Pressure vessel; welding; weld; coupling field; residual stress
压力容器；焊接；焊缝；耦合场；残余应力
It is found that results obtained with this method are different from those without considering the pre-stress and coupling effects.
结果表明在旋转预应力与风机流场的流固耦合作用下，频率与模态有较为显著的改变。
This paper performs the stress analysis of autofrettage d hydraulic coupling outer sleeve for ideal elastic-plastic materials, deduces the formula of residual stress with autofrettage d stress uninstalled, and gets relation between Bauschinger effect and the best diameter rate of no-producing reversed yield for ideal elastic-plastic materials.
本文对液压联轴节外套进行了理想弹塑性自紧应力分析，推导出外套弹塑性自紧卸载后的残余应力公式，得到了全塑性自紧卸载不产生反向屈服的最佳外内径比与鲍辛格效应系数间的关系。
It is shown that the contact interaction enables bottom drillstring to whirl backward, and then an alternate bending stress with higher frequency is produced. So the drillstring fatigue failure could be accelerated. At the same time, a quite strong wallop force of high frequency is produced on the contacting point, and the contacting zone is next to the screw coupling of drill collars. It will easily result in the failure of screw couplings. The research results provide theoretical basis for the prevention of drillstring failure.
研究表明，下部钻柱与井壁的碰摩作用使下部钻柱反向涡动，产生高频的交变弯曲应力，会加速下部钻柱疲劳破坏；下部钻柱与井壁接触点处存在较大的高频冲击力，并且接触区域靠近钻铤螺纹联结处，更容易诱发螺纹联结处失效，该研究成果可为预防钻柱失效提供理论依据。
Considering seep, on foundation of stress coupling theory, use water to spend dam of force of overweighted law counterpoise and its ground system again the condition getting power in running a course actually undertakes numeric imitate, provide realer enumerated data for choppy criterion thereby, right overweighted coefficient and traditional convergent criterion criterion do comparative analysis.
在考虑渗流—应力耦合理论基础上，采用水重度超载法对重力坝及其地基系统在实际运行过程中的受力状态进行数值模拟，从而为突变判据提供较实际的计算数据，并对超载系数和传统的收敛准则判据做对比分析。
The research of instability has achieved a lot of results and solved a lot of practical problems. But the solution and mechanism for dynamic buckling of cylindrical shells in the effect of coupling stress wave is very hard to research, especially for non-axisymmetric buckling in symmetric structure and load.
目前虽然已有大量的研究成果并解决了不少的实际问题，然而在耦合应力波效应下研究圆柱壳的动态屈曲问题是困难的，特别是在对称结构和载荷下的非轴对称屈曲问题。
A macro and micro and chemical element analysis was made on fracture of ruptured coupling bolts, torsion test was performed and stress analysis and calculation were made, the results show that when the steam turbine had failure, MP-LP rotor coupling bolts and generator-exciter rotor coupling bolts failure were classified as overload shear fracture with partial deformation.
对215MW汽轮机断裂的对轮螺栓做断口宏观、微观分析，化学元素分析，扭转试验及受力分析计算，结果表明汽轮机组在事故中，中压-低压转子对轮螺栓和发电机-励磁机转子对轮螺柱的失效类型为：过载剪切断裂，同时局部挤压变形，这是由于事故过程中轴系受到冲击扭矩作用而引起的。
In this paper, a three-dimension finite element calculating model for thermo-stress coupling analysis is developed with the finite element software package ANSYS and is used to calculate the practical thermo-stress distribution in the supporting nozzle plane board.
文中利用ANSYS有限元分析软件建立了铸嘴支撑面板温度-应力耦合分析的三维有限元计算模型，并对实际工况下面板的热应力分布进行了计算。
Based on the theory of thermo-elastic-plastic, changes of material properties with temperature were considered, and the strain-stress-temperature coupling constitutive equations on thermo-elastic-plastic of flexural reinforced concrete members were deduced.
在热弹塑性理论的基础上，考虑了材料性能随温度的变化，导出了钢筋混凝土受弯构件热弹塑性问题的应力-应变-温度耦合本构方程。
In the meanwhile, according to thermodynamics, the magnetomechanical coupling equation is also established, and the corresponding constitutive relation between the incremental magnetic flux and incremental stress is attained.
同时，还从热力学的角度出发，建立了铁磁材料的磁力耦合方程，得出了相应的磁通量增量与其应力增量之间的本构关系。
Keywords: building steel; magnetomechanical coupling; stress sensing; nondestructive testing
中文关键词：建筑钢材；磁-力耦合；应力感应；无损检测
Ji H G, Cai M F Coupling constitutive relation between ae parameter and stress-strain and its application.
纪洪广，蔡美峰。混凝土材料声发射与应力-应变参量耦合关系及应用。
In addition, this coupling is closely related to the remote stress triaxiality.
基于SG应变梯度形变理论和含孔洞的无限大体模型，研究了三轴应力场中孔洞形状效应和尺度效应对其长大的耦合作用。
The VCL method and the displacement method are used to calculate the Stress Intensity Factors of semi-elliptical surface crack at the root of pipe screws, on the basis of which a simplified calculating model for screws contact is put forward so as to analyse the fracture intensity for oil drill pipe screw coupling. For the semi-elliptical surface crack with different shape and deep ratio at the root of female and male screws and the corner of male flange, the SIF has been studied systemically under inter-pressure, tension, bend and torsion loads and the approximate formulas encluding the structure parameters of oil drill pipe screw coupling, deep ratio and the shape parameters of surface crack are developed.
对工程实际中的多种石油钻杆接头螺纹连接件，就公螺纹齿根、母螺纹齿根、公螺纹台阶转角处存在的不同形状、不同厚度比的半椭圆表面裂纹，在拉伸、内压、弯曲、扭转多种载荷作用下的应力强度因子作了系统研究，在大量有限元计算基础上，建立了包含接头结构参数、裂纹形状、厚度比在内的近似计算公式。
By the finite element analysis code ABAQUS and the function of coupling process between heat and stress, the methods of plug welding and fillet welding were simulated for 304 stainless steel dimple jacket and the distribution of welding residual stress was obtained.
运用大型有限元分析软件ABAQUS的热—力耦合功能，对304不锈钢蜂窝夹套的塞焊和填角焊两种焊接方式进行有限元模拟，得到了这两种焊接接头的残余应力分布情况。
After profound systematic theoretical and testing reasearch of metal rubber mechanical property, manufacturing technology, macro-micro constitutive relation and metal rubber spring coupling technique, we present deep intercross wiring manufacturing technology, establish infinitesimal spring constitutive model, non-symmetry elastic hysteresis constitutive model, dissipation factor testing method based on equivalent stress function and key technique methods of metal rubber elastic damping fabrication.
我们针对金属橡胶力学性能、制造工艺、宏观、微观本构关系及金属橡胶制造弹性联轴器关键技术开展了系统深入的理论与实验研究，提出了基于深度交叉钩联编织技术的制造工艺方法、建立了微元弹簧组合的微观本构关系、非对称弹性变形滞迟泛涵宏观本构关系、基于等效应力函数概念的损耗因子测试方法和金属橡胶制造弹性阻尼元件关键技术。
Coalbed reservoir is depleted, stress and strain of coalbed porous medium are changed because of changing of fluid pressure gradient, and result in effective permeability and porosity become lower, and production are decreased because of fluid-solid coupling effect. A dual porosity media fluid-solid coupling mathematical model of exploitation coalbed methane by gas injection is established.
由于排采降压在孔隙流体压力变化的范围内会引起储层孔隙介质的应力和应变的变化，造成有效渗透率和孔隙度的降低，同时也影响注气和产气的动态参数。
With the need of engineering, the research on fluid and stress coupling has become a hot issue in recent years at home and abroad.
随着工程应用发展的需要，裂隙岩体的流固耦合研究已成为国内外研究的热点问题。
In this paper, for a base of a heavy type universal coupling a analysis with finite element method have been done. From here on, the rules of it's stress and deformation have been got.
本文用有限单元法，对大型十字轴式万向接轴的轴承座进行了分析，得出了其应力和变形规律。
Aimed at the minimum maximum principal stress, based on three dimensional finite element analysis, with the help of FEM software, an optimization method is used to design the main parameters of the joint cross of universal coupling.
利用ANSYS软件对轧机主传动系统的万向联轴器十字轴进行三维有限元分析，在此基础上，以十字轴所承受的最大主应力最小作为追求目标，在ANSYS软件中对其主要参数进行了优化，得出了较为理想的结果。