应变

The machinery design in engineering of external pressed vessels is based on the mathematical model of critical press and metallic material's stress-straincharacteristic curves together with the nomography.

对于外压容器的机械设计，在工程上是以临界压力P_(cr的数学模型和金属材料的应力-应变特征曲线结合的图算法完成。

So, rubber's viscoelastic characters are researched by the characteristic nomography method in this article, when the stress wave transmits in rubber. And we get the stress'arithmetic solution and strain's arithmetic solution of any place of rubber parts at any time under the action of impact load.

本文又通过特征线解法，分析了橡胶在应力波传播过程中的粘弹性特性，得出了在冲击载荷作用下，橡胶部件的任意部位在任意时刻下的应力、应变数值解法。

Not only geodetic deformation are in non homogeneity for the space time distribution,but also deformation fields are in macroscopic similarity for the identical time interval.The inherited tectonic movement is a total tendency of recent crustal movement,and the m...

地壳运动过程中存在着区域应变能积累阶段和释放调整阶段，这可能是地震活动的相对平静与活跃的动力机制。1991年以来的地壳运动趋势分析，对判断该区域的应力状态和地震大形势具有一定的参考意义。

The modeling theories on dynamics of flexible multibody system are reviewed.In chapter 2, the geometric nonlinear relationship between strain and displacement is utilized in describing the nonlinear displacement field. The FEM discrete model of the arbitrary flexible beam in non-inertial frame is derived by the Kane's method.

第二章从几何非线性应变-位移关系描述非线性变形场，使用有限元方法离散三维任意截面柔性梁，用Kane方法对离散的模型建立动力学方程，并通过算例验证了算法的正确性和可行性。

The power law model of the viscosity in terms of the equivalent strain rate is used to model the non-Newtonian character of the fluid.

利用粘性系数关于等效应变速率的指数模型来模型化流体的非牛顿特性。

The classical and nonclassical nonlinear strains of saturated rocks are obviously larger than those of dry rocks in accord with the PM space density distribution.

饱和岩石的经典和非经典非线性应变比干燥岩石有显著的增长，与模拟的PM空间NCU密度分布结果是一致的。

The ratio of the magnitude of an applied shear stress to the velocity gradient that it produces; that is, a measure of a noncrystalline material's resistance to permanent deformation.

剪切应力数值与其产生应变速率的比值叫粘性，用来衡量非晶材料抵抗永久变形的能力。

With the development of the theory of constitutive model of soil, the elastic constitutive model was displaced by some non-linear constitutive models such as the Duncan-Chang model, Cam-clay model, etc, which leads to that the Biot′s consolidation theory has developed from elastic into nonelastic.

随着对岩土本构关系研究的深入，经典Biot理论中土体采用弹性应力应变关系的假定逐渐被一些非线性本构关系取代，如Duncan-Chang模型、剑桥模型等，将Biot固结理论由线性推向了非线性。

For Mode III problems,the local nonhomogeneity of interlayer and thedistribution parameter determine the stress intensity factor and strain energy releaserate.

对于III型问题，界面层材料局部非均匀性及分布特征参数反映了应力强度因子和应变能释放率的特征。

First, FEM with nonhomogeneous elements is used to analyze the fracture problem of two dimensional FGM strips with inner cracks or edge cracks in the plane strain condition. The influences of geometric parameters, material graded modality and nonhomogeneity constant of the structure on the stress intensity factors at crack tips are investigated.

首先，本文采用该方法研究了平面应变状态下，含有内部裂纹和边裂纹的二维功能梯度条的断裂问题，分析了结构的几何参数、材料梯度形式和梯度参数对裂纹尖端应力强度因子的影响。

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。