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。
At first, small wave load have caused an amount of damage and decrease the ultimate bearing capability to the structures, then fatigue load have caused wholly destroy.
首先因较小的波浪载荷引起一定的疲劳损伤并造成极限承载能力的下降，然后因极限波浪载荷而引起结构的完全破坏。
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。
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。
It is possible that many failure modes have emergence during the structural service period. For example, dead load strength failure, stiffness failure and fatigue failure.
结构在使用过程中可能会出现各种失效形式，例如静载强度失效、刚度失效和疲劳失效等失效形式。
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 probability fatigue life - span of pressure vessel under the action of different cycle load is closely related to the cycle load with high stress.
承受不同循环载荷共同作用的压力容器，其概率疲劳寿命和在高应力水平上的循环载荷有着密切的关系。
With the welding spot fatigue lifetime pre-estimation method, by combination of the finite element analysis and stress calculation, the welding spot fatigue damage under actual load can be calculated.
采用焊点疲劳寿命预估方法，通过有限元分析并结合应力计算，即可计算出实际载荷工况下的焊点疲劳损伤。
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。
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；
To evaluate the fatigue life of tower crane, research the load status of tower crane.
目的研究塔式起重机工程载荷状态，提供评估塔式起重机疲劳寿命的依据。
Always has been attending, many years come round about male athlete's load ability, organism fatigue and renew problem, in sport training and competition.
男子运动员负荷能力与机体疲劳及恢复问题，多年来一直是运动训练和竞赛中关注的焦点。
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 composite material has resulted in greater load carrying capacity, a reduced thermal expansion, greater wear resistance and fatigue endurance.
合成材料具有更好的承载能力，更低的热膨胀系数，更好的耐磨性和更好的抗疲劳性能。
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。
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。
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 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 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。
With the critical load, the residual fatigue strength after low amplitude load strengthening and the region for the optimal strengthening load of transmission gears are estimated.
应用该方法，从临界载荷估算出了传动系齿轮最佳强化载荷出现的区域及其经受低载强化后的剩余疲劳强度。
Corrosion fatigue damage of concrete is the coupling action result of corrosion medium and load fatigue, and the study on this has been in the stage of theory search.
混凝土腐蚀疲劳破坏是腐蚀介质与交变荷载耦合作用的结果，对其研究目前国内外还仅处于理论探索阶段。
Load capacity contained by calculating safety factor that resistant to fatigue damage caused by the maximum load force.
负载能力通过计算抵抗最大负载力造成的疲劳毁损的安全系数得出。
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。
The simulation torsion load can be used to make up torsion fatigue load spectrum for test and estimate the fatigue life of component parts of truck transmission system.
计算载荷可以用来编制货车传动系统扭转疲劳试验载荷谱、估计零部件的疲劳寿命。
Static stress field can be reliably applied to analyse initiation and extension of contact fatigue cracks under motive load.
证明了用静应力场分析动载下接触疲劳裂纹形成与扩展的可靠性；
The propagation of surface cracks in welded connections made of type "921A" steel has been investigated experimentally under bending fatigue load and in the corrosive environment of seawater.
本文对921A钢焊接接头在海水腐蚀环境下受弯曲疲劳载菏作用时表面裂纹扩展规律进行了试验研究。
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。
Analysis of test results of concrete beams which are subject to static and fatigue load is formulated.
给出混凝土梁试样静态和疲劳弯曲损伤度试验分析计算式。
The first frequency method of estimating the fatigue serviceability on small and medium span railway concrete bridge is discussed in this paper through three piece test beam under fatigue load.
通过三片模拟梁试验实测结果，探讨了基频法评估铁路桥梁疲劳使用性能的可行性。
The first frequency method of estimating the fatigue serviceability on small and medium span railway concrete bridge is discussed in this paper through three piece test beam under fatigue load.
通过三片模拟梁试验实测结果，探讨了基频法评估铁路桥梁疲劳使用性能的可行性。
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