A mean strain or prestrain, as in FIG. 83, can under certain conditions reduce the subsequent fatigue life.
一个如图83所示的平均应变或预应变，在某种情况下，能够缩短以后的疲劳寿命。
The cumulative plastic strain energy increases with the increase of the loading frequency and stress level, which is linear with fatigue life on semilog coordinate.
累积塑性应变能随着加载频率及应力水平的增加而增加，与疲劳寿命在半对数坐标下呈线性关系。
The results show that nitrogen has remarkable influences on rolling contact fatigue life and plain strain fracture toughness, and little influences on wear resistance.
结果表明，含氮量对滚动接触疲劳寿命及平面应变断裂韧性具有很显著的影响，而对耐磨性影响很小。
Moreover, this paper lists both static and strain fatigue parameters of this material for material design, selecting and life prediction.
还列表给出车轮钢的全部应变疲劳参数和与之对应的静态参数，可供设计选材，寿命估算时使用。
At low and intermediate total strain amplitudes, the fatigue life was found to decrease with the increasing of temperature.
结果表明，在中等应变幅值之下，材料的疲劳寿命随温度的增加而降低。
This method can be applied to designing sample components for fatigue test as well as to forecasting various fatigue life of component from stress fatigue to strain fatigue.
该方法不仅可用于构件从应力疲劳到应变疲劳的各类疲劳寿命预测，还可用于构件的疲劳试验模拟件设计。
The results of fatigue test of reactor manifest the fatigue life of the reactor materials under different strain and stress condition.
反应器的疲劳试验结果充分反映了反应器材料在不同应力应变水平下的疲劳寿命。
The uncertainties of pressure vessel result in the randomness of local stress, local strain and fatigue life.
由于压力容器构件的不确定因素，造成了构件局部应力应变响应和疲劳寿命具有随机性。
The point of intersection of elastic line and plastic line moves toward the low cycle life with the hardness of the spring steel raised after tempering from the strain fatigue curve.
在应变疲劳曲线上，弹性线和塑性线的交点随弹簧钢回火后硬度的升高而向低循环寿命移动；
To model the random cyclic strain life relations during low cycle fatigue, probability based cyclic strain life curves are suggested.
引入了概率循环应变—寿命曲线描述低周疲劳循环应变—寿命试验数据的分散性。
The uncertainties result in the randomness of local stress, local strain and fatigue life.
这些不确定因素导致构件的局部应力应变响应和疲劳寿命响应具有随机性。
In the test, it is verified that the random cyclic constitutive relations, like the wide recognized random cyclic strain-life relations, is an intrinsic fatigue phenomenon of engineering materials.
试验验证了以前在焊缝金属试验中的发现与推断，即工程材料的循环本构存在随机性，与循环应变-寿命关系的随机性一样，是固有的疲劳现象。
Variable-amplitude fatigue tests for concrete in tension under single and bi-lateral pressures are conducted. Consequently, the fatigue life and residual strain are obtained.
本文进行了混凝土分别在单、双向侧压作用下受拉变幅疲劳试验，得到了疲劳寿命和残余应变。
By analyse structure's strain, we can gain lots of information including the danger cross section and fatigue level. Also we can estimate the structure's life.
通过对结构应变进行分析，可获取结构的危险截面和疲劳程度等信息，并可对结构的寿命进行估计。
According to the characteristics of loads on blades, a model for estimating fatigue life of blades is presented based on three-dimensional finite element method and improved local strain method.
根据汽轮机低压叶片所受载荷的特点，建立了一种基于三维有限元法和改进局部应力应变法的叶片疲劳寿命预测模型。
A general life model adapted to both stress fatigue and strain fatigue is deduced, through analyzing the influence function of strain distribution on life.
本文通过应变分布对寿命的影响函数分析，导出了一种适用于应力疲劳和应变疲劳的通用寿命模型。
The individual cycle-strain hysteresis loops were recorded, and the cycling response and high temperature low cycle fatigue life were obtained.
记录了各自的循环应力—应变滞后环，得出了试样的循环响应特征和各试样的高温低周疲劳寿命。
The 45 steel natural relation of dead load with cyclic load and low frequency and high frequency strain cycling fatigue life are studied.
本文对45号钢在静载荷下与在循环加载下的本构关系进行了探讨，并给出了低周与高周应变循环的疲劳寿命表达式。
The results showed that the resistance of fatigue life gage would change with the accumulative cyclic strain.
实验结果表明，疲劳状态检测元件的阻值能够根据累积循环应变历程产生相应的变化。
The strain energy release rate of the crack propagation was calculated by using virtual crack closure technique, and fatigue life was forecasted.
采用虚拟裂纹闭合技术计算裂纹扩展的应变能释放率，并对裂纹扩展寿命进行计算。
The fatigue life is obtained by using specimens without crack and by a special analysis based on local stress-strain method in which remembrance characteristics are considered.
采用无裂纹缺陷试件进行疲劳试验得到试件的疲劳寿命，同时利用考虑了记忆特性的局部应力应变法对试件的疲劳寿命进行定量分析。
The strain-life curves are essential in order to apply the local stress strain approach for fatigue life prediction.
用局部应力应变法进行疲劳寿命估算，必须使用应变—寿命曲线。
A new exponential dissipation model is presented to describe this bilinear material's plastic strain amplitude-fatigue life relation.
利用本文建立的指数衰减模型能够较好地描述材料的非线性塑性应变幅与寿命之间的关系。
According to the result of fatigue experiment, it gets fatigue traits of ti alloy TC11, which is the relationship curve of the maximum loading strain range with fatigue life.
根据疲劳试验结果，获得了TC 11钛合金焊接接头的疲劳特性，即最大加载应变与疲劳寿命的关系曲线。
In This paper, the method of local stress and strain was used to predict the fatigue life of bus body parts under high cycling load.
本文以大客车车身典型零件为研究对象，采用局部应力应变法预测承受高周载荷零构件的疲劳寿命。
In This paper, the method of local stress and strain was used to predict the fatigue life of bus body parts under high cycling load.
本文以大客车车身典型零件为研究对象，采用局部应力应变法预测承受高周载荷零构件的疲劳寿命。
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