比较各种疲劳损伤累积理论计算方法的优缺点。
The advantages and disadvantages of the fatigue damage cumulative rules are discussed.
爆破装药位置和药量对岩体损伤累积规律有一定的影响。
The charge and its position could influence the damage cumulative rules of rock mass.
然后推导出该疲劳损伤累积模型在多级加载下的递推公式。
The recurrence formula of the fatigue damage model is derived under multilevel loading, and the loading case below the fatigue limit is also considered.
并从微观分析到宏观现象，由模糊概率测度思想提出了岩石损伤累积方程。
Then a rock damage evolutional equation was proposed by the authors based on theory of fuzzy probability measurement, and on micro-analysis and macro-observations.
文中把疲劳损伤分为静拉伸损伤与循环损伤两部分，给出了损伤累积模型。
Fatigue damage is separated into two parts-static tension damage and cyclic damage. With the help of above analysis, a fatigue life estimation model is presented.
推荐了一种应变损伤累积模型，能够考虑单向板面内多轴应力和平均应力的影响。
A cumulative damage model is proposed, which can be used to consider the influence of in plane bi-axial stresses and mean stress on the fatigue behavior of unidirectional laminates.
两载荷水平及模式下的损伤累积以及损伤与物理机制的关系在本文中也做了介绍。
The damage accumulation in two loading levels and modes, and the relationship between the damage and the physical mechanism are reviewed in this paper.
首先将结构的初始损伤、使用过程中的损伤累积用主裂纹长度的分布加以定量描述。
The initial damage and the cumulative damage during operation are quantitatively measured with the main fatigue crack length in the structure.
最后，以空间网架结构在地震作用下的损伤累积分析为例，给出了本文方法的具体实施步骤。
Finally, this paper gives an example of damage cumulation analysis for spatial grid structures subjected to earthquakes together with the implementation steps of this method.
钢结构在服役过程中，因超载、疲劳等原因会引起损伤累积，极大地影响了结构的安全使用。
The cumulative damage of the steel structure occurred by overload, fatigue and other reasons in service may deteriorate the safety of the structure seriously.
金属构件常常因受到动载荷作用引起疲劳损伤，而疲劳损伤累积的结果往往导致裂纹的产生。
The fatigue damage of the metal material often happens under the action of the dynamic load. The accumulation of fatigue damage of the metal material leads to the result of surface fatigue cracks.
分析过程中，采用了损伤累积的方法，对每个载荷步的裂纹扩展进行累积，提高了结果的可信度。
In the analysis, damage accumulation method is used to track the crack propagation, which can improve the reliability.
分析认为，辊压后材料中位错的特殊结构和材料内部所形成的损伤累积是疲劳性能下降的主要原因。
It is considered that special structure of the dislocation and damage accumulation induced by rolled were main factors to make the fatigue strength of the welded joint reduced after rolled prestrain.
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。
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.
一般的线性损伤累积理论忽略了高频率低疲劳应力所引起的构件疲劳损伤，致使预测结果与实际寿命相差很大。
But the common linear fatigue damage cumulative rule neglects the fatigue damage which is brought by the high frequency and low stress.
“众所周知，人体机能损伤是会累积的。”他补充道。
"It was always known that the body accumulates damage," he added.
这样高的含量表明，这些患病孩子的脑组织已经暴露在了高氧化压力下，有可能会造成累积的损伤。
Such high levels suggest the brains of autistic children are exposed to a lot of oxidative stress, something that would probably cause cumulative damage.
糖尿病性视网膜病是失明的一主要病因，它是视网膜小血管长期累积损伤的结果。
Diabetic retinopathy is an important cause of blindness, and occurs as a result of long-term accumulated damage to the small blood vessels in the retina.
这种衰退的累积意味着我们生命的长度，是由细胞受损的速度和损伤被修复的效率之间的平衡控制的。
This degenerative buildup means that the length of our lives is regulated by the balance between how fast new damage strikes our cells and how efficiently this damage is corrected.
他把衰老形容为人体各处多种分子与细胞损伤的终生累积过程。
Dr DE Grey describes aging as the life-long accumulation of various types of molecular and cellular damage throughout the body.
试验结果表明，焊缝金属具有比较好的塑性变形能力，焊缝的损伤值与材料的累积塑性应变呈线性关系。
The experimental results showed that weld metal had enough plastic deformation capacity, and its damage value was linear with the cumulative plastic strain.
他把衰老描述为周身各种分子和细胞的损伤在一生中的累积。
He describes aging as the lifelong accumulation of various types of molecular and cellular damage throughout the body.
另外我们还知道不同组织的细胞dna的损伤随年龄的增加而累积。
It is also known that DNA damage accumulates with age in cells of a variety of tissue types.
建立了基于模糊累积损伤的构件疲劳可靠性干涉模型，导出了模糊可靠度评定的一般公式和仿真方法。
Fatigue reliability interference model is established based on fuzzy cumulative damage of components, then general formula and simulation methods of fuzzy reliability estimation are derived.
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 estimated life of a steel bridge subjected to random load in highly dependent upon damage accumulation caused by fatigue load.
次要的MRI结果，包括新T2损伤和T1低信号损伤的累积数，也显示了益处。
Secondary MRI outcomes, including cumulative number of new T2 lesions and T1 hypointense lesions, also showed benefit.
疲劳累积损伤规律是疲劳研究中的关键问题之一。
Fatigue accumulative damage rule is one of the most critical problems in the research of fatigue.
疲劳累积损伤规律是疲劳研究中的关键问题之一。
Fatigue accumulative damage rule is one of the most critical problems in the research of fatigue.
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