分别求得了裂纹尖端应力强度因子的解析解。
The analytic solutions of the stress intensity factors at the crack tip are obtained.
分析了冷扩张对疲劳裂纹尖端应力强度因子分布的影响。
The influence of cold expansion on the stress intensity factor distribution in crack tip was also analyzed.
研究结果表明，ANSYS程序裂纹尖端应力强度因子计算方法的计算精度可以满足工程设计和分析需要。
The results show that the accuracy for crack tip stress intensity factor using ANSYS software is enough for engineering designs and analysis.
介绍数字图像相关方法的基本原理，建立数字图像相关方法中位移场与裂纹尖端应力强度因子之间的关系。
The principle of the digital image correlation method was described, and the relation between the crack tip displacement and the stress intensity factor was deduced using least squares fitting.
由数字图像相关方法所得位移场提取不同载荷作用下裂纹尖端应力强度因子，并分析最小二乘拟合项数、数字图像相关计算子区域和步长大小对计算结果的影响。
The stress intensity factor was extracted from the displacement field, and the effects of the number of terms, subset size and subset spacing on the calculation results were analysed.
应力强度因子(K)：断裂力学中使用的一个因子，说明裂纹尖端处的应力强度。
Stress intensity factor (k). A factor used in fracture mechanics to specify the stress intensity at the tip of a crack.
首先推导了双材料界面裂纹尖端的位移场和应力强度因子之间的关系式。
The relative equation between stress intensity factor and displacement field near interface crack tip of bimaterials was derived firstly.
给出了瞬态的位移场和运动裂纹尖端的动态应力强度因子。
The transient displacement field and the dynamic stress intensity factor at the moving crack tip are obtained.
其主要任务是确定构型裂纹尖端的应力强度因子。
The main job is to find the stress intensity factors for crack configurations.
利用裂纹尖端的奇异元和线性元插值模型，给出了扭转刚度和应力强度因子的边界元计算公式。
Using the interpolation models for both singular crack tip elements and other crack linear elements, the boundary element formulas of the torsion rigidity and stress intensity factors were given.
而裂纹板经复合材料补片胶接修补后，平行于裂纹方向的拉压应力对裂纹尖端的应力强度因子具有耦合效应，并且这种耦合效应的大小与补片的铺层含量有很大的关系。
While with a composite patch, there exists coupling effect between the normal stress parallel to crack and the SIF, and the coupling effect is significantly dependent on ply orientation of the patch.
结果表明，在正确选择复合材料补片的参数后，修补后铝合金板裂纹尖端的应力强度因子有显著地下降。
The results show that the stress intensity factor after bonding would decrease obviously if the composite patch parameters were selected properly.
文中首先给出了杂交模式的裂纹尖端奇异单元的刚度矩阵，然后基于随机场的局部平均理论和一阶泰勒展开得到了应力强度因子均值和方差的计算公式。
The stiffness matrix of a hybrid crack-tip singular element is first derived, then by use of first-order Taylor expansion the mean and variance of stress intensity factors are formulated.
在极限情形下，不仅可以还原为已有的结果，而且给出带双对称裂纹的圆形孔口在裂纹尖端的应力强度因子。
Under the conditions of limitation, not only known results can be obtained but also the solutions of the SIFs at the crack tip of a circular hole with two symmetrical cracks were found out.
以混凝土单轴拉压损伤为基础，给出了单元弹性损伤本构关系，分析了裂纹尖端损伤微裂区尺寸，定义了有效应力强度因子，给出了I型裂纹损伤断裂判据。
Mesoscopic damage size on the top of crack is analysed, the effective stress strength factor is defined, the mode I crack damage fracture criteria is presented.
反映裂纹尖端附近区域应力场强度的物理量称为应力强度因子。它和裂纹大小、形状以及外应力有关。
A computation program has been developed, using a two dimension boundary element method, for calculation of stress strength factor at the welding crackle tip.
讨论了界面两个共线裂纹与SH波的散射结果，给出了裂纹尖端动应力强度因子随介质参数变化的分布规律。
As an example, the scattering of SH-wave from only two interface co-linear cracks is discussed. The distributed regularities of the crack DSIF are determined when the medium parameters are altered.
最后，电位移强度因子和裂纹尖端的应力强度因子之间的关系可以得到。
Finally, the relations between electric displacement intensity factors and stress intensity factors at crack tips can be obtained.
应力强度因子表征了裂纹尖端奇异应力场的强度，它是研究裂纹扩展规律和带裂纹构件强度的基础。
Stress intensity factor indicates the strength of the singular stress field at crack-tip, it is the basis of studying the law of crack propagating and the strength of the component with crack.
研究了裂纹尖端圆弧对应力强度因子的影响，分别计算了具有不同裂尖圆弧 的I型裂纹的应力强度因子。
The effect of crack tip arc on stress intensity factor is studied assuming plane stress condition. The stress intensity factors KI with different crack tip arcs are separately calculated.
没有补片时，平行于裂纹方向的拉压应力对裂纹尖端的应力强度因子没有影响。
Without the patch, a tensile or compressive stress parallel to the crack would have no effect on the SIF at the crack tip.
没有补片时，平行于裂纹方向的拉压应力对裂纹尖端的应力强度因子没有影响。
Without the patch, a tensile or compressive stress parallel to the crack has no effect on the SIF at the crack tip. While with a…
没有补片时，平行于裂纹方向的拉压应力对裂纹尖端的应力强度因子没有影响。
Without the patch, a tensile or compressive stress parallel to the crack has no effect on the SIF at the crack tip. While with a…
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