力管

含非线性应力管的电缆终端的电-热场分析

Electric-thermal field analysis in cable terminations equipped with nonlinear stress control tubes

含有非线性应力管的电缆终端电场的有限元分析

Finite element analysis of electric field in cable termination equipped with nonlinear stress control tube

该模型结构为4-7-1的三层BP网络模型，它考虑了管壁处的剪切应力、管壁处温度梯度、管壁处蜡分子浓度梯度和原油的动力黏度对管道蜡沉积速率的影响。

The neural network is 4-7-1 BP structure , and the factors of influencing wax deposition rate include the shear stress , temperature gradient and molecular concentration gradient at pipeline wall , and dynamic viscosity of the crude oil .

为了促进国产直缝电阻焊（ERW）套管在油田的广泛应用，对ERW套管与无缝套管的尺寸精度、残余应力和管体挤毁压力进行了试验研究。

ERW casing is applicated widely in oil and gas industry and substituted for seamless tubing for its high precision , excellent properties , easy controlling of quality and low cost etc.

电缆应力控制管介电性能测试的新方法

A New Measurement Method of Dielectric Properties of Cable Stress-Controlled Tube

无残余应力的管式反应器断裂疲劳

Fracture and fatigue analysis for non-residual stress pipe reactor

原子力显微镜管式扫描器运动学建模与误差分析

Kinematics Modeling and Error Analysis of AFM Tube Scanner

常力封闭管内行走机器人机构类型研究

Research on mechanism types of robots with constant positive pressures moving inside enclosure pipes

对顶进过程中管道纵向与环向钢筋应力及管土接触压力进行了现场测试。

Vertical and annular reinforcing steel bar stress and pipe-soil contact pressure during pipe jacking were monitored on the spot .

管子内压应力与管系应力加速了爆漏过程，是造成过热器管撕裂爆口的次要原因。

The inner stresses of the tubes and pipe arrangement stresses are the secondary cause , which accelerated the explosion procedure .

碳/环氧复合材料用于这种空间桁架结构的主承力推力管可以显著减轻推力支架的重量。

When carbon / epoxy composite materials are employed to manufacture the space truss , the truss weight will be greatly reduced .

利用暂态有限元方法分析了含不同应力控制管时的电缆终端冲击电压下的电场分布。

A comparison of the electric field distribu ˉ tion in cable terminations with several different stress control tubes is investigated under impulse voltage .

测试结果表明，工艺管各截面应力随管位和流量的改变而变化。

It was shown by the measurement results that the section stress of the operation pipe varied with the change of its position and the quantity of flow through it .

然后，本文运用管段模型试验与理论数值分析相对比的方法，分析了结构在静水压下的位移、索力及管段应力在不同荷载时的变化规律。

Then , this article analyzed the displacement , cable force and tube stress of structure under water in different loads , and arrived at the pattern by contrasting the test and theory calculation .

注蒸汽井套管热应力分析及管柱强度设计

Analyses of Steam-injected Well Casing Thermal Stress and Casing String Strength Design

自应力钢筋砼管的质量控制

Quality Control of Auto - loading Steel Pipe

高压输送管路中的应力分析和管壁厚计算

The analysis of stress and the calculation of steel tube 's thickness in the high-pressure pipage

牙齿根管壁应力随着根管锥度增大而增大。

With the increased of the taper of dental root canal , the stress of dental root canal wall increased . 4 .

并且研究了自紧度、初始裂纹尺寸和温度应力对身管安全性的影响。

The research on some influence of autofrettaged degree , initial crack depth and thermal stress on gun barrel safety is also done in the thesis .

采用焊接连接形式，优点是制造方便，连接强度高，缺点是会造成焊接缺陷、产生残余应力、引起管板变形。

With welding connection , there are convenient manufacturing and connect high strength , but there are welding defects , the residual stress and tube plate deformation .

文中将证明“虚力”是管柱在弯曲状态下的流体作用力，并对其特点进行分析，以便为封隔器管柱受力分析计算奠定严密的科学基础。

Fictive force will be proved to be the liquid force under bending state of pipe string in the paper , and its characteristic will be analysed .

对不同加固方法及一次或二次受力的混凝土管在内压力作用下的极限承载力、荷载&应变关系等方面进行了研究。

The influences of different strengthening materials , the first loading and the secondary loading on ultimate bearing capacity , load-strain relationship of the concrete pipeline under internal compression were demonstrated .

在假定流动处于稳定的振荡流动情况下，导得了一组血液流动速度分布公式，压力分布公式以及约束应力公式，管壁位移公式。

Supposing the blood flow is under the stable oscillatory condition , a set of formulas for velocity distribution , pressure distribution , displacement of vessel wall and constraining stress are obtained .

在光管管束与壳体等刚度条件下，用波节管管束代替光管管束，轴向热补偿量可提高404%，相应的拉脱力为光管管束的532%。

By using corrugated pipe bundle instead of the bare pipe bundle with the same stiffness as its tube sheet , the axial thermal compensation can be increased by 40.4 percent , and the corresponding pulling-out force is 53.2 percent of that of the bare pipe bundle .

首先，建立了该平台整体三维有限元模型，结合北海波浪长期分布资料，计算了72种波浪载荷工况下的整体结构应力，为管节点结构局部应力分析提供边界条件。

First , 3D finite element model of the rig is formed . According to wave long-term distribution of North Sea , stresses of the whole structure subjected to 72 wave loads cases are calculated , which supplies boundary conditions of local tubular joint models in local stress analysis .

16层螺旋CT的z轴空间分辨力测试水平螺旋管逆流层析仪

Measurement of z-direction spatial resolution for a 16-slice spiral CT system

轴力作用下TT管节点应力集中系数的参数公式

Parametric equation of stress concentration factor for tubular TT-joints subjected to axial loads

用导管法灌注的水下混凝土GB4084-1983承插式自应力钢筋混凝土输水管

Spigot and socket self-stressed reinforced concrete pipe used for water delivery

承载超声冲击方法改善高应力比加载条件管接头疲劳性能

Improvement of ultrasonic peening treatment on tubular joints under high stress ratio loading

管道应力计算中刚性管架热失载再分析

Further Analysis on Heat Duty Loss of Rigid Supports in Pipeline Stress Calculations