The results indicate that the crack driving force in harder medium is less than that in softer medium.
结果表明，裂纹位于较硬介质中的裂纹驱动力小于裂纹位于较软介质中的裂纹驱动力。
The crack driving force parameter (J-integral) is calculated and analyzed using ANSYS software in this thesis.
本研究利用ANSYS有限元软件计算和分析裂纹驱动力参量J积分。
When the crack is close to the interface, the crack driving force in harder medium will increase and that in softer medium will decrease.
当裂纹靠近界面时，较硬介质中裂纹驱动力将增大，而较软介质中裂纹驱动力将减小。
Meanwhile, the influences of pipeline internal pressure, wall thickness, crack arrest length and initial crack velocity on the crack driving force (crack propagation) are further studied.
进而分析了管道内压、壁厚、裂纹止裂长度和初始裂纹速度对裂纹驱动力(也即裂纹扩展)的影响。
The crack driving force in the bi-material is analyzed and the variations of J-integral with the bi-material parameters and the distance between crack and interface are studied in this thesis.
本研究对双相介质材料中的裂纹驱动力参量进行分析，研究J积分随双相界质材料特性的差异和裂纹到界面距离的变化规律。
The results indicate that, the elastic-plastic mismatch of components has significant influence on the near-tip "driving force" of fatigue crack growth.
结果表明，界面两侧材料的弹塑性失配对复合板面裂纹的扩展驱动力具有重要影响。
This paper has simulated the driving force of solidification crack of stainless steels, namely the, stress strain field in the trail of molten weld pool.
对不锈钢凝固裂纹的驱动力即熔池尾部应变场进行了模拟。
The mitigation of residual stress decreases the driving force for crack propagation, and leads to higher fatigue…
残余应力的降低使得疲劳裂纹扩展的驱动力减小，接头的疲劳强度提高。
The mitigation of residual stress decreases the driving force for crack propagation, and leads to higher fatigue…
残余应力的降低使得疲劳裂纹扩展的驱动力减小，接头的疲劳强度提高。
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