With this method, the precise elastic_plastic solutions near crack lines for variety of crack problems can be obtained.
裂纹线场分析方法目前已发展成为裂纹弹塑性分析的一种独立方法 ,这一方法极大地简化了裂纹弹塑性问题的复杂性和数学上的困难 ,可求出各型裂纹的弹塑性场在裂纹线附近足够精确的解答· 但是 ,以前采用这一方法求解时 ,均是针对一些具体问题进行的 ,没有给出裂纹线附近弹塑性分析的一般步骤和匹配方程的一般形式· 该文针对理想弹塑性Ⅰ型平面应力裂纹问题 ,按线场分析方法 ,给出了裂纹线附近弹塑性分析一般步骤 ,并针对一具体问题 ,给出了求解的过程和结果
Triangle crack,linearity crack and slag eye are main form of surface wrapped slag in continuously cast billet.
三角口裂纹、直线裂纹和渣孔是连铸坯表面夹渣的主要表现形式。
By means of the complex variable function method and introducing the conformal transformation,the anti-plane shear problem about two semi-infinite collinear cracks in one-dimensional hexagonal quasicrystals was investigated and the exact solution to mode Ⅲ SIFs was found out.
利用复变方法,通过引入适当的保角映射,研究了一维六方准晶狭长体中双半无限共线裂纹的反平面剪切问题,给出了Ⅲ型裂纹问题的应力强度因子的精确解。
The anti-plane problem for a functionally gradient magneto-electro-elastic strip containing multiple collinear cracks perpendicular to the boundary is investigated.
该板具有多个垂直于边界的共线裂纹。
Atfirst,stress and displacement at the end of collinear crucks are calculated by elasticity me-chanical method,then general solution of twist force at the end of collinear cracks is givenby rotation theory,single crack and double cracks are discussed emphatically.
本文计算并讨论了忽视旋转的传统理论所不能给出的裂纹端部场与场源的相互作用，首先利用弹性力学方法计算了共线裂纹组端部的应力场及位移场，然后应用旋转理论给出共线裂纹组端部的扭转力通解，对单裂纹和双裂纹情形做了重点讨论。
A new algorithm is proposed, through Fourier transformation projection theory using frequency-domain analysis, to detect local linear cracks on the freeway surface.
利用频域中傅里叶变换投影定理,提出一种新的离散脊波实现算法,应用于高速公路局部线性裂纹的检测取得较好效果。
A new kernel anisotropic diffusion noise removal algorithm is proposed, through anisotropic diffusion and kernel method, to denoise linear crack on the light rail beam surface, and preferable results are obtained.
利用各向异性扩散和核方法,提出了一种新的核各向异性扩散去噪算法,应用于跨座式单轨轨道梁面线性裂纹的去噪取得了较好效果。
Research of healing method of the broken lines in fingerprint image;
指纹图像因设备、图像增强处理等原因造成的纹线断裂会产生伪特征点,会对指纹识别产生负面影响。
The torsion fracture problem of bars with curvilinear cracks is investigated.
研究了带曲线裂纹柱体的扭转断裂问题,推导出了可以直接应用于任意形状截面含有任意形状曲线裂纹的柱体扭转问题的新的边界积分方程,并建立了带裂纹柱体扭转问题的边界元数值计算方法,提出了裂纹尖端的奇异元和线性元插值模型,给出了抗扭刚度和应力强度因子的边界元计算公式。
The Saint-Venant torsion problems of a composite cylinder with curvilinear cracks were in- vestigated.
研究含任意曲线裂纹的复合圆柱体的Saint-Venant扭转,将内外材料的交界面视为一边界,将问题划归为内、外边界和裂纹上的积分方程的求解。
There have been many studies about the torsion problem of an isotropic bar with cracks, but most of them are available only to the special section geometry with special curvilinear cracks.
国内外已有不少对于各向同性材料带裂纹柱体扭转的研究,但是仅限于特定截面几何形状和特殊曲线裂纹的问题。
Near Crack Line Plastoehstic Andysis of mode ⅢEdge Cracked Plates LoadedbyPoint Forces
Ⅲ型边裂纹受一对集中力时裂纹线场的弹塑性分析
The landslip instability mechanism analysis based on fault line field analytic method
基于裂纹线场分析法的滑坡失稳机理分析
Resarch on crack preventing on-line in 40GrNiMo specimen with edge crack and its microstructure analysis
40GrNiMo试件单边裂纹在线止裂及组织分析
The smaller the curvature and the larger the crack length the smaller will be the fracture stress.
曲线半径越小，裂纹长度越大，断裂应力也就越低。
The analysis of cracking in steel bridges can usually be accomplished by using linearelastic fracture mechanics.
通常可用线弹性断裂力学进行钢桥裂纹分析。
Research on Creep Crack Growth of Nonlinear Viscoelastic Body;
非线性粘弹性体裂纹扩展速度的研究
A Modeling Method for Crack Growth Curve
裂纹扩展曲线建模方法及其影响研究
CAUSE ANALYSIS OF THE CRACK ON THE FLANGE FOR MEDIUM TEMPERATURE SHIFT COOLING SYSTEM
中变空冷入口管线法兰裂纹原因分析
Research on Reinforcement of Nozzle with Penetrated Crack at Intersecting Line
相贯线处含穿透裂纹接管的补强研究
Fatigue life prediction of crack-like flaws in oil gas pipeline
油气管线裂纹型缺陷的疲劳寿命预测
Welding Thermal Crack Simulation Study on X70 Grade Pipeline Steel
X70级管线钢焊接热裂纹模拟研究
3-D FRACTURE MECHANICS CHARACTERISTICS AND CRITERION FOR PIPELINE STEEL WITH SURFACE CRACK
管线钢表面裂纹体的三维断裂特性和断裂判据研究
The problem of an elastic plane having symmetric parabolic crack is discussed.
研究含轴对称抛物线曲裂纹平面弹性问题.
Analysis of Crack on the Pipeline of ARDS Reactor and Safety Measure
加氢装置反应器管线裂纹分析及安全对策
The Interaction of Circular Cavity, Inclusion with Beeline Cracks by SH-wave;
SH波作用下孔洞、夹杂与直线形裂纹的相互作用
Eddy Current Testing Application in Railway Catenary s Defect;
涡流探伤在铁路接触线裂纹检测中的应用
Study of the Online Automatic Non-destructive Detecting System of the Cracks in Track Wheels;
火车轮裂纹自动在线无损检测系统研究
Experimental Research and Theoretical Model of Nonlinear Viscoelastic Crack Growth;
非线性粘弹性裂纹扩展的实验研究与计算模型