查询词典 fatigue strength

Comparting fatigue tests on TR upsetting and open die forging,this paper finds that the fatigue strength of the TR upsetting crankshaft is 16 — 22 percent higher than that of the open die forging crankshaft.

本文介绍了先进的TR镦锻法制造曲轴毛坯的工作原理。

The results show that the fatigue life of the peened joint is 20～30 times as long as the as-welded joints .Therefore,the improvement of the fatigue strength of welded joints by ultrasonic peening is remarkable.

试验结果表明：超声冲击方法对焊接接头疲劳强度的改善效果十分明显，能够提高疲劳寿命20～30倍以上，极具实用价值。

The characteristics of fatigue cracking, in rib to crossbeam joints, rib to deck plate joints and rib to rib joints, are understood by the analysis of the test results. The regression line and 95% confidence lower limit of △σ-N curves are given for these joints. Their available fatigue strength is suggested for fatigue design.

通过对试验结果的分析，了解了纵肋与横梁连接、纵肋与盖板连接和纵肋与纵肋连接的疲劳开裂特点，给出了这些连接细节△σ—N曲线的回归线和95%置信下限，提出了疲劳设计时可采用的疲劳强度。

The damage analysis of cracked turbine disk in the rocket engine is described. From a series of analyses, the causes of failure were reasoned through calculation and experiments, fatigue analyses which include stimulating vibration test and fatigue strength calculation were emphasized.

针对某火箭发动机涡轮盘在热试车中出现的裂纹故障，进行全面的分析，准确定位故障类型，以试验和计算分析给出合理的故障原因，重点是在疲劳分析方面所做的工作，包括振动模拟试验、疲劳强度计算，并根据疲劳强度分析结果提出改进方案。

In engineering application, especially in the design stage, it is always using the material fatigue property curve and fatigue strength factors, ie.

在工程应用中，特别是在产品设计阶段，通常利用材料的疲劳性能曲线，再考虑零部件的尺寸系数、表面加工系数及应力集中系数等疲劳强度影响因素进行构件疲劳强度设计。

Finally, the fatigue strength or fatigue life of the frame is forecasted on the basis of the S-N fatigue life curve. A calculation example shows the validity of this method.

算例表明，采用该预测方法计算的高速列车转向架构架的疲劳强度与现有文献的结果一致。

According to the test data, the fatigue strength time-varying model with the deterioration of fatigue strength coefficient in S-N curve was put forward.

根据试验数据，提出S-N曲线中疲劳强度系数下降的疲劳强度时变模型。

Gear ; roller ; contact fatigue ; fatigue strength ; ratios

齿轮；滚子；接触疲劳；疲劳强度；比值

And then it uses stress amplitude method to check fatigue strength and estimates fatigue life of the main girders.

在此基础上，应用应力幅法对主梁进行了疲劳强度的计算和疲劳寿命的估算。

And then it uses stress amplitude method to check fatigue strength and estimates fatigue life of the main girders.

应用应力幅法对主梁进行了疲劳强度的计算和疲劳寿命的估算。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了