查询词典 strain theory

Based on the elastic-plastic increment theory the bearing capacity of concrete gravity dam is studied using stability and analytic method expressed in strain space.

混凝土重力坝的承载能力是高坝设计中重要的研究课题。

According to the entire theory of plastic mechanics,the relationship between equivalent stress and equivalent strain of circular chamber plastic zone in the complex stress state is deduced from nonlinear softening constitutive relation of rock under uniaxial compression.

依据塑性力学全量理论，将岩体单轴压缩的非线性软化本构关系推广，得到复杂应力状态下圆形硐室围岩塑性区的等效应力与等效应变关系；籍以求得应变非线性软化的圆形硐室围岩塑性区半径、弹塑性区应力、应变和位移；进而求得相应情况下的硐室围岩平衡方程、地应力与硐室周边位移关系以及围岩压力方程。

The elastic constants of bulk lithium with hexagonal close-packed structure under high pressures have been calculated, by using Density Functional Theory and the relationship between stress and strain.

採用密度泛涵理论第一原理贋势方法，利用应力和应变的关係计算了压力下六角密堆结构金属鋰的弹性常数。

In this paper, the basic theory and work principle of cellular automata were introduced concisely. The influence of strain-rate and temperature on the number of nucleation and the mean size of R-grain, as well as the influence of cooling on ultimate microstructure of blade after forging finished off were considered. The microstructure evolution was simulated successful based on the DEFORM-3D. The simulated results agree well with growth kinetics of dynamic recrystallization of classical theory and physical experiment.

文章介绍了元胞自动机模型的理论基础和工作原理，并根据叶片模锻成形的特点，综合考虑应变速率、变形温度对再结晶形核率与平均晶粒尺寸，以及终锻冷却对叶片锻件最终组织的影响，在DEFORM-3D平台上，成功地仿真了叶片模锻过程中的微观组织演变，得到了同经典理论分析和物理实验结果吻合较好的动态再结晶动力学特征。

According to today's elastic-plastic theory, cross-flow rule or prandtl-Reuss theory is generally used to determine the direction of increment of plastic strain when the material entered yeild phrase.

当前土体弹塑性理论在如何确定材料屈服后塑性应变增量方向的方法一般采用正交流动法则和Prandtl—Reuss理论。

All specimens were broken with brittle fractures under linear elastic plane strain conditions, and the extending di- rection of the cracks appeared to agree well with the three existing theories, e.g., the theory of maximum stress, the theory of ...

结果表明：复合型裂纹的脆断开裂方向与现有的三种复合型理论符合较好；但是，复合型裂纹扩展阻力随K_Ⅱ/K_Ⅰ比值增加而增大，与现有复合型理论差别较大。

The stress and strain concentration region of the shaft sidewall under the three loads,and the correctness of lyophobic additional force theory is demonstrated.It can guide the shaft sidewall design theory and the determination of strengthening region.

确定了立井井壁在这三种荷载综合作用下的应力、应变集中区，论证了井壁破坏理论中疏水附加力理论的正确性，对井壁设计理论以及加固区域的确定提供了一定的理论指导。

Testing results of piles under low strain integrity are normally interpreted using one-dimensional stress wave theory. While one-dimensional stress wave theory is acceptable for pile-driving analysis the responses of piles integrity tests can not be adequately simulated when the hammer and the incident wave length are small in relation to the diameter of the pile.

基桩动测问题的理论基础一维应力波理论只有在锤径桩径比、波长桩径比、桩长桩径比足够大时才能近似成立，否则该问题实际上为应力波在柱体中传播的三维问题。

The calculating methods of systems damping ratio based on the classical damping theory and the modal strain energy theory was compared in detail.

针对系统阻尼对桥梁设计反应谱的影响，列举了包括直接位移法在内的几个影响系数计算公式，分析了其中的异同。

The drawing and extruding problems are analyzed and calculated by means of the theory and finite element program in this paper. It has been proved that the theory of large strain elastic-plastic finite element and elastic-plastic hydrodynamic lubrication has a wide practice value.

应用本文的理论和有限元程序，分析和计算了拉拔和挤压实例，证实了有限变形弹塑性有限元法和弹塑性流体动力润滑理论在金属塑性成形领域中具有广泛的实用价值。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。