查询词典 strain theory

For the first time, we observe the polarization effect in two-core fiber interferometers, for which we give our analyses and explanations in the thesis. This effect can be used to improve the S/N ratio and the stability of the system. Meanwhile, we did experiments to measure strain within a deformed cantilever, and the results are in agreement with our theory.

本文分析探讨了双芯光纤应变干涉测量的基本原理，对实验系统及现象进行了较为详细的分析，首次发现并验证了双芯光纤干涉中存在的偏振效应，提出了提高系统信噪比和稳定性的新方法；同时进行了一些实验研究，取得了与理论基本一致的结果。

The molten polymer's entanglement network is assumed to deform nonaffinely and the transient network structural theory with the revised upper convected Maxwell constitutive equation is used to establish a new nonaffine network structural model of molten high polymer in a sinusoidal strain field.

在正弦应变作用下，假设聚合物熔体的缠结网络形变是非仿射的，运用瞬态网络结构原理，并对上随体Maxwell本构方程加以改进，从而得到一个适合于振动剪切作用下的聚合物熔体的非仿射网络结构模型。

Therefore, to study the information of responses of aquifer to the crustal stress-strain is of a great theory and practice significance in understanding the mechanism of energy transport in the hydrogeologic-related crustal deformation zone and exploring the short-term and imminent forerunning affects of earthquake.

因此，研究含水层的地壳应力应变信息响应，对深入认识地壳水文地质变形区中能量传递的机理、对探索捕捉地震短临前兆具有重要的理论及实际意义。

An Mohr circle is graphed according to values of the traixial strain and confining stress. Besides, failure theory and strength parameters: C andΦare obtained through analyzing the curve fitting.

2根据砂岩的三轴峰值应力和围压，绘制了莫尔圆；采用回归分析得到了强度准则和强度参数C、Φ值等。

Low strain dynamic response theory is the basis of method in stress wave testing of anchorage system, which can be used to explain the dynamic reaction between anchor bar and surround rock, the mechanics of anchor bar stress wave testing.

锚杆—围岩结构系统的低应变动力响应理论是锚杆锚固系统应力波测试方法的理论基础，开展这方面的研究对于弄清锚固系统动测机理以及建立锚固体系损伤诊断和锚固质量评价具有十分重要的意义。

In this paper, incising blasting engineering in granite row stone exploitation as the research object, in order to analyze the fracturing mechanism principles of V-shaped notch blasting and the influence of blasting parameter changing to V-shaped notch blasting effect, the elastic-plastic isotropy and multi-notched hole of plane strain model is set up. Dynamical finite element analysis software ANSYS/LS-DYNA is applied to calculate dynamic stress distribution and its change rule of rock around notched holes and between two holes, and dynamic fracturing mechanism is analyzed with fracture mechanics theory.

文章以花岗岩荒料开采中的切割爆破工程实践为研究对象，为分析V形刻槽爆破成缝机理及爆破参数改变对刻槽爆破效果影响等内容，建立了各向同性脆性材料的多刻槽孔准平面应变模型，以显式动力分析有限元程序ANSYS/LS-DYNA为模拟运算工具，详细计算了在动载作用下槽孔周围及双孔连心线上岩体的动态应力分布与变化规律，并运用断裂力学理论分析刻槽爆破动态成缝机理。

These are references of theory and test for safety assess of reactors. The paper put forward the concept of decrease coefficient , and the actual calculation process of K〓 for forecasting the fatigue life of the structure. The research made it possible to forecast the fatigue life of damaged materials, and the prediction was based on the S-N curve from the fatigue test of the smooth material with controlled strain.

提出了疲劳寿命的减少系数K〓的概念，给出了计算K〓预测结构的疲劳寿命的具体过程，这一问题的研究使以平滑材料控制应变疲劳试验得出的S-N曲线图为基础来预测有损伤材料的疲劳寿命成为可能。

In order to deeply reveal the smoothing mechanism of roller burnishing and to overcome the difficulty in the selection of the burnishing cross feed dependent mainly upon experiences and hand feel, the roller burnishing process is taken as an issue of plane-strain mechanics and the micro-plastic deformation area is determined on the basis of the Von-Mises yield criterion and by using the Boussinesq-Flamant solution. Then, the contact pressure distribution is obtained based on the Hertz contact theory, and the stress distributions in the burnishing tool and the workpiece are respectively revealed.

为深入了解滚柱滚压表面光整机理，解决目前滚压量选择完全凭经验和手感的不足，将滚柱滚压加工过程视为平面应变力学情形，利用Boussinesq-Flamant问题的求解并根据Von-Mises屈服准则得出了滚压局部发生微塑性变形的区域，根据Hertz接触理论得出了滚压接触压力分布及滚压过程中工件和工具的应力分布。

The two definitions of dilatancy in slip line theory are clarified, and the generalized Mises yield criterion matching Mohr-Coulomb yield criterion in plane strain condition is put forward where the effect of dilatancy can be considered.

阐明了滑移线场理论中有关剪胀的描述，推导了平面应变条件下考虑剪胀角影响并与Mohr-Coulomb准则精确匹配的广义Mises准则，研究了剪胀对浅基破坏模式的影响。

In the nonlinear theory the deformation tensor can be expressed as the product of two tensors, one corresponding to a rotation and the other to strain, applied sequentially.

非线性理论中，形变张量表示为与旋转相对应的张量及与应变相对应的张量的乘积。

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。