共搜索到6053条信息,每页显示10条信息,共606页。用时:0小时0分0秒203毫秒
Study on Lattice Parameter Variance and Eutectic Reaction during Crystal Growth of Nd,Cr∶GSGG by Czochralksi Method Shao Shufang1,Sun Dunlu1,Gu Changjiang1,Yin Shaotang1,Zhang Qingli1 (1.Crystal...=sinθ-sinθ1-t(t is an adjustable parameter), the lattice parameters of Nd,Cr∶GSGG and additional GdScO3 phase were computed. The results indicate that the lattice parameters of Nd,Cr∶GSGG increase......
......
An Integration Depending on Parameter Ф for Analytical Solution of the Compression of Thin Workpiece赵德文,张强摘 要:<正> An integration depending on the parameter Ф hasbeen applied to the function Фdx so that an explicitformula of specific pressure calculation and an analyticalsolution are obtained.It has been found that the analyticalsolution......
An improved self-adaptive membrane computing optimization algorithm andits applications in residue hydrogenating model parameter estimationLU Hui-bin(芦会彬), BO Cui-mei(薄翠梅), YANG Shi-pin(杨世品)(College... results for residue hydrogenating kinetics model parameter estimation show that the proposed method is superior to the traditional intelligent algorithms in terms of convergence accuracy and stability......
A NOVEL PARAMETER FOR EVALUATING THE FATIGUE CRACK GROWTH RATE IN CARBON STEELS H.Nisitani1,S.Q.Zhu2,N.KAWAGOISHI3,X.S.WANG2 (1.Faculty of Engineering,Kyushu Sangyuo University,Fukuoka,812,Japan;2.Department of Engineering Mechanics,Tsinghua University,Beijing 100084,China;3.Faculty of Engineering,Kagoshima University,Kagoshima,890-0065,Japan) Abstract:A novel parameter is suggested......
Parameter design and performance analysis of zero inertia continuously variable transmission systemHu Jian-jun(胡建军), Ji Yi(吉毅), Yan Jiu-jiang(晏玖江) (State Key Laboratory of Mechanical Transmission... transient operating conditions, a new CVT equipped with planetary gear mechanism and flywheel was researched, a design method of transmission parameter optimization was proposed, and the comprehensive......
45钢高温拉伸峰值应力和变形储能与Z参数的关系函数研究 游红1,黄光杰1,钱宝华1 (1.重庆大学,材料科学与工程学院,重庆,400044) 摘要:通过Gleeble-1500D热模拟试验机进行高温拉伸实验,变形温度范围1123~1273K,初始应变速率范围0.01~5s-1,并采用双曲正弦模型,研究了45钢在高温拉伸条件下的峰值应力,变形储能与Zener-Hollomon参数的关系函数.结果表明:峰值应力与Z参数之间能较好地满足双曲正弦关系,其激活能为336.0kJ/mol;同时,变形储能与Z参数满足ΔGD=0.1269(lnZ)2-6.8262(lnZ)+ 93.873函数关系,且随着应变速率的增加和变形温度的下降而上升,其值在2~20J/mol之间波动. 关键词:峰值应力; 关系函数; Zener-Hollomon参数; 变形储能; [全文内容正在添加中] ......
s-1条件下的流变应力特征,并利用TEM分析了合金在不同变形条件下的组织形貌特征.结果表明,应变速率和变形温度对合金流变应力的大小有显著影响,流变应力随变形温度的升高而降低,随应变速率的提高而增大;合金平均亚晶尺寸随温度补偿应变速率Zener-Hollomon参数的升高而减小.可用Zener-Hollomon咖参数描述该Al-Zn-Mg-Cu合金热变形时的流变应力行为. 关键词:Al-Zn-Mg-Cu合金; 热压缩变形; 流变应力; zener-Hollomon参数; [全文内容正在添加中] ......
: bulk module, tangent Young’s module, volume deformation coefficient and Poisson ratio. A parameter defined as virtual peak deviatoric stress dependent on state parameter is introduced into hyperbolic... words:sand; state parameter; strain work-softening; nonlinear elasticity......
Relations between the Lattice Parameter and the Stability of Austenite against ε Martensite for the Fe-Mn Based AlloysXing LU, Zuoxiang QIN, Xing TIAN, Yansheng ZHANG, Bingzhe DING and Zhuangqi HU1... of Sciences, Shenyang 110016, China摘 要:<正> The influences of lattice parameter of austenite, the electron concentration, the yield strength of parent......