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裂隙损伤
相关语句
  crack damage
     Experimental study on the effect of the crack damage on ultrasonic wave attenuation in rocks
     岩石中裂隙损伤对超声波衰减影响的实验研究
短句来源
     Based on the analysis of the ultrasonic wave attenuation of crack damage in rocks,the connection of damage parameter D with attenuation coefficient a has been formulated. The crack set has been formed,by which the distribution character of flaw length and quantity can be expressed.
     在分析岩石裂隙损伤声衰减基础上,形成了损伤参量D与衰减系数α的关系式,建立了表达缺陷尺度与数量分布特征的裂隙集合。
短句来源
     The results have shown that tile multiply law of crack damage in rock can be reflected from the linear slope of quality factor decrement ΔQ_p changing with the stress ratio<σ>.
     结果表明,品质因数下降量AQ_p随应力比率<σ>变化的线性斜率tga_1,能够用来反映岩石裂隙损伤繁衍的规律。
短句来源
     A crack damage variable based on the CT data was defined and its relationship with the accumulated drying volume change of soil was analyzed.
     定义了基于CT数据的裂隙损伤变量,分析了裂隙损伤变量随累计干缩体变的变化规律。
短句来源
  “裂隙损伤”译为未确定词的双语例句
     THE UNDERLYING RELATIONSHIP BETWEEN NONLINEAR RHEOLOGICAL PROPERTY OF FISSURED ROCKS AND DAMAGE DEVELOPMENT
     裂隙岩体非线性流变性态与裂隙损伤扩展过程关系研究
短句来源
     Boundary Element Method and Program of Joint Fissure Damage in Rock Mass Mechanics
     岩体力学中节理裂隙损伤边界元方法与程序
短句来源
     This paper has do some research in-depth about the application of boundary element method in joint fissure damage rock mass on the basis of formers' work, several boundary element programs which apply in different kind rock mass are empoldered.
     本文在前人工作的基础上,对边界元法在节理裂隙损伤岩体中的应用做了比较深入的研究。
短句来源
     By using comprehensively the cracking mechanics and damage theory, the structural relation of fractured rock mass under the complicated stress state and the rule of crack starting of Compresso shear shear fractures are probed into, the damage evolution equations of fractured rock mass under compresso shear and tenso shear conditions are established, and the relation between seepage tensor and the development of fracture and damage, and the coupled model of unsteady state seepage field and damage field in fractured rock mass are put forward.
     综合应用断裂力学与损伤理论,探讨了复杂应力状态下裂隙岩体的本构关系以及压剪裂纹的起裂准则,建立了裂隙岩体在压剪、拉剪应力状态下损伤演化方程,提出了渗透张量随裂隙损伤发展的关系以及裂隙岩体非稳态渗流场与损伤场耦合模型。
短句来源
     in this paper,the underlying relationship between nonlinear rheological property of fissured rocks and damage development is studied.
     本文研究了裂隙岩体非线性流变性态与裂隙损伤扩展过程的相互关系。
短句来源
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  相似匹配句对
     Damage and Cracks Propagation in Brittle Rock
     脆性岩石的损伤裂隙扩展
短句来源
     THE VOIDING DAMAGE INDUCED IN MATERIAL EMBEDDING FLAWS
     含裂隙材料的空洞化损伤
短句来源
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短句来源
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短句来源
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短句来源
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  crack damage
A significant aspect of the theory is the introduction of a crack damage state variable which quantifies submicroscopic crack damage prior to macroscopic failure of the material.
      
A first order differential equation governing the time evolution of the crack damage variable is developed based on first principles of statistical physics.
      
We have used the complex electrical data to produce a direction-sensitive (anisotropic) crack damage parameter, and used it to calculate the effective Young's modulus by employing the models of Walsh and Bruner.
      
This modelling is an improvement on similar curves produced using isotropic crack damage parameters derived from acoustic emission data.
      
Hypothesis tests are builtupon the (conditional) probability density function of crack damage that does not requirethe solution of stochastic differential equations in either Wiener integral or It? integralsettings.
      
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In recent years, concept of continuous damage mechanics was applied to investigation of failure and fracture of rock and the like materials. A model was set up to simulate strain-softening effect of rock, in which rock was regarded as a damageable material with inherent micro-fissures. First of all, a thermo-dynamic formula and a model of finite deformation of rock were established in co-moving coordinates. Then a rock damage evolutional equation was proposed by the authors based on theory of fuzzy probability...

In recent years, concept of continuous damage mechanics was applied to investigation of failure and fracture of rock and the like materials. A model was set up to simulate strain-softening effect of rock, in which rock was regarded as a damageable material with inherent micro-fissures. First of all, a thermo-dynamic formula and a model of finite deformation of rock were established in co-moving coordinates. Then a rock damage evolutional equation was proposed by the authors based on theory of fuzzy probability measurement,and on micro-analysis and macro-observations. Finally, it was proved by the data obtained from labs that simulation of strain-softening effect of rock by a model is acceptable.

最近几年来,连续损伤力学的观点已开始被应用于岩石类材料的破坏断裂的研究。本文将岩石视为具有内在微细裂隙的损伤材料,来模拟其应变软化效应。首先,在拖带坐标系中建立了损伤热力学公式和有限变形损伤模型。并从微观分析到宏观现象,由模糊概率测度思想提出了岩石损伤累积方程。最后,由实验数据证明:本文的损伤模型对岩石应变软化效应的模拟是合理的。

To deal with the seepage in jointed rock masses, a coupled mechanical-hydraulic analysis model is developed in this paper. According to this model, the jointed rock mass, to be treated as an anisotropic, porous damaged medium with the corresponding elastic compliance and permeability tensors, is hydraulically equivalent to the discontinuous mass. The mechanical behaviours of the medium are described by a fracture damage model, while the hydraulic equivalents are formulated on the assumption that joints in rock...

To deal with the seepage in jointed rock masses, a coupled mechanical-hydraulic analysis model is developed in this paper. According to this model, the jointed rock mass, to be treated as an anisotropic, porous damaged medium with the corresponding elastic compliance and permeability tensors, is hydraulically equivalent to the discontinuous mass. The mechanical behaviours of the medium are described by a fracture damage model, while the hydraulic equivalents are formulated on the assumption that joints in rock masses can be reproduced by a set of parallel planar plates. To estimate the interconnection between joints, a series of stochastic crack networks are established by computers with Monte Carlo technique on the basis of in-situ observation and statistical procedures to characterize joint orientation. The effect of seepage on mechanical behaviour of joint et rock mass and the effect of stress states in rock masses on its conductivity are discussed in detail. According to the processes of joint crack propagation under different stress states in rock masses, a set of evolution rules governing the permeability tensor variation are established. Finally, a numerical analysis FE-program with the coupled model proposed above is developed and applied to the rock engineering.

本文对裂隙岩体中的渗流提出一种渗流-损伤耦合分析模型,这个模型将岩体中的裂隙模拟为具有一定张开度的扁平圆盘裂纹,由现场裂隙统计分析和计算机Monte Carlo法产生随机裂隙网络系统,计算裂隙的空间连通率,对其力学行为,运用损伤断裂力学模型予以描述。本文阐述了渗流对裂隙岩体的力学作用和岩体的应力状态对裂隙渗透特性的影响,根据不同应力状态下,裂隙的损伤断裂扩展过程建立起渗透张量的演化方程。最后提出了有限元分析程序并将其应用于工程实践。

An elasto-plastic damage fratcure model for bedded and jointed rock masses is studied in this paper. The damage tensors are defined

本文研究了层状裂隙岩体的弹塑性损伤断裂模型。文中按岩体等效柔度张量定义损伤张量,并对层状裂隙岩质高边坡的变形破坏过程建立了损伤演化方程,提出了包含软弱薄层塑性滑移与裂隙损伤扩展耦合性态的本构关系。最后将其应用于某水电站左坝肩高边坡开挖形成过程的稳定性分析中。

 
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