Using materials mechanics and elastic-plastic mechanics,we deduce the laws of change of a neutral plane of the guide rail during the four deformation stages and the expressions of its bending moment when the T-section steel of the guide rail comes to the stage of elastic-plastic bending deformation.
本文应用材料力学与弹塑性力学理论,分阶段推导了电梯导轨T型钢进入弹塑性弯曲变形时中性层的变化规律及弯矩的表达式,给出了弯矩比与弹区比的关系式,为其矫直参数的设计计算提供一定的参考。
Research on place of stress and strain neutral layer in elastic plastic bending of plate;
板料弹塑性弯曲应力应变中性层位置关系探讨
The paper suggested a drawbead model in which Bauschinger effect and incline of neutral layer were taken into account.
建立了考虑板料中性层偏移、包辛格效应等因素的拉延筋解析模型。
In this paper,stresses in the bend,wall thickness change,shrinking rate at the tube section,deviation of neutral axis,bending moment,and flattening have been analyzed.
针对管材小半径弯曲的成形过程,运用塑性成形基本理论,对管材弯曲中的应力分布、壁厚改变、中性层偏移、弯矩、截面收缩率等主要工艺参数进行了分析,推导出了相关解析计算公式,并探讨了相对弯曲半径变化对各工艺参数的影响,为管材弯曲工艺计算提供了简便方法。
The neutral surface relation of multi-opening (with door and window both opened) room is derived by using Equality Window Dimension method.
本文建立了复杂开口房间的数学模型,并运用等效窗口面积法对复杂开口条件(门窗同时开启)下房间中性层关系进行了数学推导,对单一开口和复杂开口房间发生火灾时房间门和窗同时开启状态下中性层位置进行求解和比较分析,同时还对不同温度下房间孔洞的烟气、空气质量流量进行了计算和比较;对在室内温度逐渐升高的情况下房间中性层高度的变化进行了研究和分析。
The author has also provided the formulas to calculate the radius of neuter curved surface.
对有初始曲率平板的弹塑性纯弯曲进行了详细的理论分析,导出了其应力与应变的计算公式,从理论上证明了曲板在完全塑性弯曲阶段中性层面位置将向内移动,并给出了中性层面半径的计算公式。
neutral layer of flexspline's toothed ring
柔轮齿圈壁厚中性层
atmosphere, magnetoshere and plasma-in-space
大气层、磁性层和空中等离子层
mesodermal mixed tumor of corpus uteri
子宫体混合性中胚层瘤
Social Stratum Structural Closure and the Development of the Chinese Middle Class;
阶层结构性封闭与中国中产阶层的发展
Research on Characteristic of Plasma Sheath and Dust Particles in the Sheath;
等离子体鞘层及尘埃在鞘层中的特性研究
Simulation and Statistic Analysis on Mid-Latitude Sporadic E-Layers;
中纬电离层突发E层的统计特性及模拟研究
Study and Performance Analysis of RLC and MAC Layer Retransmission in Wireless Telecommunication;
无线通信中RLC/MAC层两层重传的研究及性能分析
The Effect of Interlayer Heterogeneity on Enhanced Oil Recovery in Mid-low Permeability Reservoir
中低渗透油层层间非均质性对提高采收率影响
The Applicability Analysis of Layer-matrix method computing in stratified medium
层矩阵法在层状介质模型计算中的适用性分析
Difficulties and Countermeasures of Reservoir Prediction of Lithology Trap in Ludong Stratum
鲁东地层岩性圈闭储层预测中的难点与对策
Quantitative study on fault sealing ability in sandstone and mudstone thin interbed
砂泥岩薄互层段中断层封闭性的定量研究
Centering of Level-1 Independent Variables in Hierarchical Linear Models
分层线性模型层-1自变量中心化问题研究综述
Electrocatalytic properties of IrO_2-Ta_2O_5/Ti coating anodes with TiN interlayer
含TiN中间层IrO_2-Ta_2O_5涂层钛阳极的电催化性能
STABILITY ANALYSIS OF PERIPHERAL DOUBLE AND INTERMEDIATE SINGLE RETICULATED SHELLS
周边双层中间单层球面网壳稳定性分析
Influence Factors for Ni Content in Zn-Ni Alloy Coating and the Coating Corrosion Resistance
Zn-Ni合金镀层中Ni含量影响因素及镀层耐蚀性
The Effects of Interlayer on Physico-chemical Properties of Ti-based RuSnCo Nanostructural Coating
中间层对钛基锡钌钴纳米涂层物化性能的影响
Study on Geological and Engineering Character and Build Embankment Capability of Sichuan Central Redbeds;
川中红层工程地质特性与路用性研究
Applying of Fly-ash in Poor Propeities;
低活性粉煤灰在半刚性基层中的应用