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Thermal-hydraulic modeling and analysis ofspool valve with sloping U-shape notch by bond graphLOU Lei(娄磊)1, WU Wan-rong(吴万荣)1, WANG Zhao-qiang(王兆强)2, LIANG Xiang-jing(梁向京)1(1.College of Mechanical...:To increase the efficiency and reliability of the thermodynamics analysis of the spool valve, the precise function expression of the flow area for the sloping U-shape notch orifice versus the spool stroke......
. The test results show that the rockburst process of hole sidewall experienced calm period, pellet ejection period, rock fragment exfoliation period and finally formed the V-shaped notch. The rockburst... dimension of rock fragments increases. Key words: rockburst; loading rate; deep circular tunnel; true-triaxial test; V-shaped notch Cite this article as: SI Xue-feng, HUANG Lin-qi, GONG Feng-qiang, LIU Xi......
Flow ？eld simulation and establishment for mathematical models of flow area of spool valve with sloping U-shape notch machined by different methodsWang Zhao-qiang(王兆强)1, Gu Lin-yi(顾临怡)1, Ji Hong(冀宏)2... University of Technology, Lanzhou 730050, China)Abstract:Precise function expression of the flow area for the sloping U-shape notch orifice versus the spool stroke was derived. The computational......
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Notch Effect of Materials: Strengthening or Weakening?Ruitao Qu,Peng Zhang,Zhefeng ZhangShenyang National Laboratory for Materials Science, Institute of Metal Research,Chinese Academy of Sciences摘 要:Notch is a very important geometry with widespread applications in engineering structural components. Finding a universal equation to predict the effect......
flow of TiO2-water nanofluid inside annuli with different radius ratios using two-phase mixture model [J]. Applied Thermal Engineering, 2016, 100: 1149-1160. [31] GHASEMI K, SIAVASHI M. Lattice... as: Siavashi Majid, Jamali Mohammad. Optimal selection of annulus radius ratio to enhance heat transfer with minimum entropy generation in developing laminar forced convection of water-Al2O3 nanofluid flow......
半径和应力比的变化对合金的组织及缺口敏感性影响不大,仅疲劳强度稍有变化.与其他类型常用钛合金相比较,Ti-24Nb-4Zr-8Sn合金具有低的室温疲劳缺口敏感性,这主要归因于其良好的室温塑性以及超弹性变形特点. 关键词:钛合金；缺口；疲劳缺口敏感性 中图分类号:TG 146 文献标志码:A Fatigue notch sensitivity..., Shenyang 110016, China) Abstract: The effect of notch size and R ratios on high cycle fatigue properties at room temperature of Ti-24Nb-4Zr-8Sn alloy was investigated. The results show that, due......
Forming characteristics of thin-walled tube bending process with small bending radius LI Heng(李 恒) , YANG He(杨 合), ZHAN Mei(詹 梅), GU Rui-Jie(谷瑞杰) Department of Materials Forming... bending radius cause the defects such as wrinkling, overthinning and cross-section distortion more prone to occur in bending process. Based on the analysis of the forming characteristics by analytical......
Modeling Notch Wear of Ceramic Tool in High Speed Machining of Nickel-based Superalloy肖茂华College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics摘 要:On the basis of theoretical analyses and calculations of high speed continuous impact force and tool notch surface temperature acted upon by burr and serrated chip......
Effect of Pre-loading on Short Fatigue Crack Growth at a Notch徐可为,何家文,周惠久摘 要:<正> Results indicate that under cyclic tension thegrowth rate of short fatigue crack from notch rootwill be lowered greatly by tensile pre-loading,butonly a little change by compressive pre-loading.The effect of tensile pre-loading will decrease withthe increase of stress......
