疲劳

We study the profile alloy fatigue endurance limit for product design fatigue performance indicators.

研究铝合金型材的疲劳持久极限，为产品设计提供疲劳性能指标。

In order to evaluate the properties of deep carburized materials correctly and to provide the basis of the selection and heat treatment. The urgent work is to investigate the method of contact fatigue test.

为了能对深层渗碳齿轮材料的接触疲劳性能进行正确的评价，为选材和制定热处理工艺提供依据，进行深层渗碳材料的接触疲劳试验方法的探讨是一个急待开展的工作。

By mechanical analyzing the shaft of supporting wheel, the relation between the axis line and fatigue fate of support system is derived.

本文通过对回转窑托轮轴进行力学分析，导出支承系统各托轮轴疲劳损伤与轴线偏差的关系，从而根据轴线检测得出各托轮轴剩余疲劳寿命；以轴线偏差调整量为优化变量，各托轮轴中最小的剩余寿命最大为目标函数建立优化模型，结合现场实例进行支承系统等寿命优化调整研究。

Based on the experiment and theory analysis, we give out the fatigue reliability curve of these two kinds of materials to provide bases for engineering.

通过上述试验研究与理论分析，给出 WH530和WH610D2两种钢材的疲劳性能参数，并给出这两种钢材的疲劳可靠性曲线，为工程应用提供依据。

Based on the fatigue curve, the life distribution of structures and the reliability of the expected life can be obtained considering the randomness of the stress range.

基于疲劳曲线，考虑应力范围的随机性，获得了结构疲劳寿命所服从的分布，计算出期望寿命的可靠度。

The characteristics of fatigue life curve of materials in three stages of fatigue life were analyzed and then a model with three parameters was presented to describe the fatigue life curve of materials in the whole region.

分析了材料疲劳寿命曲线在三个阶段内的变化特性，提出了一个描述材料全寿命区域内疲劳寿命曲线的三参数模型。

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。

reference literatures were reviewed,the mechanism,method and curative effect of acupuncture therapy for exercise-induced fatigue was induced.concluded that the related research have no unified law and standard,were unsystematic,and so on.how to form a unified rule based on chinese medicine theory and combined with clinical practice,is the major task of acupuncture therapy for exercise-induced fatigue,even other sport disease.

通过查阅近年来文献，归纳针灸疗法治疗运动性疲劳的机理、方法和疗效及存在的问题。结果发现相关研究存在无统一法则，无统一标准，不系统等问题。如何以中医理论为指导，结合临床实践形成统一的治法治则，是针灸治疗运动性疲劳乃至其他运动性疾病都必须首先解决的问题。

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。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。