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• The relatively small reduction in stress intensity magnification factor with increasing stiffness of the stiffener.

随著加强刚度增加应力强度放大因数则相应有所减小

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• Stress intensity factor (k). A factor used in fracture mechanics to specify the stress intensity at the tip of a crack.

应力强度因子(K)：断裂力学使用一个因子说明裂纹尖端处应力强度

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• Because of the complexity in mathematics and the physics, solving the three-dimensional dynamic stress intensity factors is certainly limit.

裂纹动态断裂力学中由于数学物理上复杂性求解动态应力强度因子受到一定限制

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• In this article a solution is found of the stress intensity factors in five cases. The solution is based on Airy stress function and the method of weighted residuals.

求解五种情况应力强度因子采用的方法艾雷应力函数加权残数法

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• So the stress intensity factors can be obtained by the displacement discontinuities.

基于裂纹表面位移间断计算结果得到了裂纹前沿的应力强度因子

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• The result indicates that the maximum of dynamical stress intensity factor arrives behind the load time and increases with the size of thick wall cylinder.

结果表明动态应力强度因子最大值加载时间滞后性现象，它最大值尺寸增加增加

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• In this thesis, the stress intensity factors of top-down cracks caused by loading are calculated using three dimensional finite element model and compared to the results of plane strain model.

本文采用有限元模型分析荷载作用下自上而下裂缝尖端应力强度因子平面应变模型分析结果进行比较

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• Through the calculation of amendatory stress intensity factors of the crack-tip under the condition of small scale yielding, the disadvantage of the method of equivalent crack length is found.

简要介绍断裂力学发展，通过范围屈服条件裂纹尖端修正应力强度因子计算发现用等效裂纹长度方法不足

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• The results show that when the annular crack is away from the interface, the normalized stress intensity factors at the crack tips decrease with increasing time.

结果表明，给定长度的环形裂纹尚未接触界面时，两端正则型和型应力强度因子时间增大而减小

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• Based on this kind of crack element, and by introducing parametric equation of ellipse, a new method for estimating stress intensity factor is proposed.

基于这种裂纹单元作者引入椭圆参数方程推出一种计算裂纹前缘点应力强度因子方法

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• We study stress intensity factor of thick wall cylinder with cracks under dynamic load.

研究载荷作用裂纹应力强度因子

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• Based on testing results, the relationship between velocity of granite subcritical crack growth and stress intensity factor, and the fracture toughness are obtained respectively.

根据试验结果得到了花岗岩亚临界裂纹扩展速度应力强度因子之间关系花岗岩断裂度。

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• The threshold value of the crack opening stress intensity factor is formulated as a function of the hardness, the applied stress and the crack extension.

裂纹张开应力强度因子门槛可近似用个包括材料硬度应力水平裂纹扩展量等参数函数表示。

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• Through computing the opening displacements in the vicinity of the crack tip, the stress intensity factor at the crack tip can be obtained by displacement extrapolation method.

通过计算裂纹尖端附近张开位移利用位移外推插值得到裂纹尖端应力强度因子结果

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• Stress intensity factors at vertical crack tips and numerical results of pressure under punch are obtained.

最后得到垂直裂纹端点应力强度因子压头下方压力数值

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• For the question of the calculation of the stress intensity factors for the three-dimensional, traditional methods of generation nodes mainly rely on our hands, then generate elements and structures.

但在对裂纹应力强度因子求解问题上目前所采用方法主要人工手动地生成节点然后再生成单元结构

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• A formula for calculating dynamic stress intensity factor of three-poi nt bending specimen is obtained by taking the impact velocity effect on dynamics tress intensity factor into account.

采用振动理论分析三点弯曲试样动态响应，得到个计及冲击速度影响动态应力强度因子计算公式

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• Based on the principles of transmitted caustics as well as photoelasticity, the two techniques in determining stress intensity factors (SIF) are compared.

弹性法及线法基本原理为基础两种方法确定应力强度因子方面进行比较

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• This result supports previous fracture models that are based on absolute reaction rate theory and predicts an exponential dependence of crack extension rate on applied stress intensity.

结果支持基于绝对反应速率理论的光纤断裂模型预测裂纹扩张速率与外部应力强度关系。

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• The relative equation between stress intensity factor and displacement field near interface crack tip of bimaterials was derived firstly.

首先推导了双材料界面裂纹尖端位移应力强度因子之间关系式。

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• The calculating example shows that a stable stress intensity factor can be obtained by selecting a proper calculating boundary and changing the geometric scale of the region.

计算实践表明选择适当的计算边界改变计算区域几何比例方法可以求得稳定应力强度因子

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• When the bridging load, the total external load, the bridging stress and the bridging stress intensity factors are jointly solved, a complete bridging profile is described.

载荷总体载荷应力应力强度因子之间关系联合求解时描述了一个完全轮廓

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• After depicting the singularity of stress field at the top of crack, the finite element method to calculate stress intensity factor of plain fracture problems is established.

具体内容包括：对反射裂缝尖端应力场奇异性进行描述建立平面断裂问题应力强度因子有限元

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• It is important for the design of pressure vessels to study stress intensity of this type of structure.

研究这种结构应力强度对于压力容器设计具有重要意义

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• The results show that the accuracy for crack tip stress intensity factor using ANSYS software is enough for engineering designs and analysis.

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分析需要。

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• A new method of testing the critical stress intensity factor for stress corrosion cracking based on linear-elastic fracture mechanics theory and stress corrosion cracking theory was put forward.

应力腐蚀临界应力强度因子测试方法基于线弹性继力学理论应力腐蚀理论提出一种新的测试方法

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• This paper proposes a special three-node non-isoparametric curved boundary element, for the computation of two-dimensional stress intensity factor.

本文针对二维裂纹应力强度因子计算提出一种特殊三点非等参曲线边界

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• This paper proposes a special three-node non-isoparametric curved boundary element, for the computation of two-dimensional stress intensity factor.

本文针对二维裂纹应力强度因子计算提出一种特殊三点非等参曲线边界

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