斜管开裂的主要原因是温度场下的低频应力疲劳破坏。
The main reason of inclined pipe fracture was low frequency stress fatigue failure at temperature field.
通过应变分布影响系数把应变疲劳与应力疲劳联系起来。
Strain fatigue and stress fatigue are related by the influence coefficient of strain distribution.
结果表明，该轴断裂是由于轴表面存在焊接缺陷，在旋转弯曲应力作用下产生低应力疲劳开裂。
The results showed that the weld detects on the surface of the axle was the reason to cause low stress fatigue under rotation bending stress which finally lead to the fatigue cracks on the axle.
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。
A general life model adapted to both stress fatigue and strain fatigue is deduced, through analyzing the influence function of strain distribution on life.
结果表明：K417G合金无涂层和涂覆热障涂层状态下的低周疲劳均属于应力疲劳，以弹性损伤为主；
The results indicate that the LCF of K417G alloy and K417G alloy with TBCs are stress fatigue, and the primary damage of LCF processing is elastic damage.
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。
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.
试验分析说明铝合金5083纵向角接板焊接接头名义应力和热点应力疲劳s - N曲线试验数据拟合斜率为5。
The test analysis shows that the fitted slope of test data to nominal stress and hot spot stress S-N curves for aluminum 5083 welded joint with longitudinal fillet welded gusset is 5.
本文的主导思想是讨沦和分析冲击载荷下螺旋弹簧质量系统的动态响应，并应用名义应力疲劳设计方法估计其平均寿命。
The thought of this paper is to discuss on and analysis to dynamic response of HSMS under impact load, and estimate its mean life based on noted stress fatigue design method.
随着机群服役时间的增加，对嵌入式无线应力传感器的需求也在不断的增加，通过这些传感器对应力积累进行探测和跟踪，避免飞机机体发生可能的疲劳和破裂。
As the fleet ages, there's an increasing need for embedded wireless strain sensors capable of detecting and tracking accumulated strains — "precursors" to crack initiation, according to the official.
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 cumulative plastic strain energy increases with the increase of the loading frequency and stress level, which is linear with fatigue life on semilog coordinate.
还会形成穿透型裂纹，造成镀层下本体金属的疲劳或应力腐蚀裂纹。
Through-thickness cracking also can lead to fatigue or stress corrosion cracking of the base metal beneath the plating.
因此，在对局部结构进行疲劳强度分析时，应考虑错位对于应力集中系数的影响。
Thus, the stress concentration factor due to the misalignment should be considered in the analysis of fatigue life of the local structures.
这种容器的最大优点是在绕制过程中获得高预压缩应力，显著减少疲劳失效的危险性。
A tremendous advantage of these vessels is that high compressive stresses are induced during winding. This Prestressing greatly reduces the risk of fatigue failure.
通过计算证明引起断裂的根本原因是动应力超过了梁的许用疲劳极限，另一原因是梁的结构不合理。
The primary cause of breakage is that the dynamic stress exceeded the allowable fatigue limit of the beam, and another cause is that the structure of the beam is unreasonable.
疲劳强度低于弹性极限或屈服强度等静应力强度。
Fatigue strength is less than static stress strength such as elasticity limit, yield strength.
在热交变应力的作用下，热疲劳是铸铁工件的主要失效形式之一。
Under act of the alternating thermal stress, thermal fatigue is one of theprimary invalidity forms of cast iron workpiece.
在应力比，残余应力对疲劳裂纹扩展的影响方面获得了有价值的成果。
We get valuable results about the effect of the stress ratio and residual stress on fatigue crack growth.
作者就赫兹应力和旋转弯曲应力联合作用下的接触疲劳进行实验研究。
Experiments of contact fatigue under the action of combined stresses-Hertsian stress and rotating bending stress were carried out.
采用焊点疲劳寿命预估方法，通过有限元分析并结合应力计算，即可计算出实际载荷工况下的焊点疲劳损伤。
With the welding spot fatigue lifetime pre-estimation method, by combination of the finite element analysis and stress calculation, the welding spot fatigue damage under actual load can be calculated.
疲劳应力范围必须与EN, 10138或相应欧洲技术认可中的规定一致。
P The fatigue stress range for prestressing tendons shall be in accordance with en 10138 or given in an appropriate European Technical Approval.
承受不同循环载荷共同作用的压力容器，其概率疲劳寿命和在高应力水平上的循环载荷有着密切的关系。
The probability fatigue life - span of pressure vessel under the action of different cycle load is closely related to the cycle load with high stress.
结合原有的混凝土疲劳损伤模型，建立了预应力钢纤维混凝土板的疲劳损伤演变方程。
Based on the fatigue cumulative damage models, a damage evolution equation for flexural fatigue of SFRPC slabs is set up.
一种疲劳失效类型，循环应力是由于交变热应力引起的。
Thermal fatigue. A type of fatigue failure wherein the cyclic stresses are introduced by fluctuating thermal stresses.
给出了高强钢焊趾表面裂纹在压弯组合应力下应力强度因子及其疲劳寿命计算式。
The formulae for calculating SIF and fatigue life of surface crack at weld toe of the high-strength steel under the combination stresses were given out.
而交变应力集中是疲劳破坏的一个关键因素。
The concentration of alternate stress is a key factor of fatigue destruction.
而交变应力集中是疲劳破坏的一个关键因素。
The concentration of alternate stress is a key factor of fatigue destruction.
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