So, it is doubtful to directly use the J -integral as a fracture criterion in heterogeneous welded joints.
因此，在非均质焊接接头中直接应用J积分作为断裂判据不合适。
The J-integral fracture criterion based on HRR theory has been widely used in the studies of elastic-plastic fracture of materials.
在弹塑性断裂研究中广泛地采用着J积分断裂判据，这种判据的基础是HRR理论。近些年来，一些研究者基于数值分析和试验研究对HRR理论的适用性进行了讨论。
The application of the maximum tensile criterion to V-notch and the size effect of the fracture criterion of mixed mode are also discussed.
讨论了最大拉应力理论在V形切口中的应用问题；并探讨了复合型断裂准则的尺寸效应。
To accurately predict the forming limit in aluminum alloy sheet forming, ductile fracture criterion is introduced into numerical simulation.
为了准确地预测铝合金板材成形极限，将韧性断裂准则引入到数值模拟中。
Using the ductile fracture criterion as the reference for judging the limit height of the process to put the necessary simulation results into the criterion.
并利用韧性断裂准则作为胀形高度极限的判断依据，将模拟得到的必要数据代入到准则中。
This article establishes a fracture criterion of crack type I under quasi-state conditions and brings forward a new concept and an expression of surface energy.
本文建立了准静态情况下I型裂纹的断裂准则，提出了新的表面能概念及其表达式。
The findings indicate that the brittle fracture criterion for V-notches with single singularity is valid and simple, so it can be applied to engineering conveniently.
结果表明所给出的单奇异性V形切口的脆性断裂准则有效、简单且便于工程应用。
For the strip mill roll which has complex structure, stress and crack, based on the stress intensity factor to fracture criterion is an effective way to judge fracture.
对于结构、受力及裂纹形态比较复杂的板带轧机轧辊，采用基于应力强度因子的判据是判断断裂的有效方法。
As an example, the results for mild steel indicate that the complete-fracture criterion derived in this article could be better to explain the experimental results given by and Chen et al.
以软钢为算例，本断裂判据可以比较好地解释和陈大年等给出的实验结果。
They are mainly concerned with the tensile and compressive behavior, energy absorption, dynamic impact, failure criterion and constitutive relation, creep, fatigue and fracture of these materials.
这些工作主要讨论了金属泡沫材料的拉伸、压缩、能量吸收、动态冲击、失效准则、本构关系、蠕变、疲劳和断裂等力学性能。
When analyze the fracture mechanics problems, the K criterion is widely used.
用断裂力学分析问题时，广泛应用的是K判据。
The interfacial fracture toughness is effectively evaluated based on the finite element results and the energy-based deflection criterion.
基于有限元结果和能量偏移准则，有效地评估了界面断裂韧性。
Coulomb's criterion of shear fracture is used to determine whether these stress components will trigger the earthquakes or not.
根据岩石的库仑剪破裂准则来判断潮汐应力对所研究的震例是否具有触发作用。
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。
This provides a certain theory and criterion for us to further research the fracture-resistant capability of welded joint .
这为进一步研究焊接接头的抗断性能分析提供了一定的理论基础。
The cleavage fracture of the notched specimens with various sizes and widths is mainly controlled by the criterion of normal stress.
不同尺寸和宽度的缺口试样的解理断裂主要由正应力判据控制。
Based on the principle of fracture mechanics, the stop criterion of brittle fracture is proposed and the equation of minimal crack stop is given.
根据断裂力学的原理，提出了脆性破裂的止裂准则，给出了最小止裂方程。
But the damage and fracture of rock is closely related to each other. And the relationship between strength criterion parameters of rock and fracture toughness of fracture theory is particular.
然而，岩石的破坏和断裂是紧密相联的，岩石强度准则的材料参数和断裂理论的断裂韧度存在特定的方程关系。
The crack size is crucial for structure fatigue design, fracture mechanics analysis, judgment criterion of fracture and fracture control.
裂纹几何尺寸是在结构的抗疲劳设计、疲劳断裂力学分析、断裂判据和疲劳断裂控制中非常重要的依据。
The application of the criterion of initial cracking or that of fracture has different effects on the findings in the implant test for cold cracking.
插销法冷裂缝试验中，应用“开裂”准则还是“断裂”准则，所得到的试验结果是有差异的。
The fracture distribution of this area was predicted effectively combined with rock failure criterion.
然后结合岩石破裂准则，对该区域的裂缝分布做出了有效的预测。
The horizontal well stress distribution and the rock failure criterion constitute a fracture initiation mathematical model, which was solved by the iteration method.
水平井井筒应力分布和岩石破坏准则构成了水平井压裂裂缝起裂数学模型，利用迭代法对模型进行了求解。
In this paper, the criteria of mixed mode brittle fracture are carefully examined. It has been shown that, the circumferential strain factor criterion is rational and safe.
本文讨论了线弹性断裂力学的复合型断裂准则。推荐了周向应变因子准则。
The dynamic character of gravity fracture surface sliding is considered and the stiffness criterion of fracture surface sliding is proposed.
研究了地质断裂面滑移的动力学行为，获得了断裂面滑移失稳的刚度准则。
On the basis of the fracture model and the deep drawing deformation force. The fracture limit prediction and control criterion is calculated.
根据破裂模型和拉深变形力，导出了破裂极限预报与控制判据。
Objective: To explore the effective treatment way of orbital zygomatic fracture with diplopia, reduce orbital capacity and regenerate referenced criterion of orbital capacity.
目的：探讨眶颧骨折继发复视等畸形的有效治疗手段，缩小眶腔的有效方法，重建眶腔的参考标准。
According to diffuse instability criterion, worked out the principle of verdicting the case of base fracture or side fracture and formulae of fracture limit BHF;
按照分散性失稳准则，推导出产生壁裂和底裂的判别条件和方盒形件成形过程中的极限压边力公式；
According to diffuse instability criterion, worked out the principle of verdicting the case of base fracture or side fracture and formulae of fracture limit BHF;
按照分散性失稳准则，推导出产生壁裂和底裂的判别条件和方盒形件成形过程中的极限压边力公式；
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