查询词典 fatigue

By means of self-designed test method ,thermal-fatigue resistance and influence factor for surfacing metal of three self-produced flux-cored wires and one solid wire for roller hardfacing were studied deeply.The mechanisms of thermal-fatigue crack initiation and extension were investigated .

通过设计的热疲劳试验方法，对三种自制药芯焊丝和一种国产堆焊轧辊用实心焊丝的耐热疲劳性能及其影响因素进行了深入研究，同时对堆焊金属中热疲劳裂纹形成以及扩展机理做了进一步探讨。

The fatigue analysis also was carried out with FE-SAFEWORKS then the fatigue life was predicted. A new way of design of coupling shaft is proposed.

基于此，应用有限元方法分析了转接轴静强度，并用FE-SAFEWORKS模块对转接轴进行疲劳分析，计算其寿命，从而为转接轴的设计提供一种新的思路。

According to the analysis of some theoretical models for predicting fatigue threshold of a cracked body, it is held that the tensile properties of structural steels and the stress ratio under recycle loading are main dominant factors of the fatigue threshold .

通过对各种疲劳门槛值的理论模型的分析，认为结构钢的拉伸性能指标和循环加载条件是裂纹体疲劳门槛值的决定因素。

In practical application item, UIC515 Code is firstly applied for analyzing the complete welded frame by finite element method to get the area with bigger nominal stress and lower fatigue behavior, and then study the hot spot stress fatigue strength evaluation approach of the typical fillet ring joint at the connection of tubular transom and side frame, the plate to plate end weld between side frame web plate and anti-yaw damper hold and the non-close ring end weld at the connection of braking unit hold and tubular transom.

在热点应力疲劳评估时，首先对焊接构架中的环向角焊缝、板间端焊缝以及非闭合环向端焊缝进行简化，得出了相应的几何应力集中系数和热点应力疲劳极限，为热点应力疲劳评估提供了依据。

Chapter 5 of the strain fatigue theory is discussed, given a simple example of the strain fatigue analysis.

第5章对应变疲劳理论进行了论述，给出了简单的应变疲劳分析实例。

The results show that the life of low cycle large strain fatigue N of nitinol is between 102 -104 cycles; The less the cycle strain, sheet thickness, wire diameter and range of strain angle are, the more the life of fatigue is. Heat treatment of nitinol pl...

结果表明：TiNi合金低周大变形疲劳寿命在102-104之间；板厚、丝径、形变角幅度愈小，寿命愈长；热处理制度对疲劳寿命有重大影响，采用热拉伸工艺和400-500℃回火，合金有较好综合性能；合金中杂质含量和成分组织均匀性对合金性能有着重要作用。

Based on the critical approach, a model for multiaxial fatigue life prediction was established by combining maximum shear strain and normal strain on the critical plane, and the effect of stress state under the multiaxial cyclic loading condition on the fatigue life was taken into account.

通过对薄壁圆管和缺口试样的高温多轴疲劳寿命特性分析，基于临界面方法提出了一个的多轴疲劳寿命预测模型，在考虑临界面上最大剪应变和正应变对多轴疲劳损伤贡献的同时，还引入了应力状态对多轴疲劳寿命的影响因素。

Loading of peak generator units were changed frequently. The fastening bolts of steam turbine cylinder case were in fatigue-creep interaction. It was important to study fatigue-creep interaction damage of fastening bolts under multiaxial stress.

调峰机组频繁调整负荷，汽轮机汽缸紧固螺栓处于疲劳-蠕变交互作用，对紧固螺栓多轴应力下疲劳-蠕变损伤的研究对调峰机组安全运行和维修具有重要意义。

Spring fatigue strength is a key performance index. Fatigue strength is less than static stress strength such as elasticity limit,yield strength.

弹簧由于承受交变应力的作用，在运行过程中发生的弹簧断裂主要是疲劳断裂，所以，弹簧的疲劳强度是关键的性能指标。

From all the work a set of complete methods of analyzing and calculating fatigue reliability of structure systems are put forward. The fatigue reliability of structure systems can be calculated by searching failure modes and using the series-wound model composed of the failure modes.

由此针对结构系统疲劳破坏的特点，本文提出了一套完整的结构系统疲劳可靠性的分析和计算方法，该方法通过搜索结构系统的主要失效模式，应用失效模式组成的串联模型计算结构系统的疲劳可靠性。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

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起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。