应变

Base on the problem of large quantity fatigue loads on corroded R.C. structure and small quantity study of its mechanical property, bending resistance fatigue test of corroded R.C. beams is discussed in this paper. The influence of stress ratio and re-bar weight loss ratio on bending resistance fatigue performance of corroded R.C. beams are researched, and the relation between strains of corroded re-bars and fatigue life of beams are obtained. The main research contents and conclusions are as following: 1. Under the fatigue loads, the overstrain of concrete approximately coincidences three stages strain development and accumulation rule, and the mechanical property of concrete is deteriorated. The fatigue damage of concrete is accumulated. The overstrain of re-bars increases and the increase rate decreases.

鉴于实际工程中大量存在腐蚀钢筋混凝土结构承受反复荷载作用，但其力学性能研究不多的问题，本论文进行了锈蚀钢筋混凝土梁抗弯疲劳试验，研究了应力比和钢筋锈蚀率对锈蚀钢筋混凝土梁抗弯疲劳性能的影响，得出了锈蚀钢筋的应变与构件疲劳寿命之间的关系曲线，主要研究内容及结论如下：(1)在循环荷载下，混凝土残余变形基本符合三阶段变形规律，力学性能劣化，疲劳损伤积累。

At the strain rate range of 100-1000/s , the Cowper-Symonds overstress relation

4，在本实验研究所考察的应变率范围内，采用Cowper-Symonds本构方程

According to testing results, the stress-strain curve of the cemented soil stabilized the nanometer silica fume is fitted using a quadratic parabolic curve and expression equation for upward sector of the stress-strain curve is given.

根据试验结果，分析了纳米硅粉水泥土的变形特性，并对其应力应变曲线进行了二次抛物线拟合分析，推导了曲线上升段的表达式。

The established neural network can simulate the non-linear relationship of strain, J -integral and constraint parameter A 2 of specimen with crack.

结果表明，神经网络可以用来模拟带裂纹构件韧带上的应变值和 J -积分及约束参数 A 2之间的非线性关系。

Finally, axisymmetrical strain analysis program is work out using FORTRAN90 according to parametric finite element quadratic programming method and some key points about the program are explained.

最后，根据参变量有限元二次规划算法，用Fortran90 语言编制轴对称应变分析程序，对程序编制过程中的几个要点进行说明。

The wavelength of peak value changes with change of meeting an emergency and temperature.

这些峰值波长随着应变和温度的改变而改变。

Training curriculums place emphasis on both theory and practice, and include laws of the HKSAR, departmental rules and regulations, counselling, social work techniques, management,psychology, criminology, penology, first aid, foot drill, anti-riot drill, self-defence, emergency response tactics, adventure training, field training, Putonghua, Chinese writing skills and personal computer training.

训练课程着重理论与实践，科目包括香港特别行政区法例、部门规例及守则、辅导、社会工作技巧、管理学、心理学、犯罪学、刑罚学、急救、步操、防暴操、自卫、应变策略、冒险训练、实习工作训练、普通话、中文写作技巧和个人电脑训练等。注意，注意力集中

The higher-order asymptotic solutions of a quasi-static, steadily propagating Mode I plane strain crack in an elastic perfectly plastic material are studied.

本文研究了理想弹塑性材料中Ⅰ型平面应变准静态定常扩展裂纹尖端场的高阶渐近解。

Quantitative measurements also show that the bend sensitivity against the resonant wavelength shift has a periodic distribution along circular directiom.Based on these results,this paper proposes two approaches for sensor desi...

据此提出新型对弯曲不敏感的传感器和可调灵敏度弯曲传感器的设计方案，可望从根本上解决长周期光纤光栅在测量中存在的温度、应变或折射率与弯曲之间的交叉敏感问题

Under the conditions of a simple harmonic stress applied on the NLME, its internal friction is a periodic function with respect to time.

数值拟合的结果说明，铁粉热压期间的应变弛豫可以用这两个模型来描述，但用SNLS比用NLKE有更小的误差。

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。