查询词典 fatigue curve

The calculated curve of fatigue crack growth rate is in agreement with the general propagation pattern and the predicted threshold accords with the experiment threshold well.

由此计算的疲劳裂纹扩展速率符合通常的模式，预测的门槛值与实验拟合较好。

Nineteen sets of experimental data of metals and composites were employed to verify the model, and the results show that the model is capable to describe the fatigue life curve of materials in whole region.

对金属材料和复合材料的19条应力/应变－寿命曲线进行了统计分析，结果表明该模型可以描述材料的全寿命曲线。

Nineteen acts of experimental data of metals and composites were employed to verify the model, and the results show that the model is capable to describe the fatigue life curve of materials in whole region.

对金属材料和复合材料的19条应力／应变－寿命曲线进行了统计分析，结果表明该模型可以描述材料的全寿命曲线。

Offshore steel platform; reliability; fatigue test; crack growth curve

海洋平台钢；可靠性；疲劳试验；裂纹扩展曲线

Finally, the service life of the valve was estimated based on the fatigue life curve and an improvement of the valve structure was also presented, it could effectively alleviate the stress concentration and prolong the service life.

依据泵阀疲劳寿命曲线，对泵阀使用寿命进行估算，并提出一种泵阀结构改进的新方案，在一定程度上有效减缓了应力集中，对延长泵阀使用寿命具有重要的实用价值。

The fatigue limit of the S-N curve is found to be about 30% of the ultimate static failure stress, which validates the value suggested by the UK guidance.

其疲劳极限值约为静载作用下极限界面主应力的30%，与英国规程中的规定相符。

Orthogonal polynomial and three parameter exponent function model to treat fatigue crack growth curve.

疲劳裂纹扩展曲线的正交多项式与三参数指数函数拟合法。

Based on the experimental results and adopting the most common used method, the coefficient of cyclic properties and curve of fatigue life versus strain of LCF of 3OCr2MoV were drawn. Comparisons between experimental results and similar curves were made.

采用最通用的疲劳估算方法拟合出了30Cr2MoV转子钢的常温和高温550℃下的低周疲劳参数和循环应力-应变曲线以及低周疲劳寿命曲线，并将试验结果与同类曲线进行了比较。3。

Finally, based on the dynamic load chart received by kinetics study on gear transmission system of turbine starter, has a statistic on dynamic load, receives the load spectrum by the method of counting range, then selects S-N curve method and Manson-coffin formula respectively for the fatigue damage calculation and life prediction of the tooth circle.

最后，在对涡轮起动机齿轮传动系统进行动力学分析获得的动载荷历程的基础上，对动载荷进行统计分析，采用幅值计数法获得载荷谱；分别采用S-N曲线法和Manson-Coffin法对涡轮起动机齿圈疲劳寿命进行了预估。

On the basis of a reliable finite element model, the load spectrum as specified in AAR standard and the S-N Curve database for welding joints, regarding the new type of heavy haul open top wagon as the analysis object, fatigue life prediction is cond

基于可靠的有限元数值仿真模型，以及美国AAR标准中的载荷谱、焊接接头的S-N曲线数据库，以重载新型敞车为应用对象，在设计阶段对其进行了疲劳寿命预测，预测结果表明该车确实存在疲劳寿命薄弱部位。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。