stress fatigue的例句大全

Method Study on Thermal Stress Fatigue Test of Centrifugal Mold Materials for Iron Pipes

离心铸管金属型材料抗热应力疲劳性能测试方法的研究

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Lifespan of catalysts; In fact, low stress fatigue destruction may also occur.

实践证明活塞杆也可以发生低应力短寿命的疲劳破坏。

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Steel-Torsional stress fatigue testing?

钢 - -扭应力疲劳试验?

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The experiment and numerical analysis of biaxial thermal stress fatigue under various stress ratio.

研究了不同应力比的二线热应力疲劳试验并进行了数值分析。

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Study on the Thermal Stress Fatigue of Hot-Work Die Steels With Square Specimen

用方形试样研究热作模具钢的热应力疲劳

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The bushes and bearing pins of the rubber O ring roller chains were characterized by stress fatigue wear and adhesion wear;

O形圈链条中销轴和套筒的磨损主要以疲劳磨损为主，并伴随着粘着磨损；

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Biaxial Thermal Stress Fatigue and Crack Morphology

二维热应力疲劳及裂纹形态

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Based on the parameters of mechanical behavior under tensile and creep tests, the model of constitutive equation of stress-strain under the thermo-mechanical fatigue has been established.

基于简单试验条件下测得的单调拉伸性能参数，同时考虑应变、温度和应力对热机械疲劳应力应变关系的影响因素，建立了热机械疲劳应力应变本构关系模型。

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Once compressive residual stress is induced in the notched area, the residual stress concentration factor can be higher than the theoretical stress concentration, therefore the notched fatigue limit can be higher than the highest smooth fatigue limit.

缺口试件引入残余压应力，由于应力集中效应，缺口根部的残余应力集中系数可能高于理论应力集中系数，因而其疲劳强度将超过最高的光滑试件疲劳强度。

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The grouping test is conducted in higher stress region in order to gain the fatigue life, S-N curve and the inferior limit of fatigue life. The confidence level of grouping test is90%.

进行成组法试验获得较高应力下的疲劳寿命、S-N曲线及疲劳寿命下极限，试验置信度为90%。

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Fatigue Test Method of Conductor under Compound Alternating Stress

复合交变应力条件下的导线疲劳试验方法

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In allusion to the new structures emerging in the integral joints, their fatigue performance was gained firstly through the fatigue test, and through a new perspective point of view, the thickness coefficient of box element and secondary stress to research the fatigue problem.

针对整体节点部位出现的新构造，通过疲劳实验首次获得其疲劳性能，并从箱形杆件板厚系数和次应力这些新角度来进行疲劳问题的研究。

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According to the fatigue environment in the ice zone and the ice-force spectrum function, this paper establishes the approximate explicit formula of nodes stress with respect to the ice velocity and thickness.

本文结合现有的冰疲劳环境荷载及冰力谱函数，提出了相对于冰速、冰厚随机冰载的管节点应力幅显式近似计算公式；

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By optimizing the radius of rounded corner at the root of thread and the structure of screw nut, and by changing the diameter of the root of thread, the concentrated stress was reduced, and stress distribution was improved for higher fatigue strength of the screw bolt.

通过优化螺栓螺纹根部圆角半径和螺母结构、改变螺纹根部直径的方法，缓解螺纹根部的应力集中，改善应力分布，实现提高螺栓疲劳强度的目的。

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The low-cycle fatigue procedure of steel 20 was investigate in 300 MPa static tension stress.

研究了20钢在300MPa静拉应力作用下的低周疲劳过程。

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Effect of Scatter of Pre-tension Stress on Fatigue Life of Bolt

预紧力的分散性对螺栓疲劳寿命的影响

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Fatigue notch factor and theoretical stress concentration factor is used to modify the mean and standard error of fatigue strength respectively.

在综合考虑疲劳缺口系数和理论应力集中系数的影响下，对疲劳强度指数的均值和标准差分别进行修正，获得适用于高周构件的寿命预测公式。

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Stress Concentration Problems on Fatigue Strength Calculation of Shafts Having Keyways or Tight Fit Joints

键槽轴段与紧配合轴段疲劳强度计算的应力集中问题

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This paper gives a correct explanation of stress concentration on fatigue strength calculation of shafts having keyways or tight fit joiuts.

本文阐明了轴的疲劳强度计算时，在键槽和紧配合应力集中问题上所应有的认识。

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The behaviour of fatigue crack growth rate da/ dN and threshold of stress strength factor △ K_ ( th) in axle steel is investigated and calculated.

本文对车轴钢材料的疲劳裂纹扩展速率da/dN和应力强度因子门槛值△K（th）的特性进行了试验和计算。

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