The P wave is inversely proportional to crack density.
波速度与裂隙密度成反比关系。
The deformation moduli increase with increment of crack friction coefficient and decrease with increment of crack density parameter.
随着裂隙摩擦系数的增加，变形模量有逐渐增加的趋势。
For the deformation of fractured rock mass, crack density parameter and crack friction coefficient are the most important parameters.
随着裂隙密度参数的增加，变形模量有减小的趋势；随着裂隙摩擦系数的增加，变形模量有逐渐增加的趋势。
The crack distribution and evolution of the surrounding rocks of roadway can be quantitatively depicted by the fractal dimension of crack density.
用裂隙密度分形维数定量描述了巷道围岩裂隙的分布和演化。
The oxidation degree of grain boundaries and crack propagation are qualitatively analyzed based on crack density and percentage of intergranular crack.
用裂纹密度和晶界裂纹的比例对晶界氧化的程度及裂纹扩展情况定性地加以分析。
It exhibits the viscous effect under dynamic loading case, and the effect strengthens with the growth of the micro-crack density induced by the meso-damage of material.
饱和混凝土中孔隙自由水的存在对材料的力学性能有显著的影响，动态工况中主要表现为自由水的粘性效应，且该效应随细观损伤引起的微裂纹密度的改变而变化。
In case of low crack density (less than 6%), the relationship between crack densities and velocities of the fast and slow shear waves agrees well with theoretical prediction.
在低裂缝密度(小于6 %)时，裂缝密度和横波快慢波速度的关系与理论预测相符。
The magnetic flux density on the crack tip in a metal pipeline was studied by numerical simulation method.
用数值模拟方法研究了金属管道裂纹尖端磁通量密度的分布情况。
The space crack arresting in metal die has been conducted on a new super-density pulse current generator model ZL-2 designed by author.
自主设计了改进型ZL - 2超强脉冲电流发生装置，采用它实现了金属模具试件中裂纹的电磁热止裂。
Numerical example indicates that the random distribution characteriztics can be different for different elastic constants under the same random distribution of crack number density.
裂纹数密度对随机裂纹介质的各个弹性常数具有不同程度的影响；
The size of current path, resistivity, power density are main factors that effect the temperature field and temperature gradient field at crack tip.
试件的通流尺寸、电阻率、导入电流密度是影响裂纹尖端温度场和温度梯度场的主要因素。
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。
Statistical analysis of density field was quantified at mesoscale level, including interior, adjacent region, path of propagation of the crack and towards both sides of crack.
细观统计结果表明，裂纹区域和邻近区域的密度要低于正常区域的密度，材料内部的疲劳损伤呈现不均匀性。
The specimen was scanned and reconstructed by means of Micro-CT, images of density field were obtained, and the 3D crack morphology was extracted.
采用微焦点CT对疲劳试样进行了扫描与重建，获得了密度场图像库，并提取了试样内部的三维裂纹形态。结果表明裂纹以体的形式存在。
Concerns BEM (boundary element method) of electric current concentrating effect and temperature rising analysis at the crack tip with high density electric pulse.
给出金属板在高密度电流脉冲下裂纹尖端电流集肤效应和急剧发热升温解析的边界元法。
The new criterion includes the integral features of the whole field, while the theory of minimum strain-energy-density factor considers only a single point in the crack tip field.
较之仅着眼于纹尖场某一点的最小应变能密度因子理论，新判据更多地顾及到了尖端场的全局。
The relation between stress-strain and density variation of rock crack has been obtained through the meso-damage theory and damage statistics model.
把细观损伤理论和宏观统计损伤模型结合，建立应力–应变与微裂纹密度变化的关系；
The results showed that the root reason for valve body failure was seriously casting defect exist and its big and density shrinkage porosity form the original crack;
结果得出：阀体失效的主要原因是阀体本身存在严重的铸造缺陷，铸造疏松严重、孔洞尺寸大乃于形成原始裂纹源；
A 2-d finite element model of tire-rubber was established to simulate the crack growth of the sample under simple tension, by using the strain energy density parameter.
建立了二维轮胎橡胶材料的有限元模型，用应变能密度这个参数模拟了试样承受单向拉伸时裂纹的扩展方向。
A 2-d finite element model of tire-rubber was established to simulate the crack growth of the sample under simple tension, by using the strain energy density parameter.
建立了二维轮胎橡胶材料的有限元模型，用应变能密度这个参数模拟了试样承受单向拉伸时裂纹的扩展方向。
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