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损伤演化规律     
相关语句
  damage evolution law
     Simulation of Rock Shock Damage Evolution Law with Numerical Manifold Method
     岩石冲击损伤演化规律数值流形方法模拟
短句来源
     (1) Through the experimental study of red mud sand rock in Chongqing under the conditions of uniaxial and triaxial loading, the author analyzes the damage evolution law of the soft rock and the nonlinear fractal features of the crack expansion.
     (1) 通过重庆红色泥砂岩单向、三向受压状态下的实验研究,分析了软岩的损伤演化规律及裂纹扩展的非线性分形特征。
短句来源
     The linear Miner′s law and the high cycle fatigue damage evolution law are adopted for the full-coupled fatigue damage analysis of Qingma Bridge’s longitudinal trusses. The fatigue damage accumulation for the welds is calculated and the corresponding fatigue life is evaluated.
     分别以线性米勒准则和高周疲劳损伤演化方程为疲劳损伤演化规律,对青马大桥纵向加劲桁架整体节点进行疲劳损伤全耦合分析,计算构件焊缝处的疲劳损伤演化过程并预测其相应的寿命。
短句来源
     Based on the adoption of elasto-plastic damage theory and effective strain assumption, weld metal coupons were tested under repeated pull and their damage evolution law was determined.
     基于各向同性弹塑性损伤假定和应变等效假设,采用重复拉伸的试验方法,得到了焊缝金属的损伤演化规律.
短句来源
     Then, a new a. c. potentialsystem is used to measure the damage evolution law for the steel and its CGHAZ, and correspondingdamage evolution equations are proposed.
     然后用一种新的交流电住损伤测量系统,测得了该钢及其模拟粗晶区的韧性损伤演化规律,得出了相应的损伤演化方程。
短句来源
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  damage evolution rule
     Study of damage evolution rule in concrete with laser holographic interferometry
     激光全息干涉法研究混凝土的损伤演化规律
短句来源
     According to intrinsic variable theory and equivalent strain assumption,a damage constitutive equation in terms of real strain was established for concrete under uniaxial tension, while damage evolution rule was set up based upon the fact that the Weibull distribution could be used to describe the fracture process of brittle materials,such as concrete.
     本文根据内变量理论和等效应变假设建立了基于真实应变的混凝土单轴受力本构方程,并根据Weibull分布可以描述混凝土等脆性材料断裂过程的试验现象,建立了关于弹性应变的损伤演化规律
短句来源
  the damage evolution law
     (1) Through the experimental study of red mud sand rock in Chongqing under the conditions of uniaxial and triaxial loading, the author analyzes the damage evolution law of the soft rock and the nonlinear fractal features of the crack expansion.
     (1) 通过重庆红色泥砂岩单向、三向受压状态下的实验研究,分析了软岩的损伤演化规律及裂纹扩展的非线性分形特征。
短句来源
     Then, a new a. c. potentialsystem is used to measure the damage evolution law for the steel and its CGHAZ, and correspondingdamage evolution equations are proposed.
     然后用一种新的交流电住损伤测量系统,测得了该钢及其模拟粗晶区的韧性损伤演化规律,得出了相应的损伤演化方程。
短句来源
     In dynamic loads, the damage evolution law of concrete in compression differs from in tension; however, Loland model, which is based on research on damage evolution law in tension, can also simulate the damage evolution law well by introducing crack closing factor.
     动态荷载作用下,混凝土的拉、压损伤规律有所不同,通过引入裂纹闭合系数的Loland模型—基于受拉损伤规律研究而得到的损伤模型—也可以很好地模拟混凝土在受压状态下的损伤演化规律
短句来源
     In this paper,the damage evolution law of low cycle fatigue (LCF) of welded blisk is studied,to which the damage mechanics theory is applied. The LCF damage evolution model is built on the basis of strapin variable thermodynamics,the LCF damage characteristics and the coupled strain equivalence principle with damage.
     对航空发动机焊接式整体叶盘结构,用损伤力学理论研究焊接接头低周疲劳损伤演化规律,以带内变量的热力学为基础,根据低周疲劳损伤特性及耦合的应变等价原理,建立了焊接低周疲劳损伤演变模型。
短句来源
     An approach to predict the initiation and propagation of interlaminar damage(delamination)is brought forward based on the contact constraint introduced by the penalty function method: a scalar damage variable is introduced and the degradation of the interface stiffness is established and a damage surface which combines stress-based and fracture-mechanics-based failure criteria is set up to derive the damage evolution law.
     针对铺层板的脱层损伤,建立了各向同性脱层损伤模型,通过结合传统的应力失效准则和断裂力学中的能量释放率准则定义了界面损伤演化规律,并在潜在产生脱层的区域模拟为粘结接触,并将脱层损伤模型作为界面的接触行为。
短句来源
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  “损伤演化规律”译为未确定词的双语例句
     The results are analyzed with damage mechanics theory, the evolution laws of this material at the two temperatures are obtained, the comparisons are made with 30Cr2MoV steel at 550℃, and the feasibility of properties.
     应用损伤力学理论对实验结果进行分析,得到该材料在此温度下的损伤演化规律,并将试验结果和30Cr2MoV在550℃结果进行比较,从低周疲劳特性方面探讨30Cr1Mo1V用于超临界参数机组转子钢的可行性。
短句来源
     A new fatigue damage evolution equation was proposed according to the fatigue accumulative damage theory,the effectiveness of which was verified by experimental results.
     根据疲劳累积损伤理论,提出了新形式的疲劳损伤演化方程,与试验结果对比,该方程能较好地反映新材料的损伤演化规律.
短句来源
     The Evolution Rhythm of Surface Corrosion Damage of LY12-CZ Aluminum in Varied Environments
     不同环境下LY12-CZ铝合金表面腐蚀损伤演化规律研究
短句来源
     Although the strain damage threshold ε c is fixed,the stress damage threshold σs and initial modulus of elasticity E0 are exponential and linear decreased with the increasing of water content.
     对应力应变门槛值及损伤演化规律的分析和探讨认为:损伤的应变门槛值εc几乎不随着含水量的变化而变化,而损伤的应力门槛值σS及初始弹性模量E0则随着含水量的增加分别呈指数和线性减少;
短句来源
     STUDY ON DAMAGE EVOLUTION OF CONCRETE UNDER IMPACT LOAD
     冲击载荷下混凝土材料损伤演化规律的研究
短句来源
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  damage evolution law
The specimen failure mode, the three-stage evolution rule of the longitudinal strains and the damage evolution law under cyclic loading were analyzed.
      
A damage evolution law, which allows for the energy dissipation due to the new surface formation as well as the influence of local (thermic) fluctuations is obtained.
      
Kachanov-Rabotnov's damage evolution law was employed.
      
A deformation plasticity theory coupled with damage and a damage evolution law are formulated.
      
The damage evolution law which allows for the kinetic and microstructural properties of a material is obtained on the basis of the kinetic theory of strength.
      
更多          
  damage evolution rule
This model takes into consideration the scale effect and the effect of wet screen sieve of aggregate in which the concept of yield surface is not needed and the difference of damage evolution rule of various graded aggregate concrete is a concern.
      
  the damage evolution law
The specimen failure mode, the three-stage evolution rule of the longitudinal strains and the damage evolution law under cyclic loading were analyzed.
      
The damage evolution law which allows for the kinetic and microstructural properties of a material is obtained on the basis of the kinetic theory of strength.
      
According to the used modelling, the damage evolution law describes the fast initial homogeneous creation of the micro-cracks and then their slow development.
      


The relative demsity changes can phenomenologically reflect the ductile damage evolution during plastic deformation processes. In view of the above fact, the authors attempt to formulate a ductile damage model through precise measurement of the relative density changes in order to predict the ductile damage evolution and product quality for metal forming processes. However, the density changes during plastic deformation processes are very small. Therefore, the precise measurement of small density changes is...

The relative demsity changes can phenomenologically reflect the ductile damage evolution during plastic deformation processes. In view of the above fact, the authors attempt to formulate a ductile damage model through precise measurement of the relative density changes in order to predict the ductile damage evolution and product quality for metal forming processes. However, the density changes during plastic deformation processes are very small. Therefore, the precise measurement of small density changes is the key to carrying out the project mentioned above. In this paper, the method and equipment for measuring small changes in density are described in detail. The ductile damage evolution during tension and torsion process is studied by measurement of the relative density changes. The results of this study indicate that the precise measurement of small changes in density is a promising way for understanding of the ductile damage evolution during plastic deformation processes.

通过精密测量相对密度化建立韧性损伤模型,以预测金属塑性加工过程中韧性损伤演化规律和产品质量。本文研究了精密测量微小密度的变化、介绍了测量方法和装置。通过测量相对密度变化对拉伸和扭转过程中韧性损伤演化规律进行了研究。

Presently, damage mechanics has be used successfully in plastic failure and creep damage process , and some damage mechanics models have also been introduced into fatigue study. Effective stress is one of the most important concept in damage mechanics, application of the concept of effective stress lays a foundation for discribing the mechanical behavior of damaged material by the constitutive equation of non-damaged material. The present paper disscussed the definition of effective stress in damage mechanics...

Presently, damage mechanics has be used successfully in plastic failure and creep damage process , and some damage mechanics models have also been introduced into fatigue study. Effective stress is one of the most important concept in damage mechanics, application of the concept of effective stress lays a foundation for discribing the mechanical behavior of damaged material by the constitutive equation of non-damaged material. The present paper disscussed the definition of effective stress in damage mechanics and its physical meaning, and through analysis from the physical pattern of damage and its evolution law, proposed such a definition is not suitable for fatigue damage problem. The authors think that the effective stress should be based on equivalent life in fatigue problem, thereby defined the concept of effective stress in fatigue damage according to the concept of remainder life.

有效应力是损伤力学中的一个重要概念,这个概念的提出为用无损状态下的本构方程描述有损伤材料的行为提供了有效手段.本文探讨损伤力学中有效应力的定义,通过对损伤演化规律的分析,指出有效应力的一般定义不适用于疲劳损伤问题.本文认为,疲劳问题中的有效应力应该以等效寿命为基础,并根据剩余寿命的概念引入了疲劳损伤问题中有效应力的一种定义.

The statistical characteristics of materials parameter in the ductile fracture criterion proposed by the authors was first investigated by means of one step and two steps loading test of spheroidized mild steel (0.2%C) and the formula for estimating the parameter was derived also. It is found that the materials parameter assumes the characteristic of normal distribution and the derived formula is reasonable. The achievements of this study make it possible to reveal the damage evolution and to predict the workability...

The statistical characteristics of materials parameter in the ductile fracture criterion proposed by the authors was first investigated by means of one step and two steps loading test of spheroidized mild steel (0.2%C) and the formula for estimating the parameter was derived also. It is found that the materials parameter assumes the characteristic of normal distribution and the derived formula is reasonable. The achievements of this study make it possible to reveal the damage evolution and to predict the workability of materials during metal forming processees by using the proposed ductile fracture criterion.

对经过球化处理的20号钢进行一步加裁和两步加载实验,研究了作者提出的韧性断裂准则中材料参数的统计特征,并导出该参数的估算公式。结果表明,该参数服从正态分布,所建立的估算公式是合理的。所提出的韧性断裂准则可以揭示塑性加工过程中工件内部损伤演化规律和预测材料加工性。

 
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