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field of mode
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  “field of mode”译为未确定词的双语例句
     Tip field of mode Ⅲ crack in nonlinear damage material
     非线性损伤材料中Ⅲ型裂纹尖端场
短句来源
     The Tip Field of Mode Ⅲ Crack in Nonlinear Damage Materials
     非线性损伤材料中Ⅲ型裂纹尖端场
短句来源
     Influence of Hydrogen on the Stress Condition of the Screw Dislocation at the Stress Field of Mode Ⅲ Crack Tip
     氢对Ⅲ型裂纹尖端应力场中螺位错受力的影响
短句来源
     The Crack Tip Field of Mode ⅡDynamic Growing Crack in Creeping Materials
     蠕变材料Ⅱ型动态扩展裂纹尖端场
短句来源
     Tip stress field of mode II crowing steadily crack
     II型动态扩展裂纹尖端应力场
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  field of mode
A mechanical model of visco-elastic material is established in order to investigate viscous effect in dynamic growing crack-tip field of mode II.
      
Asymptotic field of mode II dynamic growing crack in visco-elastic material
      
Figure 17 shows the horizontal velocity field of mode T1 at the 450-hPa level.
      


In this paper, a nonlocal theory of fracture for brittle materials has beenproposed. It contains the nonlocal elastic stress fields of mode-I, II, III Griffith cracks, the asymptotic forms of the stress fields at the neighborhood of the crack tips, and the maximum tensile stress criterion of brittle fracture. As an application of the theory, the fracture criteria of cracks of mode-I, II, III and mixed mode I-II, I-III are given in detail and compared with some experimental data and the...

In this paper, a nonlocal theory of fracture for brittle materials has beenproposed. It contains the nonlocal elastic stress fields of mode-I, II, III Griffith cracks, the asymptotic forms of the stress fields at the neighborhood of the crack tips, and the maximum tensile stress criterion of brittle fracture. As an application of the theory, the fracture criteria of cracks of mode-I, II, III and mixed mode I-II, I-III are given in detail and compared with some experimental data and the theoretical results of minimum factor of strain energy density.

本文提出一种脆性材料断裂的非局部力学理论,内容包括:Ⅰ、Ⅱ、Ⅲ型Griffith裂纹的非局部弹性应力场,裂纹尖端邻域非局部弹性应力场的渐近形式,脆性开裂的最大拉应力准则。文中给出了这种理论应用于三种基本型裂纹和Ⅰ-Ⅱ、Ⅰ-Ⅲ复合型裂纹临界开裂条件的计算结果,并把它们与一些试验资料和最小应变能密度因子理论进行了对比。

Adopting damage constitutive model elastoplastic field near a dynamic propagating crack-tip of mode Ⅲ in a strain-damaged material is investigated. Assuming that the medium obeys the J_2 flow theory, the damage rule is given asymptotically in the form of power-law strain softening. For anti-plane shear problem, the constitutive relation is derived.The asymptotic equations of the dynamic elastoplastic field are given for mode Ⅲ crack. It is shown that the stress and strain singularities are, respectively, of...

Adopting damage constitutive model elastoplastic field near a dynamic propagating crack-tip of mode Ⅲ in a strain-damaged material is investigated. Assuming that the medium obeys the J_2 flow theory, the damage rule is given asymptotically in the form of power-law strain softening. For anti-plane shear problem, the constitutive relation is derived.The asymptotic equations of the dynamic elastoplastic field are given for mode Ⅲ crack. It is shown that the stress and strain singularities are, respectively, of the order of lnR/r)~δ and (lnR/r)~(-nδ). Therefore the asymptotic behaviour near a dynamic propagating crack-tip field of mode Ⅲ in a strain-damaged material is revealed.

采用应变损伤模型,对应变损伤材料Ⅲ型动态扩展裂纹尖端的弹塑性场进行了研究。在假定材料服从J_2流动理论的前提下,应用应变弱化形式给出了近似损伤结果,推导了反平面剪切情况下的本构方程,并且给出了Ⅲ型动态扩展裂纹尖端场的渐近方程。分析结果表明,在裂纹尖端,应变具有(1n R/r)~δ奇异性,应力具有(1n R/r)~(-nδ)奇异性。从而揭示了应变损伤材料Ⅲ型动态扩展裂纹尖端场的渐近行为。

The near tip field of mode Ⅱ crack under plane strain condition growing statically in perfectly plastic material has been analyzed by using displacement potential and stress function as unknowns,the asymptotic equations are derived and the mathematical closed soluiton is obtained.Through the numerical calculation, the angles of each sector have been given.The whole crack tip field is divided into three sectors,i.e.unloading elastic region,constant stress region and fan region.It is found that the...

The near tip field of mode Ⅱ crack under plane strain condition growing statically in perfectly plastic material has been analyzed by using displacement potential and stress function as unknowns,the asymptotic equations are derived and the mathematical closed soluiton is obtained.Through the numerical calculation, the angles of each sector have been given.The whole crack tip field is divided into three sectors,i.e.unloading elastic region,constant stress region and fan region.It is found that the strain possesses the singularity of (ln( 1/r )) 2.The method used in this paper is valid for analysis of cracks in the power hardening material.

以位移势、应力函数为基本未知量,对理想塑性材料中准静态扩展的Ⅱ型平面应变裂纹进行了分析,推导了渐近方程,并求得数学封闭解,由数值计算得到了各分区的角度值。裂尖场分为三个区,即扇形区、弹性卸载区和均匀应力区,应变具有(ln(1/r))2的奇异性。此方法对分析幂硬化材料中的裂尖场同样适用

 
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