断裂力学

断裂力学的应用，将直接引出无损检验技术的应用。

Applications in fracture mechanics lead directly to applications to the nondestructive testing of structures .

通常可用线弹性断裂力学进行钢桥裂纹分析。

The analysis of cracking in steel bridges can usually be accomplished by using linearelastic fracture mechanics .

焦散线法在断裂力学中的应用（应力强度因子K1的测定）

THE METHOD OF CAUSTICS APPLIED IN FRACTURE MECHANICS ( Determination of Stress Intensity Factor Ki )

然后用断裂力学方法汁算其轮齿弯曲疲劳寿命（N值）。

Hence the value of buckling fatigue life N of gear teeth should be estimated by the breaking mechanics method .

J积分与断裂力学数值方法

J - Integration and Numerical Method for Fracture Mechanicss

CFRP加固疲劳损伤钢结构的断裂力学分析

Fracture mechanics analysis of steel structures with fatigue damages strengthened by CFRP

NR胶料疲劳破坏寿命的断裂力学描述

Description of Fatigue Failure Life on Basis of Fracture Mechanics for NR Vulcanizates

J积分的三维理论及其在线性断裂力学中的初步应用

Three Dimensional Theory of J Integral and Its Preliminary Applications in Three Dimensional Problems of Linear Fracture Mechanics

和J积分是弹塑性断裂力学研究方法中的两个重要参数。

CTOD ( Crack Tip Opening Displacement ) and J-integral are two important parameters in elastic-plastic fracture mechanics .

介绍了疲劳断裂力学中的Paris公式，并将其运用于含反射裂缝的沥青混凝土路面的疲劳寿命预测。

The Paris law is used to predict the fatigue life of the AC pavement containing a reflective crack in the base .

并利用岩石断裂力学理论对此现象进行了解释，指出在岩体应力和水压力的作用下，岩体裂隙发生拉-张型扩展（KⅠ型）是裂隙渗透系数突然增大的关键原因。

The phenomenon is explained according to the fracture mechanism , which indicates the rock crevice stretches and spreads under the rock stress and hydraulic pressure .

PCD刀具加工强化复合地板中磨损行为的断裂力学研究

Fracture mechanics analysis on wear characteristics of polycrystalline diamond tools when machining high pressure laminated flooring

疲劳S-N曲线预测的三维断裂力学方法

Three-Dimensional Fracture Method for Predicting Fatigue S-N Curves

为了对非均质焊接接头进行弹塑性断裂力学分析，本文对EPRI方法进行了修正，得到了一定条件下中心裂纹模型的修正系数CJ，C（？）

A modification to the EPRI method is made and the modification coefficients C_J , C_ δ and Cv for the centre cracked panels are obtained .

简要概括了多孔介质的基本理论和断裂力学的基本理论，介绍了孔隙度、饱和度、有效应力、应力强度因子、能量释放率、J积分等基本概念。

Some basic concepts such as porosity , saturation , effective stress , stress intensity factor , energy release rate and J integral are introduced .

Hoek-Brown强度准则的断裂力学理论研究

Theoretical research of Hoek - Brown empirical strength criterion

指出利用断裂力学的有关公式计算震源应力场的初始剪切应力τo和地震释放的总能量ET在原理上是可行的，且方法简单；

That calculation of initial shearing stress (τ o ) of focal stress field and total seismic energy ( E T ) of formula of rupture mechanism is feasible in principle .

哈密顿体系在断裂力学Dugdale模型中的应用

Application of the Hamilton System to Dugdale Model in Fracture Mechanics

TiC-Ni系功能梯度材料的断裂力学有限元分析

Cracking problem analysis of TiC-Ni FGM using finite element method

以试验数据的检验证明，在0.4～4mm的尺寸范围内，选用的断裂力学模型是合理的；

The experiment data verify that the model is rational within the crack size range of 0.4mm ~ 4mm .

结合对抽油杆各特征部位半椭圆裂纹应力强度因子K的有限元计算，用断裂力学方法估算了各特征部位允许存在的裂纹尺寸。

According to the finite element calculation of the stress intensity factor of the semi-elliptical surface cracks on various characteristic parts of the sucker rod , the allowable size of cracks on these parts is estimated by the fracture mechanics method .

应用S-N曲线法和断裂力学方法分析了深水半潜式平台关键部位的疲劳可靠性。

Based on the S-N curve approach and the fracture mechanics approach , the fatigue reliability analyses on key parts of deepwater semi-submersible platform are investigated .

其次，分别给出了断裂力学强度CTOD、KIC以及裂纹扩展速率和裂纹尺寸的随机性与模糊性的描述方法。

Then the description methods of randomness and fuzziness of crack size , crack propagation rate and fracture mechanics strength are given .

利用Griffith准则和断裂力学原理讨论了带缺口的素混凝土和纤维薄板增强混凝土三点弯曲梁试件的断裂扩展问题。

With Griffith criterion and principle of fracture mechanics , a problem of the crack propagation of plain concrete and fiber sheet reinforced concrete 3-P bending specimen is discussed .

为了满足这个要求，国外近十几年来发展了一门被称为与时间有关的断裂力学（Time－DependentFractureMechanics，简称TDFM），它属于非线性断裂力学的一个分支。

To this effect , time dependent fracture mechanics ( in short TDFM ) has been developed in oversea countries , which belongs to the field of nonlinear fracture mechanics and constitute one of its branches .

应用断裂力学的基本原理，研究了表面裂纹前缘各点J积分随荷载与裂缝的不同位置、不同加载方式及路面结构参数的变化规律。

By making use of fracture mechanics fundamental , the effect of the pavement parameters and the relative locations of the load and crack as well as loading styles on J integral of the front points of surface crack are studied .

借助弹性力学理论、断裂力学知识及微积分方法，讨论各向异性功能梯度材料裂纹板在沿z轴方向剪切载荷作用下的反平面断裂问题。

From basic equations of elastic mechanics , related knowledge of fracture mechanics and frequently-used method of differential and integral calculus , the anti-plane fracture problems of cracked plate for anisotropic functionally graded materials under shear loads of z axis direction are discussed .

用线弹性断裂力学对连续介质中三维裂纹（K（Ⅲ）≠0）破裂的拉应力断裂准则提出了补充性假说和相应的计算方法（第一主微分面定点法）。

The normal stress criterion of three-dimensional brittle fracture ( Km ≠ 0 ) of continuum medium is further studied by using the theory of linear elastic fracture mechanics . Some complementary assumptions and the corresponding calculation method ( method of locating principal differential planes ) are proposed .

冷拉Si-Cr气阀钢的断裂力学分析

Fracture-mechanics analysis of cold-drawn Si-Cr valve steel

结合混凝土材料科学、断裂力学的相关研究理论，分析了混凝土孔隙对弹性模量和断裂表面能的影响，对Griffith断裂理论进行了修正，进而提出了混凝土孔结构复合体模型。

Analysis results of the influence of porosity on surface energy and elasticity modulus , and the fixed Griffith fracture theory were applied to set up the compound-body model of pore structure .