A sort of efficient calculation method was developed for fatigue life prediction under random loading.
研究了一种用于随机载荷下试件疲劳寿命预估的有效计算方法。
The test result has proved that the analysis accuracy is very high for normalizing 35 steel under random loading.
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 fatigue life of a notched specimen under random loading spectrum is evaluated by means of the present method.
用该方法分析了一个缺口试件在随机谱载下的裂纹形成寿命，结果比常规的有效系数和雨流法更接近试验结果。
So far, theoretical or experimental studies of random loading identification have rarely been seen in the literature.
随机荷载识别的理论和实验研究都还十分稀少。
The relationship between loading and strength is established through the statistic characteristics of random loading.
通过随机载荷的统计特性建立强度与随机载荷的关系。
The semi-analytical solution for evaluating ESR from spectral density function of wide-band random loading is presented.
提出了依据宽带随机谱功率密度函数求解等效应力幅的半解析公式。
By analyzing the statistical properties of random loading, the reliability models of components and systems were developed.
通过分析随机载荷的统计特征，得到机械零件及系统的可靠度模型。
A calculation method used for fatigue life prediction of components under narrow band random loading is discussed in detail.
文中详细论述了机械构件在窄带随机应力作用下疲劳寿命预测的计算方法。
Probability density evolution method for the analysis of linear stochastic structural static response under random loading is proposed.
提出了随机荷载作用下随机结构线性静力反应的概率密度演化方法。
The moment equations clearly reflect the relation between two different kinds of statistical properties of the random loading and structure response respectively.
矩量方程清楚地反映出分别对应随机载荷和结构响应的两种不同统计特性的相互关系。
Study of fatigue crack growth rate and fatigue life calculation under random loading is very important for the reliable life prediction of engineering structures.
变化载荷作用下裂纹扩展律和疲劳寿命的计算对工程结构的寿命的可靠预测是十分重要的。
A new type of random program constant amplitude load spectrum is introduced, which is used in laboratory simulation test and life prediction of tractor components under random loading.
本文介绍了一种新型的随机程序载荷谱，以用于拖拉机零部件在随机载荷作用下的室内模拟试验与寿命预测。
Many engineering structures are subjected to random loading in service. The load cycle interactions can have a very significant effect in fatigue crack growth under variable amplitude loading.
许多工程结构在服役过程中受到随机载荷的作用，载荷循环之间的相互作用对裂纹扩展将产生明显的影响。
Sonic loading is a high frequency, broadband random process. Basic cycle counting methods, which are prevalently used in time domain, are difficult to be applied.
噪声载荷是一种高频、宽带随机载荷，在低循环疲劳寿命预测中被广泛采用的时域计数法很难直接利用。
The wind loading of a tracking radar antenna, for example, results from a mean velocity component that varies with time plus superimposed random gusts.
例如跟踪雷达天线的风力负载是由一个随时间变化的平均速度成分与迭加的随机阵风组成的。
And it has a high precision, strong restraining random interfering noise. As a result, it makes loading-spectrum analysis more accurate.
而且该算法精确度高，抗随机噪声干扰能力强，使得载荷谱分析更加准确。
The man was loading fecal in the sun Walking out of the hall, I visited Sheqi county at random.
《烈日下的拉粪人》走出会馆，随意地游走在社旗县城时所摄。
The nonlinear dynamic response of an articulated loading tower under the action of random sea waves is carried out by means of nonlinear spectral analysis.
本文应用非线性谱分析法，对铰接装油塔在随机海浪作用下的非线性动力响应进行了分析。
Secondly, by introducing the random variable that is statistical ambiguity, the statistics of loading and resistance of existing structure are researched.
利用统计不定性随机变量，结合现有结构的特点，提出荷载、抗力变异性的小样本统计推断方法；
The large-amplitude rolling random differential equation has been founded of floating structure subjected to wind-wave and explosive loading.
建立了大型浮体结构考虑风浪和爆炸载荷作用的大幅横摇运动随机微分方程；
The probability density function of partial strain loading of product is defined in accordance with the relevant theory of random vibration test.
根据随机振动试验的有关理论，确定产品局部应变载荷的概率密度函数。
This paper deals with dynamic response of tall buildings due to the action of random wind loading.
本文研究高层建筑在随机风荷作用下的动力响应。
The iterative formulas of elastoplastic stochastic finite element method (SFEM) under cyclic loading are deduced and the random responses of local multiaxial stress and strain are calculated.
推导了交变载荷下弹塑性随机有限元的迭代格式，计算了局部多轴应力应变的随机响应。
A random process probabilistic model of the loading maximum value distribution is determined based on the data of actual measurment and investigated operation situation for gantry crane on wharf.
本文以现场量测的码头门机荷载及运行情况调查资料为依据，确定了该荷载最大值分布的随机过程模型，并对该荷载进行概率统计分析。
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.
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 analytic model of random cyclic strength-dynamic interference reliability of loading was established.
建立了随机循环强度-载荷动态干涉可靠性分析模型。
A frequency domain method for predicting the fatigue life of notched specimens under random vibration loading is presented.
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.
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。
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