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crack tip damage
相关语句
  裂尖损伤区
     A Fatigue Crack Propagation Model Based on Crack Tip Damage Zone
     一种基于裂尖损伤区的裂纹扩展模型
短句来源
     he processes of damage initiation and evolution ahead of a crack tip in resin matrix composite material were in-situ observed during loading inside a SEM. Results show that for the Graphite/Epoxy compsiste AS4/3502,the micromechanism of crack tip damage is microcrack initiation,growth and coalescence,which toughens the material through increasing its resistance to crack propagation.
     用扫描电镜对ENF试样在加载及保持过程中裂尖损伤的萌生、演化过程进行了原位观察研究.结果表明石墨/环氧复合材料AS4/3502裂尖损伤的微观机制是微裂纹的萌生、长大及合并.裂尖损伤区内经历的微损伤过程增加了材料的裂纹扩展抗力而使材料得到韧化.
短句来源
     A concept of “crack tip damage zone” is set up in the present paper. According to the stress strain analysis in the crack tip damage zone by using the analytical closure model, a fatigue crack propagation model under variable amplitude loading is also established based on the damage accumulation theory.
     提出了“裂尖损伤区”的概念,通过解析闭合模型对裂尖损伤区的应力应变历程进行了分析,应用累积损伤理论建立了一个用于分析变幅载荷下疲劳裂纹扩展寿命的模型。
短句来源
  裂尖损伤
     A Fatigue Crack Propagation Model Based on Crack Tip Damage Zone
     一种基于裂尖损伤区的裂纹扩展模型
短句来源
     he processes of damage initiation and evolution ahead of a crack tip in resin matrix composite material were in-situ observed during loading inside a SEM. Results show that for the Graphite/Epoxy compsiste AS4/3502,the micromechanism of crack tip damage is microcrack initiation,growth and coalescence,which toughens the material through increasing its resistance to crack propagation.
     用扫描电镜对ENF试样在加载及保持过程中裂尖损伤的萌生、演化过程进行了原位观察研究.结果表明石墨/环氧复合材料AS4/3502裂尖损伤的微观机制是微裂纹的萌生、长大及合并.裂尖损伤区内经历的微损伤过程增加了材料的裂纹扩展抗力而使材料得到韧化.
短句来源
     A concept of “crack tip damage zone” is set up in the present paper. According to the stress strain analysis in the crack tip damage zone by using the analytical closure model, a fatigue crack propagation model under variable amplitude loading is also established based on the damage accumulation theory.
     提出了“裂尖损伤区”的概念,通过解析闭合模型对裂尖损伤区的应力应变历程进行了分析,应用累积损伤理论建立了一个用于分析变幅载荷下疲劳裂纹扩展寿命的模型。
短句来源
  “crack tip damage”译为未确定词的双语例句
     Research of crack tip damage for metals material
     金属材料裂纹尖端损伤研究
短句来源
     Direct Observation and Analysis on the Crack Tip Damage of Resin Matrix Composite
     树脂基复合材料裂尖损伤的直接观察与分析
短句来源
     CRACK TIP DAMAGE AND CRAZING IN POLYMERS UNDER LOADING
     受载高聚物裂尖的损伤和银纹化
短句来源
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  crack tip damage
Effective values of C* based on a damage mechanics approach were then calculated in an attempt to determine the multiaxial stress parameter that most accurately characterizes the stresses driving crack tip damage.
      
Effective values of C* based on a damage mechanics approach were then calculated in an attempt to determine the multiaxial stress parameter that most accurately characterizes the stresses driving crack tip damage.
      
Better understanding of crack tip damage accumulation and fracture surface facet crystallography is required for Al-Li alloys with varying slip localization.
      
Formation and growth of the crack tip damage zone during slow stepwise crack propagation in polyethylene resins was studied experimentally.
      
It was found that the crack tip damage zone of the rubber-modified epoxy appeared to consist of multiple craze-like damage and massive shear banding using optical microscopy.
      
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The damage theory is used to study the region of the crack tip and the crack tip damage field is obtained. A near-field damage criterion D|r=dr =Dc is proposed based on micro experimental analysis and the relationship δc-dT between macro mechanical parameter and the microstructural parameter of material is established. The microstructural change around the crack tip during experimental loading as well as crack propagation has been observed with SEM. The damage criterion relationship...

The damage theory is used to study the region of the crack tip and the crack tip damage field is obtained. A near-field damage criterion D|r=dr =Dc is proposed based on micro experimental analysis and the relationship δc-dT between macro mechanical parameter and the microstructural parameter of material is established. The microstructural change around the crack tip during experimental loading as well as crack propagation has been observed with SEM. The damage criterion relationship is verified by experimental results and it is shown that the stress, strain and damage at a certain distance from the crack tip are important factors for the control of tough fracture.

本文应用损伤理论研究裂纹尖端区域,得到了裂纹尖端的损伤场。根据细观实验分析提出了一个近场损伤准则,建立了宏观力学参量与材料细观组织参量之间的关系,并用实验结果进行了验证。

Damage mechanics and fracture mechanics are used to study the mode I crack-tip plasticdamage field of harding materials. A new continuum damage model for ductile fracture is introduced first,which can describe the effects of deformation and triaxial stress constraint onfailure.Then Crack-tip damage zone and the solution of crack-tip damage field are derived byuse of uncoupled approach. Typical examples for C -Mn and DE36 steels are presented, andsome...

Damage mechanics and fracture mechanics are used to study the mode I crack-tip plasticdamage field of harding materials. A new continuum damage model for ductile fracture is introduced first,which can describe the effects of deformation and triaxial stress constraint onfailure.Then Crack-tip damage zone and the solution of crack-tip damage field are derived byuse of uncoupled approach. Typical examples for C -Mn and DE36 steels are presented, andsome interesting results are obtained.

用损伤力学和断裂力学相结合的方法,研究了硬化材料平面应变Ⅰ型裂纹尖端的塑性损伤场。首先引入了一个新的能同时反映变形和三轴应力约束对破坏影响的一般韧性损伤模型。然后用非耦合算法,求得了Ⅰ型裂纹损伤区的形状和大小,给出了裂尖损伤分布的解析表达式,并以C-Mn钢和DE36钢为例做了具体分析,获得了一些有意义的结果。

An abrupt damage model,taking full account of finite geometry changes,is used to study both the shapes of damaSe zones and the stress strain fields for a plane-strain tensile crack under the small scale yielding condition. Two typical crack-tip damage profiles are simulated by means of element vanish technique. The corresponding fracture toughness increment due to damage dissipation is evaluated in terms of the energy release rate.

根据Bui的脆性损伤理论,本文研究Ⅰ型拉伸裂纹的平面应变过程区及其力学场.计及裂尖材料的有限变形,细致的有限元分析结出了小范围屈服条件下两种典型的损伤区形貌.

 
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