The closed boundary condition at the fracture tip is more rational after transformation.
变换后假设的缝端封闭边界条件更符合实际。
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)：断裂力学中使用的一个因子，说明裂纹尖端处的应力强度。
A boundary 's equation of microcrack region near crack tip of such brittle materials as concrete has been obtained according to the Griffith' s criterion and fracture mechanics.
利用格利菲思强度准则和断裂力学原理求得了混凝土类脆性材料裂缝端部微裂缝区的边界方程。
Pure elastic fracture is always rare, so th at under the action of stress, a plastic zone(large or small), and interactions between crack and dislocations always exist at the crack tip.
纯弹性断裂总是极少的，因之在加载应力作用下，裂纹顶端总是存在着或大或小的塑性区，存在着裂纹与位错的交互作用。
By comparing fatigue crack with electrosparking crack, the effects of crack tip on fracture toughness of ductile iron have been studied.
通过开疲劳裂纹和线切割裂纹的对比试验，研究裂纹尖端的尖锐程度对球墨铸铁断裂韧性的影响；
A new idea that the distribution movement of electric charge in the crack tip end being associated with rock fracture propagation produces electromagnetic emission was brought up.
本文提出了岩石破裂时的电磁辐射是裂纹尖端电荷随着裂纹加速扩展运动所产生的假说。
The research methods and main conclusions of FGMS fracture analysis are reviewed from the aspects of asymptotic fields near the crack tip and crack expansibility.
从裂纹尖端应力场和裂纹扩展两个方面，阐述了功能梯度材料弹性断裂分析的研究方法和主要结论。
There is a fracture process zone near the crack tip for the tensile strain softening materials.
在应变软化材料的主裂缝尖端存在一断裂过渡区。
A new idea that the distribution movement of electric charge in the cr ack tip end being associated with concrete fracture propagation produce electromagnetic emission is brought up.
对混凝土断裂时的电磁发射现象进行了理论研究，研究表明：混凝土断裂电磁发射是由于裂纹尖端电荷随着裂纹的加速扩展运动而产生。
The actual separation of the metal starts as a yielding or fracture, depending upon the cutting conditions, starting from the cutting tool tip.
金属的实际分离始于屈服或断裂(视切削条件而定)，从切削刀尖开始。
In the fracture study of softening materials, the damage area of crack tip is regarded as a piece of nonlinear crack with cohesive force.
在混凝土类软化材料断裂研究中，裂纹端部损伤区被简化为具有黏聚应力分布的非线性裂纹，该黏聚力对裂纹扩展有阻抗作用。
In the case of sub-brittle fracture, at the crack tip there is a small plastic region of which effect should not be neglected.
在准脆性断裂情况下，裂纹顶端存在一个不能忽略其影响的小范围塑性区。
The exact solution of linear elastic fracture mechanics is suggested in this paper and the plastic zone of crack tip is calculated under the condition of strain-hardening of material.
本文从线弹性断裂力学的精确解出发，在考虑材料强化影响的情况下，计算出裂纹前缘的塑性区。
This paper presents a result of researching the microcracking zone near the notch tip of rock specimen in compression shear fracture.
本文介绍了岩石压剪断裂试件切口端部微裂区的研究成果。
Based on the latest research fruits, methods and main conclusions of FGMS fracture analysis are reviewed from the aspects of asymptotic fields near the crack-tip and crack expansibility.
结合最新研究成果，从裂纹尖端应力场和裂纹扩展两个方面，阐述了功能梯度材料弹性断裂分析的研究方法和主要结论。
The damage and fracture criterions and the damage localization models at the crack tip are individually established, which can better realize the true process...
建立了这两个区域的损伤断裂准则和裂纹尖端的损伤局部化模型，可以更好地反映爆生气体作用下裂纹扩展的实际过程。
There were no significant differences in fracture alignment, hip screw position, tip-apex distance, union rate, time to healing or complication rate.
在骨折对线，螺钉位置，尖顶距，愈合率，愈合时间和并发症发生率方面无显著差异。
Local cleavage fracture might happen in the front of crack tip.
裂尖前方可能发生形变孪晶，裂纹沿孪晶界扩展。
A subtle sign of instability is a fracture of the tip of the transverse process of L5, caused by avulsion of the iliolumbar ligament.
不稳定骨折的一项敏感指征是L5横突尖骨折，由髂腰韧带撕裂伤引起。
For researching crack initiation condition and water injection pressure needed, this paper built up a mechanics model of crack tip based on crisp fracture theory of compound crack.
为研究初始裂缝尖端起裂的条件和所需注水压力，依据断裂力学的复合型裂纹的脆性断裂理论，建立了裂缝尖端力学模型，给出了计算方法。
It was observed that there was a direct connection between the fractographs, the fracture path and the crack tip crazes or microcracks in rib region.
发现断面形态、裂纹路径以及肋状区裂端簇射状银纹群之间有直接联系。每一肋条由一细砂带和一粗破带构成。
Existence of the FPZ (Fracture Process Zone) ahead of crack tip is proposed as the reason for underestimating interface toughness.
裂纹尖端前的断裂作用区域的存在被认为是以上方法估计不足的原因。
The fracture behavior at crack tip within CMn steel is analyzed based on the experiments of 3 PB precracked specimens and FEM calculation and simulation.
并结合有限元计算所得的不同预应变条件下的缺口前端的应力应变场分布，主要分析了预应变对不同组织低合金高强钢缺口试样断裂行为的影响。
The fracture behavior at crack tip within CMn steel is analyzed based on the experiments of 3 PB precracked specimens and FEM calculation and simulation.
并结合有限元计算所得的不同预应变条件下的缺口前端的应力应变场分布，主要分析了预应变对不同组织低合金高强钢缺口试样断裂行为的影响。
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