残余压应力使缺口处裂纹闭合力增大甚至可出现非扩展裂纹。
Compressive residual stress increases the crack closure effect at the notch and may lead to a non-propagating crack.
残余压应力使缺口处裂纹闭合力增大甚至可出现非扩展裂纹。
Compressive residual stress increases the crack closure effect at the notch and may lead to a non-pr...
疲劳裂纹在残余压应力场中的扩展可借助于裂纹闭合力来描述。
Fatigue crack propagation in a compressive residual stress field can be characterized with the closure effect.
同时，显露出强的短裂纹效应，系因裂纹闭合效应的尾迹依赖性。
On the other hand, the stronger short crack effect is exhibited, which is attributed the dependent mentality of closure effect on crack wake.
试验和分析结果表明，短裂纹扩展的偏折强烈，裂纹闭合效应较小。
The results turn out to be that the short cracks exhibit severe crack deflection and week crack closure effect.
在焊接试件中有显著的裂纹闭合现象，其原因是焊接残余应力的作用。
There is significant closure in welded specimen due to the effect of welding residual stress.
在建立裂纹扩展模型的时候，要考虑到裂纹长度对裂纹闭合效应的影响。
The simulating results have indicated that: the crack closure effect is obviously influenced by the fatigue crack length.
采用CT试样研究了8090铝锂合金疲劳裂纹扩展行为与裂纹闭合效应。
The growth and closure characteristics of fatigue cracks were studied by using CT type specimens in 8090 Aluminium-Lithium alloy.
本文研究了SCT试样高应变区的疲劳裂纹闭合效应和疲劳裂纹扩展速率。
The fatigue crack closure and fatigue crack growth rate in the high strain region of SCT specimen are studied.
此外，还就疲劳裂纹闭合现象的几种有代表性的定量模型做了介绍和评论。
The typical quantitative models on the crack closure are introduced and commented as well.
用激光干涉应变-位移测量仪（ISDG）进行了裂纹闭合点的高精度动态测量。
The crack closure is dynamically measured by means of interferometric strain-displacement gauge(ISDG).
而在管线钢基材中裂纹闭合现象较小，闭合原因是裂纹尖端尾部的残余塑性变形。
Crack closure of base metal is caused by the residual plastic plastic deformation remaining in the wake of an advancing crack tip and is not as significant as in welded specimen.
采用虚拟裂纹闭合技术计算裂纹扩展的应变能释放率，并对裂纹扩展寿命进行计算。
The strain energy release rate of the crack propagation was calculated by using virtual crack closure technique, and fatigue life was forecasted.
在排除焊接残余应力导致的裂纹闭合效应后，焊缝及热影响区疲劳裂纹扩展速率与基材相当。
Having excluded the effect of welding residual tresses on crack closure, fatigue crack growth rates of the welded join...
在排除焊接残余应力导致的裂纹闭合效应后，焊缝及热影响区疲劳裂纹扩展速率与基材相当。
Moreover, the fatigue crack growth rates of the weld metal and heat affected zone are lower than those of the base metal. Having excluded the effect of welding residual tress...
分析表明，塑性诱发裂纹闭合在腐蚀条件下的变化是造成超载后裂纹扩展规律变化的主要原因之一。
The theoretical analysis indicated that the crack closure effect was mainly responsible for the change of crack growth retardation in corrosion fatigue.
提出一种改进的虚裂纹闭合技术(VCCT)对轮胎带束(一种复合材料结构)不同脱层长度下的应变能释放率进行了计算。
In this paper, a modified VCCT (Virtual Crack Close Technology) is developed to compute strain energy release rates of tire belt (a kind of composite structure) under different delamination lengths.
室温蠕变对裂纹扩展产生延滞的原因主要是裂纹闭合，同时裂尖钝化、裂纹偏折及形变诱发马氏体的形成也会起到一定的作用。
It turns out that crack closure is the main reason for retardation, and crack tip blunting, crack deflection and strain-induced martensite would reinforce it.
以焊接处微观结构缺陷尺寸作为初始裂纹尺寸，采用基于裂纹闭合的全寿命预测模型，以焊接区域不同位置的长裂纹扩展速率曲线作为基线，利用J。
Fatigue life prediction from the initial crack size to failure based on long crack propagation at different zones of welded joint was made by using j.
根据不同电流等级及不同触头闭合压力，对银基触头材料裂纹类型及形成机理进行了分析研究。
The study on crack types and their formation mechanisms of silver based contact materials are carried out according to the various currents and various contact closed forces.
接近锯切口和沿着边缘的裂纹部分相对于裂纹面中心而肯定是闭合的。
The portions of the crack near the saw cut and along the edges are closed in relation to the center of the crack face .
实验还观察到砂岩表面微缺陷发生闭合的全过程，在冷却过程也有微裂纹形成等现象。
Also a closing course of initial crack and thermal cracking coming into being in the cooling process are observed in our experiment.
较高的疲劳性能与裂纹尖端闭合应力、断口表面粗糙度以及裂纹扩展路径弯折程度有关。
The high fatigue properties were found to be related with higher crack closure stress, rough fracture surface and tortuousity of crack path.
探讨了压剪闭合共线双裂纹之间奇异应力场的相互作用。
Futhermore, the interaction of the singular stress field between, two initially closed collinear cracks is also studied by photoelasticity.
粗晶组织比细晶组织的裂纹偏折更大，粗糙度诱发闭合效应更强，因而裂纹扩展较幔。
The short cracks deflect more severe in coarse grain structure than in fine grain one, result in roughness induced crack closure effect, therefore exhibit slow crack growth rate.
在考虑裂纹受压闭合与滑动摩擦的基础上，给出了损伤张量、损伤应变及有效弹性常数。
Considering the crack-closing and friction between crack-surface under compression, the damage tensor, damage strain and effective elastic moduli are formulated.
在此模型中，裂尖的三维约束状态显著影响超载塑性区，从而显著影响裂纹的闭合和扩展速率。
In this model, the plastic zone induced by the overload is affected by the three-dimensional constraints, and it leads to significant influence on the crack closure and growth rate.
在此模型中，裂尖的三维约束状态显著影响超载塑性区，从而显著影响裂纹的闭合和扩展速率。
In this model, the plastic zone induced by the overload is affected by the three-dimensional constraints, and it leads to significant influence on the crack closure and growth rate.
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