Then, the relationship of the fracture velocity in rapid crack with the rock crack mode and energy consumption is analyzed by the phenomenology method.
利用现象学方法分析了高速断裂中裂纹速度效应与岩石断裂模式和断裂耗能的关系。
To extract the gear crack fault weak feature of locomotive running gear box on complex background, a new method of ensemble empirical mode decomposition (EEMD) and 1.
针对复杂背景下机车走行部齿轮箱齿轮裂纹故障微弱特征的提取问题，提出了总体平均经验模式分解(EEMD)与1。
The static load test was done on the frame beam strengthened by CFRP with frame joint anchored in different mode, and the bearing capacity, deflection and width of crack was surveyed.
对采用不同梁端锚固方式的碳纤维布加固框架梁进行静载试验研究，在承载力、挠度及裂缝开展等方面进行了综合比较和分析。
This paper advanced a study method that can observe plastic deformation behavior of surface layer of die cavity by showing austenite grain, size, crack morphology and propagation mode.
提出了通过显示奥氏体实际晶粒度、裂纹形貌和扩展方式来分析热锻模具型腔表层塑性变形行为的试验方法。
According to the mode of crack propagation the mechanism of crack initiation and propagation was also discussed.
根据裂纹扩展方式的变化，对氢致裂纹萌生和扩展机制进行了讨论。
The results show that the fracture mode of blade is vibration fatigue and the main cause of initiation of fatigue crack is the mismatch between rabbet and tongue-and-groove.
结果表明，叶片的断裂模式为振动疲劳，叶片榫头与榫槽配合不当是萌生疲劳裂纹的主要原因。
In this paper, fracture mechanism, position and direction of crack initiation of mixed mode fracture in several ductile materials are tested, and stress distributions of which are analyzed.
应用传统强度理论和细观力学方法对几种韧性材料在复合载荷条件下的断裂机理、启裂位置、开裂方向进行了实验分析和应力场计算。
The elastic interaction between a screw dislocation dipole and a mode III interface crack is investigated.
研究了多晶体材料中螺型位错偶极子和界面裂纹的弹性干涉作用。
First of all, the study on the crack tip stress field under the model anchored by CFRP have been done, and then do a brief introduction about the failure mode of the model with the CFRP.
首先，对两端加锚后裂纹尖端的应力场做了一些相应研究，对两端加锚的模型破坏模式做了简短的介绍，为以后的工作提出了建议。
In order to discern position of crack accurately and improve precision discerned, method to discern crack has been proposed adopting the change of mode frequency.
为了准确识别裂纹的位置和提高识别的精度，提出了采用模态频率的变化来识别裂纹的方法。
An expression of energy difference rate in a plate of non-uniform thickness with a crack of mixed mode under both body force and surface tractions in a non-uniform temperature field is derived.
本文推导出了含复合型裂纹的变厚度板在承受体力和面力、存在非均匀温度场的情况下的能量差率表达式。
The numerical results show that the stress triaxiality varies with the mis matching mode and crack geometry of welded joints.
结果表明焊接接头裂端应力三轴性随焊缝和母材匹配性质及裂纹几何不同而变化。
This paper presents a numerical extrapolated method for calculating the effect stress intensity factor of 2-d Mode I crack.
文章介绍了传统的用裂尖塑性修正求解平面I型裂纹等效应力强度因子的方法。
In this article, the fracture analysis on mode I crack of orthotropic functionally gradient materials is studied, under which the elastic constants changed exponentially along thickness of the plate.
文章对含i型裂纹的正交各向异性功能梯度材料板沿其板厚的弹性常数表达式呈指数函数变化时的应力-应变场进行分析。
It is shown that the zigzag grain boundary may delay the initiation, growth and propagation of crack, as well as may also influence the crack morphology and the fracture mode markedly.
研究表明，弯曲晶界对裂纹的萌生、长大及扩展，对裂纹的形态及断裂方式，都有显著的影响。
Then, by means of the energy balance relation, a new cohesive stress law of Mode I crack is obtained which is only concerned with the surface energy density within the cohesive zone.
然后，利用能量平衡关系，得到仅与表面能密度相关的I型裂纹内聚力新的本构方程。
Result show that the trace boron additive causes the changes in the mode of fatigue crack propagation and its route, so that crack growth rate of 40MnB is lowered.
结果表明，微量合金元素硼改变了裂纹扩展途径和扩展方式，从而降低了疲劳裂纹扩展速率。
The current domestic and abroad research status is discussed firstly, and the guided wave mode and exciting method used in pipeline crack detection is determined by disperse curve and wave structure.
首先，介绍了管道导波检测技术国内外的研究现状，然后利用频散曲线和波结构确定了管道裂纹检测所用的导波模态及激励方式。
The results show that the crack initiates at the outer surface of the weld comer and propagates into the steel base material with a high cycle fatigue mode.
钎焊焊缝的枝晶间显微疏松导致的应力集中与微裂纹效应以及近焊缝区母材晶粒长大是导管早期疲劳开裂的主要原因。
During the analysis of the crankshaft with a crack, the vibration mode analysis of crankshaft which includes singularity and with flywheel and pulley has been made in this paper.
为了研究曲轴出现裂纹时的情况，本文对整体曲轴进行了振动模态分析，分析了带皮带轮和飞轮的曲轴和单独曲轴两种情况。
Heat treatment process has no effect on the propagation mode of thermal fatigue crack and the shape of crack at the sample notch.
热处理工艺对裂纹在试样缺口处的形态及裂纹的传播方式无影响。
In this mode, there is no wrinkle and crack in drawing parts, the thickness distribution is even and the overall forming quality is better, which meet the design and use requirements.
在该加载模式下，拉深件无起皱和拉裂缺陷，零件区域厚度分布均匀，整体成形质量较好，满足设计和使用要求。
The problem of dynamic initiation for crack-containing plate of I-mode under low-velocity impact load is investigated in this paper.
研究了含裂纹板在低速率冲击载荷作用下的互型动态起裂问题。
The energy release rate and failure criterion for mixed mode are investigated by means of the method of equivalent linear crack extension.
利用当量直线裂纹扩展法研究复合型裂纹的能量释放率及相应的断裂判据。
Axially symmetric longitudinal mode guided waves are more sensitive to the circumferential crack defects, which is basically consistent with the theoretical analysis.
轴对称的纵向模态导波对于周向裂纹缺陷较为敏感，这与模拟结果比较接近。
Mesoscopic damage size on the top of crack is analysed, the effective stress strength factor is defined, the mode I crack damage fracture criteria is presented.
以混凝土单轴拉压损伤为基础，给出了单元弹性损伤本构关系，分析了裂纹尖端损伤微裂区尺寸，定义了有效应力强度因子，给出了I型裂纹损伤断裂判据。
An element initial stress method to calculate stress intensity factor of three-dimensional mixed-mode crack is introduced.
对单元初始应力法应用于复合型三维裂纹问题进行了研究。
It is shown that the resisting crack capacity of member, shear strength, stiffness, load-bearing capacity and ductility of member can be improved and the failure mode of beam may be changed...
它能提高构件的抗裂能力、抗剪强度、刚度和承载力；还能提高构件的部分延性；并将改变梁的破？。
And then, substituting stress and displacement into basic formula of strain energy release rate, computing formula for strain energy release rate of mode III, mixed mode crack tips are direved.
其次将应力与位移代入应变能释放率的基本公式，推出了Ⅰ、Ⅱ混合型，Ⅲ型以及Ⅰ、Ⅱ、Ⅲ混合型裂纹尖端应变能释放率的具体计算公式。
And then, substituting stress and displacement into basic formula of strain energy release rate, computing formula for strain energy release rate of mode III, mixed mode crack tips are direved.
其次将应力与位移代入应变能释放率的基本公式，推出了Ⅰ、Ⅱ混合型，Ⅲ型以及Ⅰ、Ⅱ、Ⅲ混合型裂纹尖端应变能释放率的具体计算公式。
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