG Jianmin WANG Zhiliang YE Dejin | 1999 | Acta Geologica Sinica(English Edition)1999，73，2： | 1 |
| 9 | Comparison and improvement of the algorithm of two-value image 显示文摘 | CUI Fengkui WANG Xiaoqiang ZHANG Fengshou | 1997 | Journal of Luoyang Institute Technology1997，4，： | 1 |
| 10 | HbA1c and the diagnosis of diabetes and prediabetes in a middle‐aged and elderly H an population from northwest C hina (HbA1c与中国西北部地区中老年汉族人群糖尿病和糖尿病前期的诊断)显示文摘 | Shengli Wu Fengshou Yi Chao Zhou Mintao Zhang Yujing Zhu Yilihamu Tuniyazi Lijuan Huang Xuefang Huang Fugang Wang Yufang Bi Guang Ning | 2013 | Journal of Diabetes2013，，： | 1 |
| 11 | 显示文摘 | Jingwen Mao Yumin Qiu Richard J. Goldfarb Zhaochong Zhang Steve Garwin Ren Fengshou | 2002 | Mineralium Deposita (-)2002，，3： | 1 |
| 12 | 显示文摘 | Jingwen Mao Yumin Qiu Richard J. Goldfarb Zhaochong Zhang Steve Garwin Ren Fengshou | 2002 | Mineralium Deposita (-)2002，，3： | 1 |
| 13 | 显示文摘 | Jingwen Mao Yumin Qiu Richard J. Goldfarb Zhaochong Zhang Steve Garwin Ren Fengshou | 2002 | Mineralium Deposita (-)2002，，3： | 1 |
| 14 | 显示文摘 | Jingwen Mao Yumin Qiu Richard J. Goldfarb Zhaochong Zhang Steve Garwin Ren Fengshou | 2002 | Mineralium Deposita (-)2002，，3： | 1 |
| 15 | HbAlc and the diagnosis of diabetes and prediabetes in a middle-aged and elderly Han population from northwest China (I-lbA1 )显示文摘 | Shengli Wu Fengshou i Chao Zhou Mintao Zhang Yujing Zhu Yilihamu Tuniyazi Lijuan Huang Xuefang Huang Fugang Wang Yufang Bi Guang Ning | 2013 | Journal of diabetes2013，5，3： | 1 |
| 16 | 显示文摘 | Jingwen Mao Yumin Qiu Richard J. Goldfarb Zhaochong Zhang Steve Garwin Ren Fengshou | 2002 | Mineralium Deposita (-)2002，，3： | 1 |
| 17 | 显示文摘 | Jingwen Mao Yumin Qiu Richard J. Goldfarb Zhaochong Zhang Steve Garwin Ren Fengshou | 2002 | Mineralium Deposita (-)2002，，3： | 1 |
| 18 | Profile of the composition fractions in neutron stars显示文摘The composition fractions of β-stable neutron stars and their radial distributions are investigated based on Skyrme-Hartree-Fock theory and Tolman-Oppenheimer-Volkoff (TOV) equation. It is found that a pure neutron interior with a radius of 3.5 km can exist in the neutron stars. When the radius is greater than 3.5 km, the fractions of the proton, electron and μ- appear and increase with the increment of the radius, then decrease after reaching their maximum at the radius of 8 km. These results make it possible to further study the thermal evolution and magnetic properties of the neutron stars. | LI Wenfei, ZHANG Fengshou & CHEN LiewenCenter of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China Department of Physics, Shangh | 2002 | Chinese Science Bulletin2002，47，8： | 1 |
| 19 | A review of methods,applications and limitations for incorporating fluid flow in the discrete element method显示文摘The past decade has witnessed the substantial growth in research interests and progress on the subject of coupled hydro-mechanical processes in rocks and soils,driven mainly by the surge of research in unconventional hydrocarbon reservoirs and associated hazards.Many coupling techniques have been developed to include the effects of fluid flow in the discrete element method(DEM),and the techniques have been applied to a variety of geomechanical problems.Although these coupling methods have been successfully applied in various engineering fields,no single fluid/DEM coupling method is universal due to the complexity of engineering problems and the limitations of the numerical methods.For researchers and engineers,the key to solve a specific problem is to select the most appropriate fluid/DEM coupling method among these modeling technologies.The purpose of this paper is to give a comprehensive review of fluid flow/DEM coupling methods and relevant research.Given their importance,the availability or unavailability of best practice guidelines is outlined.The theoretical background and current status of DEM are introduced first,and the principles,applications,and advantages and disadvantages of different fluid flow/DEM coupling methods are discussed.Finally,a summary with speculation on future development trends is given. | Tuo Wang Fengshou Zhang Jason Furtney Branko Damjanac | 2022 | Journal of Rock Mechanics and Geotechnical Engineering2022，14，3： | 1 |
| 20 | Comparison between nuclear thermometers in central Xe+Sn collision显示文摘The temperature of fragmenting source in central heavy-ion collisions at Fermi energy is investigated by the isospin-dependent quantum molecular dynamics model in combination with the statistical decay model GEMINI.Five different nuclear thermometers are used to extract nuclear temperature.We find that the He and Li isotope temperature reaches a plateau at about 70-100 MeV/nucleon of beam energy.The slope temperature and the quadrupole fluctuation temperature give high values.The quantum slope temperature and the quantum quadrupole fluctuation temperature are more close to the He and Li isotope temperatures. | GUO Chenchen SU Jun ZHANG Fengshou | 2013 | Nuclear Science and Techniques2013，24，5： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员