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.
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.
在多次试验和分析的基础上，研制了一种可用于现场测试的工程结构材料疲劳载荷谱实时测定系统。
Based on the many times tests and analyses, a real time system about spot testing fatigue load spectrum of engineering structure materials was studied and developed.
要进行飞机典型构件的腐蚀疲劳试验和分析，就必须编制飞机载荷-环境谱。
To do Corrosion Fatigue tests and analyses of typical Components of aircraft, the Compilation of aircraft.
应用随机循环应变载荷-强度干涉模型，建立了基于应变的疲劳可靠性分析新方法。
A new method for strain-based fatigue reliability analysis is constructed by considering interference between the random fatigue strain applied and capacity histories.
计算结果表明，非线性波浪载荷对船体结构疲劳损伤分析具有重要影响。
Calculation results show that nonlinear factors are important for fatigue strength analysis of ship structures.
最终得到的承力机匣疲劳载荷谱为后续的强度与疲劳寿命分析及其试验谱的确定提供了依据。
The entire fatigue load spectra of supporting-case provide the bases for the establishment of intensity, fatigue life analysis and experiment spectra.
由于构件的材料参数、几何参数及所受的载荷等均为随机变量，所以构件振动时的疲劳强度应通过随机参数来进行分析。
Material characteristics, geometrical properties of structural components and loads are variables. As a result, the fatigue strength is analyzed by means of random variables.
在分析影响起重机金属结构疲劳载荷情况的基础上，给出了起重机主梁起吊过程中不同阶段的动力学模型。
The paper builds the models at different stages of lifting operation on the basis of analysis of loads influencing crane structure fatigue.
分析了疲劳试验系统中存在的普遍问题，即试验载荷的峰值和均值随着试验时间和试件的机械性能变化而发生漂移。
The general problem in the fatigue test system that the amplitude and mean of load signal will be changed with test time and change of mechanical characters of specimens is analyzed.
介绍了疲劳累积损伤模型，并对不同载荷谱作用下的结构疲劳寿命预测公式进行了理论推导，为后面的计算分析奠定了理论基础。
A cumulation damnification model is introduced. The formulae of structure fatigue lives prediction are deduced to form the basis of the following calculation and analysis.
噪声载荷作用下薄壁壳体的振动应力响应分析是声疲劳研究的重要任务之一。
Random vibration response analysis of thin-shells excited by acoustic loads is one of the important tasks of sonic fatigue investigation.
本文分析了静载荷及循环载荷下的微塑性变形行为，认为振动时效动应力的选择应以材料的疲劳极限作为依据。
Analyzing the micro plastic deformation of metal material under static load and cyclic stress, the scientific basis for choice dynamical stress of VSR is provide.
校核了主轴在循环载荷下的疲劳强度，为主轴的失效分析和优化设计提供了可靠的理论依据。
After checking the spindle's fatigue strength which suffered from a circulating load, it can provide reliable theoretical basis for failure analyzing and optimization designing of the spindle.
给出了在随机波浪载荷和冰载荷作用下平台构件疲劳损伤的一种计算方法，并利用该方法分析了平台单个构件和平台整体的疲劳可靠性。
A simplified method for calculating the fatigue damage of components under random wave and ice load was presented. This method was used to analyze the reliability of components and integral platform.
经正火35钢随机载荷疲劳试验验证，其可靠性分析精度较高。
The test result has proved that the analysis accuracy is very high for normalizing 35 steel under random loading.
考虑零构件的随机因素，将随机有限元方法引入到交变载荷下弹塑性有限元的迭代格式中，得到局部应力应变的随机响应，为低周疲劳可靠性分析提供了更精确的依据。
The component randomness is considered. The SFEM is introduced in the iterative formulas of EFEM under cyclic loading to obtain the random response of local stress and strain.
最后分析在恒幅疲劳载荷作用下，不同的最大凹陷深度和凹陷影响区域的长度对楔形凹陷立管的疲劳寿命的影响。
Finally, the effect of different maximum depth and length of the dent on the fatigue life of dented riser under the constant amplitude fatigue loads was studied.
讨论了恒幅及变幅载荷作用下，拉剪点焊接头的疲劳性能，并应用断裂力学对实验结果进行了分析和整理。
This paper discussed the fatigue strength of single-spot-welded joints under constant and variable amplitude loading. The fracture mechanics was also used to analyse the experimental results.
具体分析了结构系统在静载和疲劳载荷作用下的失效机理以及各失效模式之间的相关性，给出了在静载和疲劳载荷作用下结构系统的可靠性分析方法。
The paper discusses the failure mechanism of structural system subjected to dead and fatigue load and gives the method of reliability analysis considering static strength and fatigue.
具体分析了结构系统在静载和疲劳载荷作用下的失效机理以及各失效模式之间的相关性，给出了在静载和疲劳载荷作用下结构系统的可靠性分析方法。
The paper discusses the failure mechanism of structural system subjected to dead and fatigue load and gives the method of reliability analysis considering static strength and fatigue.
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