通过所建二维细观损伤模型分析了真空热循环次数对材料线膨胀系数曲线影响的原因。
The effect of vacuum thermal cycles on the linear expansion coefficient profile was analyzed using a proposed two-dimensional model of micro-damage.
考核了本项目申请人在预研过程中提出的材料细观损伤模型以及基于细观损伤统计的亚宏观损伤模型。
The model of micro-damage and mesoscale model based on micro-damage statistic, both of which were advanced by the proposer of the item.
本论文立足于对混凝土材料特性的认识，提出一个进行混凝土损伤与断裂过程模拟的细观数值模型。
This paper is based on the understand of the concrete material. The mathematic model to study the process of concretes damage and fracture is being put forward.
运用连续损伤力学和细观损伤力学理论，建立了适用于水射流破岩全过程分析的岩石损伤模型以及宏细观损伤的耦合模式。
The rock damage model and the damage-coupling model suited to analyze the whole process of water jet breaking rock were established with continuum damage mechanics and micro damage mechanics.
针对以缺陷密度为参量的细观损伤演化模型的局限性，着重研究了微裂纹尺寸对损伤演化的影响。
The effect of the microcracks size on damage evolution was investigated to overcome the limitations of damage models based only on defect density.
提出了一种描述岩石、混凝土类材料断裂损伤过程区的细观力学模型，用于分析材料的非线性断裂的微观机理。
The cracking mechanism based on non linear fracture model for rock concrete materials is proposed and micro mechanical model for fracture process zone (FPZ) established.
本文采用随机骨料模型和双折线损伤模型相结合，在细观层次上对混凝土在单轴荷载作用下的力学特性和破坏机理进行了数值研究。
In this paper, the random particle model and double lines damage model are used, and uniaxial mechanical properties of concrete and the damage mechanism are integrated on meso-level.
文内除了列举几种反映岩体软化及节理裂隙性质的损伤模型外，还介绍了细观与统计损伤模型。
This paper also presents several rock damage model reflecting the softening and joint behaviour of rock masses in addition to the introduction of meso and statistical models.
采用细观弹性损伤模型和有限元计算方法实现岩石三维破裂过程的数值模拟。
A linear elastic damage model based on finite element method at mesoscopic level was applied to investigate the three-dimensional failure process of rock subjected to various stress loadings.
把细观损伤理论和宏观统计损伤模型结合，建立应力–应变与微裂纹密度变化的关系；
The relation between stress-strain and density variation of rock crack has been obtained through the meso-damage theory and damage statistics model.
提出了含三相正交分布等尺寸微裂纹的准脆性材料稳定扩展的细观损伤演化模型。
The stable growth of cracks in a brittle material with three mutually perpendicular families of microcracks under proportional tensile loads was studied.
采用细观力学方法提出一个岩石各向异性损伤和渗流耦合的细观模型。
A coupled model for anisotropic damage and permeability variation by using a micromechanical approach is presented.
采用细观力学方法提出一个岩石各向异性损伤和渗流耦合的细观模型。
A coupled model for anisotropic damage and permeability variation by using a micromechanical approach is presented.
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