The dynamic effects due to vibration should be taken into account by the designer if fatigue failure is to be avoided.
为了避免弹簧的疲劳破坏，设计者应对弹簧由振动所引起的动力影响加以考虑。
Thermal fatigue. A type of fatigue failure wherein the cyclic stresses are introduced by fluctuating thermal stresses.
一种疲劳失效类型，循环应力是由于交变热应力引起的。
The patients who qualified were debilitated by the disease, which causes shortness of breath, fatigue and congestive heart failure.
适合的患者是很虚弱的，因这种病导致导致呼吸困难、劳累和充血性心力衰竭。
The cause of the fatigue failure is analyzed by actual measurement and FEM analysis. The reinforcement process methods and the design account for the fatigue failure are presented.
通过实际测量和有限元计算，分析了产生疲劳破坏的原因，提出了针对这种疲劳破坏的加固处理方法和在设计上应采取的措施。
The primary failure model is fatigue fracture that is always resulted by the crack initiation and propagation.
疲劳断裂是气门弹簧失效的主要模式，它是疲劳裂纹萌生及其扩展的结果。
The cyclic strain low cycle fatigue and cyclic stress ratcheting failure of 45 carbon steel treated by quenching and tempering were experimentally investigated.
对调质处理的45碳索结构钢进行了应变循环低周疲劳实验以及应力控制棘轮失效实验。
Bearing contact fatigue failure of the working surface by means of alternating the role of stress arising from failure.
接触疲劳失效系指轴承工作表面受到交变应力的作用而产生失效。
Availability of this method was verified by the failure life data of fatigue sample.
疲劳试件失效寿命数据验证了方法的有效性。
This article describes the phenomenon, effect factors and distinguishable characteristics of fretting fatigue damage failure by real case.
介绍了微动疲劳损伤失效的现象，影响因素，鉴别特征，并举例说明。
It revealed that alternating stress in long time cause the bolt fatigue failure, meanwhile the failure process was also effected by superheating steam.
认为主要原因是螺栓在长期服役中受交变应力引起疲劳失效所致。过热蒸汽介质对疲劳失效有影响。
By analyzing the working condition and failure mechanism of packing box, it is proved in theory that fretting fatigue results in the failure of packing box.
通过对填料盘工作状况和失效机制的理论分析，进而在理论上证明了填料盘的开裂是由于微动疲劳造成的。
Therefore it can be judged that the fractures in the tubing are fatigue fractures and the tubing failure is caused by fatigue fracture.
由此可以断定油管断口属疲劳断口，油管的断裂失效性质是疲劳断裂。
Through analysis and fatigue test research to the super - void - water pressure, there is a new cognition that is the failure form and the influence in life of pavement structure by void - water.
通过对超孔隙水压的分析和疲劳试验研究，探讨了空隙水对路面结构的破坏形式和疲劳寿命的影响。
By the action of high roatry speed, excentric shaft connection intensifies the fatigue failure of drill tool.
为了达到较好的防斜目的，必须增大钻进时钻头的转速，在高转速的作用下，偏轴接头加剧了钻具先期疲劳失效。
The fatigue crack growth curve from initial crack size till fatigue failure is simulated step by step.
循环续循环模拟计算出裂纹从初始长度一直到疲劳破坏的扩展曲线。
The results shown that the rupture is caused by corrosion fatigue. The main reasons of failure of main vapour tube are unqualified valve material and unreasonable welded construction.
结果表明，断裂是由腐蚀疲劳引起的，阀体材质不舍格和焊接结构不合理是主蒸汽管失效的主要原因。
Heart failure is characterized by shortness of breath, fatigue and worsening function of the heart's ability to pump.
心衰具有气短、疲乏以及心脏泵血功能的降低等特点。
The stress state of the whole hanger is calculated by the finite element method. Then, the failure of the hanger of ropeway is also determined by the second fatigue chart.
用有限元的方法计算了整个吊架的应力分布，在此基础上用第二类疲劳图验证了索道吊架的失效模式。
Through analysis, the failure reason was confirmed as that the low cycle fatigue caused by plastic deformation occurred in the lead alloy, thus the fracture occurred.
分析其失效原因为铅合金在外力作用下，产生塑性变形引起的低周疲劳，造成断裂。
As the fatigue failure of asphalt pavement which caused by axle load changes with season, the effect of season should be considered when axle load transformation computation is made.
由于不同季节轴载对沥青路面疲劳损坏影响的不同，应在轴载换算时进行季节修正。
The thermal shock failure of ceramic coating is essentially the fatigue failure induced by cyclic thermal stress during repeated heating and cooling.
陶瓷涂层的热震失效是由于涂层在循环加热和冷却过程中，涂层内产生循环热应力，导致涂层发生热疲劳失效。
Since the main failure reason of the steel rope is the fatigue of the metal, the fatigue reliability design of the crane steel rope can be executed by means of stress-strength interference model.
根据起重机钢丝绳失效主要是金属疲劳的原理，采用应力-强度干涉模型，对起重机钢丝绳进行了疲劳可靠性设计。
It is indicated that the failure of the tube coils is mainly caused by heat fatigue.
认为取热管的失效主要由于热疲劳造成的。
The results show that the failure of the engine counterweight washer is caused by corrosion fatigue.
结果表明，该发动机配重挡片失效是疲劳断裂。
Alternating stress produced by alternating dynamic ice force evidently results in the partial fatigue failure.
交变冰力引起的结构交变应力必将导致结构的局部疲劳损伤。
This paper studies the relationship between the static toughness and fatigue failure firstly, then getting the damage formula expressed by toughness.
本文研究了材料的静力韧性与疲劳损伤之间的关系，并在此基础上得到用韧性表示的损伤表达式。
Unlike the traditional idea that the failure of brake hub is mainly caused by abrasion, it is discovered that the main failure mechanism is the cracking caused by temperature different fatigue.
本发明改变了一直认为刹车毂失效的主要方式是磨损的传统观念，发现了其失效主要方式是冷热疲劳引起的开裂。
Through analysis many times, the main reason is fatigue failure that is caused by stress concentration and surface quality.
经多次分析，确定主要原因是应力集中和表面质量差引起的疲劳失效。
Through analysis many times, the main reason is fatigue failure that is caused by stress concentration and surface quality.
经多次分析，确定主要原因是应力集中和表面质量差引起的疲劳失效。
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