流动理论

分别建立等向强化的J2流动理论和J2形变理论，并对这两种理论作出比较。

Both the isotropic-hardening J2 flow theory and the J2 deformation theory were established , and then comparison were given between the two theories .

为小变形的TNT形变理论和流动理论，发展了有效的有限元方法。

Effective and robust finite element methods are developed for both infinitesimal TNT deformation theory and flow theory .

本文研究了在应变损伤材料中的动裂纹尖端弹塑性场假定介质服从J2流动理论，且损伤规律以幂函数应变弱化的形式渐进地给出。

In this paper the dynamic elastic-plastic field near a crack-tip running in a strain-damage material is investigated .

推导了MSG塑性流动理论的本构方程，其中考虑了摩擦应力的影响。

The constitutive relations of MSG flow theory are given , with consideration of the effect of friction stress .

分析还表明，大变形J2塑性流动理论对缺陷比大变形J2塑性变形理论更敏感。

The study proves that the J2 flow theory of large strain plasticity is more sensitive to the shape of the defect than the J2 deformation theory of large strain plasticity .

采用三维流动理论，改变叶片造型方法，控制水力损失和引入CFD方法是提升现有轴流泵叶片设计的主要策略。

The main strategy should include in itself the use of three-dimensional flow theory , improvement of vanes stacking skill , control of hydraulic losses , and use of CFD in vane design procedure .

以流体力学缝隙流流动理论为基础，给出气垫横向出流简化的N-S二维流动方程和连续方程，并对气垫缝隙流的具体流动模型展开了讨论。

Based on gap flow theory of hydromechanics , it gives two-dimension N-S equation and continuous equation of latitudinal flow of air-cushion , and discuses the model of gap flow of air-cushion .

发展MSG流动理论的有限元方法，并模拟了微压痕实验和静止裂纹问题。

For the flow theory of MSG plasticity , we developed a finite element formulation which is then used to study the problems of micro-indentation and fracture of static crack .

利用J2流动理论各向同性硬化原理，结合离散元方法，建立筒型基础土体本构关系。

The constitutive relationship of bucket foundation was analyzed by the principle of J2 flow theory and isotropic based on a deformable distinct element method .

本文采用有限元增量法对此进行了详细分析，导出了基于流动理论的塑性增量的本构方程及等强化材料在复杂应力状态下的Mises模型的本构矩阵。

Based on FEM and plastic increment in flow theory , a constitutive equation is derived , as well as a constitutive matrix of Mises model for uniform-strength materials under the action of complex stress .

在假定材料服从J2流动理论的前提下，应用应变弱化形式给出了近似损伤结果，推导了反平面剪切情况下的本构方程，并且给出了Ⅲ型动态扩展裂纹尖端场的渐近方程。

Assuming that the medium obeys the J_2 flow theory , the damage rule is given asymptotically in the form of power-law strain softening . For anti-plane shear problem , the constitutive relation is derived . The asymptotic equations of the dynamic elastoplastic field are given for mode ⅲ crack .

利用一种基于准三元流动理论S2流面的逆命题方程，研究了重气体离心压缩机三元叶轮的设计方法及提高性能的措施。

An inverse problem method based on s 2 flow surface theory of 3 D flow field has been developed to design centrifugal compressor impellers for heavy gases and some techniques to improve the performance of high pressure ratio impellers have been presented too .

以Biot理论和流体喷射流动理论为基础，从固液本构方程、流体动力学方程和广义达西定律出发，详细地推导出含油水两相流体孔隙介质的地震波传播方程。

In this paper , based on theories of Biot and squirt flow of fluids , the author derived the wave equations for seismic waves propagated in oil-and-water-bearing porous media via constitute relation , momentum balance , and generalized Darcy ′ s law .

根据J2流动理论并采用有限元法分析了小范围屈服条件下，各向同性幂强化材料及理想塑性材料中的准静态I型平面应力稳恒裂纹扩展问题。

Based upon the J2-flow theory , a finite element analysis of quasi-static , mode-I steady crack growth in plane stress under small scale yielding conditions was carried out for isotropic power law hardening and nonhardening materials .

传统方法将这两种力学机制分开、单独处理，并建立了基于宏观描述的BIOT理论和基于单个孔隙结构的喷射流动理论，这些理论在实际应用中暴露出很大的局限性。

Putting these two kind of mechanical mechanism to separate and process independently and building separately BIOT theory based on macro-description and jet flow theory based on individual porous structure in traditional approach , there is strong limitation in real application of these theories .

建立了大间隙环流的三维动力学模型。该模型采用了Hirs整体流动理论和Moody壁面摩擦系数方程，考虑了壁面摩擦的影响，更为合理。

A dynamic model for analyzing the dynamic characteristics of 3D large gap annular flow was developed based on Hirs ' bulk flow theory and Moody 's fraction factor equation , and the effects of wall fraction was introduced .

本文依据Kirchhoff薄壳理论与J2塑性流动理论，提出了分析轴对称刚性冲头胀形成形的大变形弹塑性拉格朗日有限元分析的数学模型。

According to Kirchhoff 's theory of elastic-plastic finite deformation of thin shell and the theory of J2 plastic flow , a mathematical model is proposed for large deformation elastic-plastic Lagrangian finite element analysis of rigid punch made of thin metal plate .

本文针对基于细观机制的应变梯度塑性理论进行了一系列研究，主要取得了以下成果：1.推导了MSG塑性流动理论的本构方程，其中考虑了摩擦应力的影响。

In this paper , some problems of the mechanism-based strain gradient plasticity are researched . The following objectives have been achieved : 1 . The constitutive relations of MSG flow theory are given , with consideration of the effect of friction stress . 2 .

基于润滑近似理论和Nusselt液膜流动理论建立了一个描述固体相变材料在热球体外表面上接触融解的数理模型。

Based on the theories of lubrication approximations and Nusselt liquid film flowing , a model describing close contact melting of phase change solid around a hot sphere is developed by applying a more stringent energy balance relation at the two phase interface .

其次，建立了新的土颗粒本构关系，利用J2流动理论及各向同性硬化原理计算土体颗粒在渗流力作用下的弹塑性变形，利用离散元法求解土体骨架的体应变；

Second , the new constitutive relationship of soil particulate has been solved , the elastic-plastic deformation of soil particulate under flow force has been solved by applying the principle of J2 flow theory and isotropic , the volumetric strain is solved by the discrete element method ;

采用非等熵不稳定流动理论对390Q柴油机的进排气系统进行了计算，介绍了系统边界条件的处理、系统的简化以及参数的确定。

Calculation using non-isentropic unstable flow theory has been made for the intake and exhaust system of 390Q diesel engine . The treatment of the system boundary conditions , system simplification and data defination are discussed .

本文将主要运用精英循环理论和新结构主义社会学家皮奥里（J.Piore）的二元劳动力市场理论以及其它社会分层与流动理论等进行分析。

The theoretical foundation is made up by the theory of elite circulation , the dual labor market theory by J.Piore , and some other theories like social stratification and mobility and so on .

基于三维流动理论的液力变矩器设计流程

Design flow of toque converter based on three dimensional flow theory

本文提出一种弹塑性有限变形的拟流动理论。

A Quasi-Flow Theory of elastic plastic finite deformation is proposed .

双基火药螺旋挤压的等温粘性流动理论

The Isothermal Visco-Flow Theory of Screw Extrusion for Double-Base Propellant

高雷诺数流动理论、算法和应用的若干研究进展

Some advances in high Reynolds numbers flow theory , algorithm and Application

盐析流动理论研究综述

Review on the Theoretic Study of Salt - Out Flow

基于两相流动理论的点传火优化仿真

Optimization Simulation of Ignition and Flame Spreading Based on Two-phase Flow Theorem

欠平衡钻井多相流动理论与计算分析

A dynamic modeling of underbalanced drilling multiphase-flow and numerical calculation

变偏心度环空中流体流动理论分析与数值模拟

Theoretical analysis and numeral simulation of the fluid flow in skewed Annuli