Fatigue crack propagation behaviour under variable amplitude loading is significantly influenced by load history induced sequence effects.
导致加载序列作用的加载历史极大地影响着变幅加载下的疲劳裂纹扩展行为。
According to the requirement of the total diving number and the assumption of the distribution type, the fatigue load spectrum for the 7000m deep manned submersible is given.
根据设计任务书中规定的总的下潜次数要求，最后给出了我国目前正在研制的7000米载人潜水器耐压球壳的疲劳载荷谱。
It should be noted that the values provided in the product tables for load and speed ratings as well as for the fatigue load limit are heavily rounded.
注意，产品列表中所提供关于负载、速度级别及疲劳负荷限值数字均已四舍五入。
The application results show that laser welding can meet higher strength stress demands for those fatigue load parts, such as intake and exhaust valves, timing gear, suspension equipment.
应用结果表明：对于进排气门、正时齿轮和悬架装置等承担疲劳载荷的零部件，激光焊接可满足其较高的强度要求；
Based on the many times tests and analyses, a real time system about spot testing fatigue load spectrum of engineering structure materials was studied and developed.
在多次试验和分析的基础上，研制了一种可用于现场测试的工程结构材料疲劳载荷谱实时测定系统。
The shortness of creep loading time and the faster frequency of fatigue load change induce general elastic strain stage to end and delayed elastic strain platform stage to begin under shorter strain.
因蠕变加载作用时间缩短和疲劳载荷变化更频繁，导致在较小的应变下结束普弹应变阶段并进入延迟弹性变形的平台应变阶段。
In the course of constructing fatigue load spectrum, how to omit the small loads not to make damage is a problem paid attention to all the time.
在疲劳载荷谱编制过程中，如何舍掉无损伤效应小载荷一直是一个令人注目的问题。
The accuracy of fatigue test results depends on the authenticity of the load spectrum.
疲劳试验结果的准确性取决于载荷谱的真实性。
There are two kinds of load controlling mode for asphalt mixtures fatigue testing:stress controlling mode and strain controlling mode.
沥青混合料疲劳试验的荷载控制模式有应力控制模式和应变控制模式。
A blade should be calibrated before load measurement and fatigue test.
在桨叶的载荷测量和疲劳试验之前，都要对桨叶进行载荷标定。
Results When continual stress got together to act on tibia bone which exceed its physiological load tibia bone will fatigue, then fatigued fracture will take place.
结果持续高强度应力积累作用于胫骨超过生理载荷能力时，即会出现胫骨疲劳，继而发生胫骨疲劳骨折。
Torsional and bending load spectra of drive shaft are worked out and fatigue life of the shaft estimated.
编制出驱动轮轴扭转与弯曲载荷谱，并对驱动轮轴的随机疲劳寿命进行了估算。
This paper provided the experimental research results of fatigue design methods and design data of infinite life under uniaxial load.
本文提供了作者在单轴载荷下的无限寿命疲劳设计方法和设计数据研究方面的试验研究结果。
Experimental research and theoretical analysis of critical load selection, difference between specimens with and without fatigue crack, and crack length and width effects were carried out.
对其中临界荷载的选取、有无疲劳裂纹的差别以及裂纹长度和宽度的影响等进行了实验研究和理论分析。
The brake rims on drilling rig drawworks are subjected to heat load during string lowering and will end in thermal fatigue failure.
石油钻机绞车刹车鼓在下钻过程中，由于热负荷的作用会发生热疲劳破坏。
The fretting fatigue life under complex loads monotonously decreases with the increase of the high cycle load while the low cycle loads keep constant.
复合载荷下，低周幅值不变，增加高周载荷的幅值，微动疲劳寿命随幅值比的增加而降低。
The variational load engendered by hydraulic pressure undulation is one of the main factors of hydraulic pipe fatigue break.
因液体压力脉动形成的作用于液压导管的交变载荷是造成液压导管疲劳破裂的主要因素之一。
Three variables as temperature, load frequency and stress ratio are the critical parameters affecting fatigue crack growth behaviour in metallic material.
温度、载荷频率和应力比是影响材料疲劳裂纹扩展行为的主要因素。
They may subject to corrosion fatigue damage owing to the effect of random load imposed upon by sea waves, etc.
海浪等随机载荷的作用可能使立管产生腐蚀疲劳破坏。
The concrete constitutive properties coupling damage can be used for finite element analysis of concrete under fatigue load.
由此建立耦合损伤变量的混凝土本构关系模型，可用于疲劳荷载作用下混凝土的有限元分析。
The persistent slip bands were determined by the observations of the substructure near the surface of gear steels on fatigue load.
通过对在疲劳载荷作用下渗碳齿轮钢次表层亚结构的观察发现有持续滑移带形成。
The origination and propagation of fatigue crack in materials under variable load is the main style of failure.
疲劳裂纹的萌生和扩展是材料在变载荷作用下的主要失效形式。
The general problem in the fatigue test system that the amplitude and mean of load signal will be changed with test time and change of mechanical characters of specimens is analyzed.
分析了疲劳试验系统中存在的普遍问题，即试验载荷的峰值和均值随着试验时间和试件的机械性能变化而发生漂移。
The estimated life of a steel bridge subjected to random load in highly dependent upon damage accumulation caused by fatigue load.
对于承受随机载荷的钢桥，其寿命依赖于这种疲劳载荷造成的累积损伤。
The failure time of elements in structural system under dead load and fatigue load was studied.
对在静载荷和疲劳载荷共同作用下的结构系统中的各失效元件的失效时间进行研究。
Under the same strength technique conditions, the size of low cycle fatigue load will influence the strength effect, and the smaller load means more obvious effect.
在同样的强化工艺条件下，低循环疲劳载荷大小影响强化效果，载荷越小效果越明显。
The prediction of fatigue life is important for steel towers and so on, because for this type of structure wind load is regarded as the main load.
由于风荷载是钢塔架等钢结构的主要荷载，风荷载作用下上述结构的疲劳寿命预估因而是至关重要的。
A modifying coefficient of load frequency is used to describe the effect of load frequency on fatigue behavior in ultrasonic fatigue testing.
采用一个超声加载频率修正系数对超声疲劳性能试验中载荷频率对疲劳性能的影响进行修正。
This paper presents the structural features and characteristics of the radial impact tester, torsional fatigue tester, rotary bending tester and radial load tester used for the tests.
本文介绍了用于该试验的径向冲击试验机、扭转疲劳试验机、旋转弯曲疲劳试验机和径向载荷疲劳试验机的结构形式及性能特点。
According to fatigue damage accumulation theory, test load of verified fatigue test on rail across beam and welded connections with integral joint of combined steel truss bridge was gotten.
依据疲劳损伤累积理论，确定了公轨两用钢桁桥轨道横梁与整体节点连接头验证性疲劳试验的试验荷载。
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