疲劳寿命

本文建立了复合材料疲劳寿命曲线的有效缺陷模型，阐明了模型中两个参数的物理意义。

The effective flaw model is developed to describe the S-N curves of composite materials . The two fitted parameters in the model have certain physical meaning .

传动V带强化疲劳寿命试验的探讨

An Investigation in the Fatigue Life Test of V-Belts

碳纤维薄板增强RC梁的抗弯疲劳寿命

Fatigue Lives of RC Beams Strengthened with Carbon Fiber Laminate on Bending Loads

PCB镀通孔疲劳寿命对设计参数的灵敏度分析

Sensitivity Analysis for the Dependence of PTH Fatigue Life on PCB Design Parameters

Al-Si系铸造合金微观结构对疲劳寿命影响的研究进展

Effect of microstructure on Al-Si Casting Alloy in fatigue lifetime progress

V带疲劳寿命P-S-N曲线研究

P - S - N Curve Research for V Belt

相对Miner法则和局部应力应变法结合预测复杂载荷下构件的疲劳寿命

Fatigue life prediction under complex load using local strain approach and relative miner 's rule

工业设计软件讲座第二讲CAE在冰箱助吸器疲劳寿命设计中的应用（一）

Application of CAE in Failure Life Design of the Part Aided to Tighten Refrigerator 's Door ( 1 )

双参数Weibull分布函数用作国产轮盘材料疲劳寿命分布模型时必须进行假设检验。

The two-parameter Weibull distribution used to be fatigue life distribution for domestic disc materials is preceded by hypothesis test .

本文采用MonteCarlo方法确定机械零件在分布应力下疲劳寿命的分布参数估计值。

The estimate value of the distributed parameter of the fatigue life-span is determined by using Monte Carlo method for the machine parts under distributed load .

研究表明：混合料饱和度和空隙率对K值，即沥青混合料疲劳寿命有较大影响；

The results show that percent air voids and percent of voids filled with asphalt in asphalt mixtures have great influence affect K value which indicates the extension of fatigue life .

PBGA焊点形态参数对热疲劳寿命的影响

The Effects of PBGA Solder Evolving Parameters on Thermal Fatigue Life

实验结果表明，在实验所涉及的频率范围内，交变应力的频率对聚合物ABS的有限疲劳寿命的疲劳强度没有影响。

It is show by experimental results that the fatigue Strength of finite life of polymer ABS is not affected by the frequency of the cyclic loading .

运用ADAMS对整套传动系统进行运动仿真，得到各轴的转速信息和载荷谱，为有限元分析和疲劳寿命分析打下基础。

The use of ADAMS on the entire drive system simulation , get the shaft speed information and load spectrum , a finite element analysis and fatigue life analysis basis .

考虑低周疲劳寿命的改进Park-Ang地震损伤模型

A modified Park-Ang seismic damage model considering low-cycle fatigue life

为研究载荷谱、恒幅应力水平及裂纹尺寸对疲劳寿命预腐蚀影响系数C（T）的影响，建立了基于疲劳寿命服从威布尔分布的C（T）对比法。

To analyze the influence of the different spectra loading , constant amplitude loading and crack size on the pre-corrosion influence factor ( C ( T )), the C ( T ) test assuming the fatigue life following the two-parameter Weibull distribution was proposed .

利用实验数据样本完成了网络的训练，并对模拟样本进行了疲劳寿命的估算，验证了BP网络用于混凝土疲劳寿命估计的可行性和可靠性。

The training of the network is done for experimental data , and the estimation of fatigue life of simulated specimens is proceeded to examine the validity and reliability of the BP network for estimating the fatigue life of concrete .

40T钢脱碳倾向小，有利于提高弹簧的疲劳寿命。

The smaller decarburization trend of steel 40T is favourable to increase the fatigue life of spring .

利用模态结果文件和DAC文件对车身进行了疲劳寿命分析。

In MSC . Fatigue , the fatigue life analysis of the body is executed using the results file of the model analysis and the DAC mode file .

上钢五厂与SKF公司生产轴承钢的冶金质量和接触疲劳寿命的试验研究

Metallurgical quality and contact fatigue life of bearing steels made by Shanghai No. 5 steel works and SKF company

HPSN陶瓷球混合轴承疲劳寿命的探讨

Research of the fatigue life for hybrid bearing HPSN

环境对涡轮盘材料GH33A低周疲劳寿命的影响

Effect of Enviroment on the Low Cycle Fatigue Life of Turbine Disk Material

疲劳寿命试验及计算实例表明，与采用常规的确定性Miner法则计算结果相比，按照该文方法计算得出的疲劳寿命更接近于疲劳寿命试验结果。

The fatigue life experiments and practical calculation example show that the calculated result of the fatigue life using the new calculation method is more close to the experimental result than that by means of ordinary certainty Miner rule .

当拉应力较大时，微动疲劳寿命（FFL）与普通疲劳寿命（PFL）相差不大，法向压力的影响不明显；

The difference between the PFL and FFL is not obvious for large tensile stresses and so does the effect of the contact pressure on the FFL .

该方法考虑了不同应力水平下对数疲劳寿命方差不等的事实，给出了统计意义下P-S-N曲线的最佳估计。

This method considers the fact that that the variances of fatigue life logarithms are different at different stress levels , and provides the best linear unbiased estimators for the P-S-N curvers .

为确定混凝土桥梁在重载列车作用下的剩余疲劳寿命，本文用模糊数学方法推断出最大车辆轴重达25t的典型列车，并为其典型性提出了判据。

This paper suggests a fuzzy deduction for distinguishing the typical train with 25t axle-weight in judging the fatigue of railway concrete bridge and proposes the criteria for the typicality of the typical train .

另外，采用修正Miner法则和断裂力学方法对40Cr高强螺栓的疲劳寿命进行估算，同时引热点应力法对40Cr高强螺栓螺纹根部进行应力分析。

By means of hot-spot method we analyze the root of screw of high-strength bolt . Besides , on the basis of analysis above , amendment Miner ruler and mechanics of fracture respectively are adopted to study its fatigue life estimation .

在Hull-Rimmer理论的基础上，建立适用于不同预应变强化量条件下的奥氏体不锈钢高温疲劳寿命预测方程，预测结果与试验结果吻合较好。

Based on the Hull-Rimmer theory , a life prediction equation applicable to different pre-strain in high temperature was developed , and the predicted lives coincided well with the test results .

利用自动沥青路面分析仪测量模拟结构的疲劳寿命，验证了冲击韧性与沥青混合料抵抗反射裂缝能力的相关性，并建立了ATB等六种混合料级配的冲击韧性与疲劳寿命的数学关系。

To validate the relationship between impact toughness and the anti-reflective cracking ability of the asphalt mixture , by using the APA ( asphalt pavement analyzer ) which is used to simulate the fatigue life of the structure , and establish a mathematical relationship for six kinds of asphalt treated .

估算承受随机载荷构件疲劳寿命的一种新方法

A method to predict fatigue life of components under random loading