混凝土腐蚀疲劳破坏是交变应力与腐蚀介质耦合作用的结果，对其研究目前国内外还仅出于理论探索阶段。
The Corrosive fatigue damage of concrete is the result of the compound action of alternating stress and corrosion medium, and the study about this has just been.
分析了非均匀接触下燕尾形榫头连接的应力状态，并借助于模拟试验，提出了非均匀接触导致疲劳破坏的基本痕迹特征。
The basic fatigue failure characteristics have been analyzed according to the stress analysis and simulation test under inhomogeneous swallowtail between compressor disk and blade.
斜管开裂的主要原因是温度场下的低频应力疲劳破坏。
The main reason of inclined pipe fracture was low frequency stress fatigue failure at temperature field.
并且它形状复杂、刚性差，又存在严重的应力集中现象，容易产生疲劳破坏。
The shape is very complex, rigidity is poor. It exist serious stress concentrates, and it can cause fatigue break down easily.
石油钻柱的失效80 %以上都为疲劳破坏，这与钻柱在弯曲和扭转组合下的交变应力有关。
The fatigue rupture made up 80 percent of the total petroleum drillstring failures, which is related to the flexural-torsional alternate stress acted on drillstring.
应力集中是钻具疲劳破坏的一个关键因素，定量计算钻具在井下所承受的应力水平及其分布规律显得尤为重要。
The stress concentration is a key factor causing fatigue failures. It is very important to make a quantitative research on the stress level and distribution characteristics of BHA.
受架空输电导线拉力的影响，导线在夹持区易出现应力集中现象，在微风振动作用下，夹持区易产生疲劳断股破坏。
Therefore, the wire in the clamping region is prone to be damaged because of aeolian vibration of overhead transmission lines.
在此基础上提出一种新型的损伤参量，该损伤参量结合了剪应力功的概念和疲劳破坏的微观机制。
Based on this a new damage parameter, which combines shear stress work and micro-mechanism is provided.
应力集中是构件及节点发生疲劳破坏的重要因素之一。
Stress concentration is one of the important factors that cause fatigue undermine of the component and joints.
重点分析了应力幅值、波形、频率等因素对岩石疲劳破坏寿命的影响规律。
It was emphasized that the fatigue life of rock sample was influenced by stress amplitudes, waveforms and frequencies.
3减速机为垂直轴形式，第一级输入轴为伞齿轮轴，在伞齿轮支承轴承处过渡轴肩处出现较严重的应力集中而发生疲劳破坏。
3 the reducer is in the form of vertical shaft, the first input shaft is the bevel gear shaft, and the more serious stress concentration occurs at the transition shaft of the bevel gear bearing.
2减速机输入轴处轴肩处未细致考虑过渡圆角的曲率半径和变化曲线使应力集中严重发生疲劳破坏。
2 the curvature radius and the change curve of the transition fillet at the shoulder of the input shaft of the reducer are not carefully considered.
2减速机输入轴处轴肩处未细致考虑过渡圆角的曲率半径和变化曲线使应力集中严重发生疲劳破坏。
2 the curvature radius and the change curve of the transition fillet at the shoulder of the input shaft of the reducer are not carefully considered.
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