疲劳寿命估算。
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。
The strain-life curves are essential in order to apply the local stress strain approach for fatigue life prediction.
介绍了焊缝疲劳寿命估算的有效方法——VOLVO方法的步骤及原理。
The efficient method of seam weld fatigue life estimation----the procedure and principle of VOLVO method are introduced in this paper.
针对过盈螺纹的疲劳寿命估算进行了工作，求解应力是寿命估算的第一步。
An improved method of stress analysis about bolt screw with interference fitting is provided as the first step of fatigue life-prediction for the joint.
给出了采用热点应力法进行铸钢节点环形对接焊缝疲劳寿命估算的全过程。
The paper presents the life evaluating process of girth butt welds by hot spot stress method and the calculation methods of hot spot stress range.
还讨论了等损伤线的表达式，斜率变化和二级载荷下的疲劳寿命估算等问题。
The problems of quantitative expression of equivalent damage lines, the slope change of the lines and life prediction are also discussed.
提出了一个考虑应力集中和疲劳极限影响的缺口件频域随机振动疲劳寿命估算方法。
A frequency domain method for predicting the fatigue life of notched specimens under random vibration loading is presented.
这一循环参数分析和疲劳寿命估算方法为典型机翼下壁板结构的疲劳寿命估算建立了基础。
Through the cyclic parameter analysis and the method of fatigue life estimation, a basis for fatigue life estimation of typical lower-wing structure is established.
因此有必要通过实验及理论研究等工作，对公路桥梁伸缩装置进行疲劳破坏机理分析和疲劳寿命估算。
Therefore, it is necessary to analyze the mechanism of the fatigue damage of bridge expansion device and estimate its fatigue life by theories and experiment.
随机疲劳、混沌疲劳及复合材料疲劳寿命估算属疲劳学研究的三个重要前沿．给出了疲劳损伤的动态概率分布；
Stochastic fatigue, chaotic fatigue and the fatigue life estimation of the composite material are three important aspects in fatigue research. The fatigue damage probability distribution was given.
该方法使分散性很大的疲劳试验结果得以合理处置，从而可准确地提供试验数据，供作材料疲劳鉴定与疲劳寿命估算之用。
This method can make the fatigue test result with great dispersion be processed reasonably, so as to provide correct test data for appraisal of material fatigue and estimation of fatigue life.
运用本系统，用户只需通过简单的填写菜单就可以完成摩托车车架的静强度分析、模态分析、瞬态分析，并据此对车架进行疲劳寿命估算。
Customer can accomplish modal, static and transient analysis easily by filling in some menu. Based on this, a fatigue life of motorcycle frame was estimated.
本文采用断裂力学方法来估算结构构件的疲劳寿命，这其中主要围绕裂纹扩展速率表达式展开研究。
Fracture mechanics is adopted to estimate the fatigue life of structural members, and among the rest, crack growth rate formula is studied.
本文提出了一种新的钢轨疲劳寿命的可靠度估算方法，使可靠性分析第一次进入钢轨的寿命估算。
This paper proposes a new estimating method which, for the first time. introduces reliability analysis into the life estimation of railway rails.
结论有助于钢筋混凝土结构的疲劳设计，可靠性分析和寿命估算等。
This research contributes to fatigue design, probability analysis and life estimations for steel reinforcement concrete structure.
薄壁结构的动力特性及动态响应分析是声疲劳分析以及寿命估算的基础。
Analysis of structural dynamic performance and response is the foundation to estimate fatigue life.
编制出驱动轮轴扭转与弯曲载荷谱，并对驱动轮轴的随机疲劳寿命进行了估算。
Torsional and bending load spectra of drive shaft are worked out and fatigue life of the shaft estimated.
该文对大型风力机玻璃钢叶片疲劳寿命的工程估算方法进行了研究。
The engineering estimation method of the fatigue life of largescale wind turbine GRP blade were presented.
研究了大型风力机玻璃钢叶片载荷谱和疲劳寿命的工程估算方法。
This paper presents the load spectrum and an engineering estimating method of the fatigue life of GRP blade of large-scale wind turbine.
编制载荷谱、估算裂纹处的疲劳寿命。
Based on these the fatigue life of the crack region were estimated.
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。
Moreover, this paper lists both static and strain fatigue parameters of this material for material design, selecting and life prediction.
对海洋平台用高强度钢焊接接头多次补焊的疲劳性能进行试验研究，给出采用威布尔分布下的寿命估算式及R—S—N曲线。
Based on an experimental study of multiple repairing welded joints on high strength offshore structure steel, the R-S-N curves and life estimation equations under Weibull distribution are presented.
应用局部应力应变法估算构件疲劳寿命时，通常要采用循环计数法。
Counting the number of cycles is the common method of estimating the life of fatigue of a component.
掌握机械结构的破坏规律、估算其疲劳寿命，在工程领域内有着十分重要的意义。
Grasp the mechanism the destruction rules, and estimate its fatigue life, it has the very vital significance in the field of engineering.
并采用应力严重系数法估算了其疲劳寿命。
The stress severity factor method is used to calculate the fatigue life of the structure.
载荷谱是起重机分级、结构疲劳强度试验研究和寿命估算的重要依据。
Load spectra are important basis on which the classification of cranes, the experimental study of fatigue limit of the crane framework, and the evaluation of its life limit are based.
最后给出了根据钢的拉伸性能估算疲劳裂纹起始寿命的实例。
Finally, examples are given for predicting the fatigue crack initiation life from the tensile properties of steels.
并根据其疲劳类型，确定选用安全寿命设计方法对塔式起重机钢结构进行疲劳分析，并应用名义应力法估算塔式起重机钢结构的疲劳寿命。
According to the fatigue type, use safe-life design method to study tower crane's fatigue, and choose nominal stress approach to estimate the life of tower crane.
本文讨论在复杂载荷下疲劳（裂纹形成）寿命的估算方法。
Fatigue (information) life predictions under complex loading are discussed in this paper.
本文在大量实验的基础上提出了对焊接节点采用断裂力学的方法和对螺栓球节点应用累积损伤理论估算它们疲劳寿命的计算方法。
Finally, the methods for calculating fatigue life based on fracture mechanics for welded node and cumulative damage theory for bolted sphere node respectively have been presented.
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