查询词典 fatigue

The current research points out that for the CFCHS joints the linear extrapolation method can be used for chords,whereas the quadratic extrapolation method must be used for braces.The hot spot stress distributions on the CFCHS joints tend to be more uniform and their SCFs become smaller significantly,compared with the CHS joints.Axial tension on the brace puts the CFCHS joints at a disadvantage,which produces higher SCFs than axial compression.The effects of nondimensional geometric parameters β,τ and γ on SCFs of the chords of the CFCHS joints are basically the same as those of the CHS joints,but for the braces,there is a bit difference in the effects of parameters β,τ and γ between the two kinds of joints.Concrete has the function of improving the CFCHS joint rigidity and then decreasing SCFs which is expected to increase fatigue strength,but concrete strength grade does not exert significant influence on SCFs.

研究表明：CFCHS节点的热点应力，对主管可采用线性外推方法，对支管需采用二次外推方法；相比CHS节点，CFCHS节点的热点应力分布趋于均匀，SCF显著减小；CFCHS节点支管轴向受拉比受压不利，SCF增大；CFCHS节点几何参数β，τ，γ对主管SCF的影响效应与CHS节点基本一致，但是对支管SCF的影响效应与CHS节点有些差异；混凝土的作用主要是改善CFCHS节点刚度，从而降低SCF，并预期可提高疲劳强度，但混凝土自身强度等级的高低没有显著影响节点的SCF。

Not only that, the body of fatigue in the brain when many functions are affected and people into exhaustion, listlessness of the sub-health state.

不仅如此，人体在脑部疲劳的时候，很多功能都会受到影响，使人陷入疲惫、无精打采的亚健康状态。

Thus, the model shows directly functional relationship between contact fatigue strength, factor of biassed load etc.

本文还证明了ISO标准的滚动轴承疲劳寿命计算公式为本文的强度模型的一个特殊形式。

The statistical analysis of experiment results shows that both of the fatigue life and the strength performance of several composites in common use follow the logarithmic normal distribution or Weibull distribution, thus their probability models are given.

文中通过对几种常用复合材料的实验结果统计分析，发现复合材料疲劳寿命和强度性能遵循对数正态分布或Weibull分布，从而建立其概率模型，并寻求到强度性能的最大标准差，为复合材料可靠性设计奠定了基础。

The fatigue life followed the logarithmic normal distribution or the two-parameter Weibull distribution by the probability regression method.

为研究预腐蚀对疲劳寿命的影响，进行30CrMnS iN i2A和LC4CS试件加速预腐蚀不同时间后的成组随机谱下的疲劳试验，采用概率回归方法对预腐蚀疲劳寿命分布特性进行检验，表明可采用对数正态分布和双参数威布尔分布描述疲劳寿命分布特性。

Using the method of probability statistics,the relationship between safety life and experiment life was theoretically obtained at small-number specimen experimental conditions when the fatigue life obeys logarithmic normal distribution.

利用概率统计的方法，得出了在小样本实验条件下，当疲劳寿命服从对数正态分布时安全寿命与中值实验寿命之间的关系。

Owing to the test of fatigue life,possesses a rather big difficulty and its testing data have the characteristics of strong scatterence and if a prediction is made from using grey-forecasting model GM(1,1,thus its prediction value would get a rather big error compared with the real result,This paper hereby put forward a kind of new method to simulate the test.let the data be firstly processed into logarithmic series so as to reduce the scatterence of data,and then carry out the prediction by the use of grey-forecasting model.

由于疲劳寿命试验具有难度较大，其实验数据具有分散性强的特点，如果直接用灰色预测模型（GM（1，1））作预测，其预测值与真实结果的误差较大。在此提出一种试验仿真的新方法。首先将数据处理成对数序列，以降低其数据分散性；然后再用灰色预测模型进行预测。

The analysis of an example shows that a lognormal distribution is the best fit for fatigue life.

另外，还分析了初始裂纹尺寸和材料的断裂韧性对身管疲劳寿命的影响。

It is shown by test results that at a given equivalent stress amplitude the constant amplitude fatigue life follows the lognormal distribution.

结果表明，在同一应力水平下，所用试样的常幅疲劳寿命服从对数正态分布。

Given that product life follows lognormal distribution,fatigue life scatter factor method is applied to evaluating the reliability of product with 1 or 2 samples.

引言针对小子样产品，文献 [1～ 2 ]提出了基于经典方法、通过提高产品承受的应力并运用应力强度干涉模型进行产品可靠性评估。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。