本文研究了含有微小裂隙的韧性材料中细观损伤的演化。
Study is emphasized on the evolution of microstructural damage induced in material, which initially embeds flaws.
木材的细观损伤基元可以归纳为4类：1）胞、壁层间界面损伤；
Meso-damage elements of wood could be devided into four kinds: 1)cell or cell wall interface damage;
岩石冻融过程的细观损伤研究是近年来冻融损伤研究的一个新方向。
The damage propagation of rock under the freezing and thawing condition is a new direction of rock damage mechanics.
岩石爆破损伤断裂机理是由岩石爆破机理和岩石细观损伤力学理论组成的。
The mechanism of damage and fracture of rock blasting is composed of blasting mechanism and rock meso-damage theory.
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.
简述了细观损伤力学的研究进展，分析了细观损伤力学对金属塑性加工的重要意义。
Research progresses of meso - damage mechanics were summarized and its significations in metal plastic forming were analyzed.
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.
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.
文中以裂纹连续扩展的断裂力学方法，研究单向纤维复合材料的细观损伤演化与韧度计算。
The methodology of fracture mechanics based on continuous crack growth was applied to the investigation of the microscopic damage evolution and toughness calculation for fiber composites.
基于细观损伤力学开发的RFPA2D数值模拟软件，分析了巴西劈裂试样的应力分布特征。
The RFPA2D numerical simulation software developed based on the microscopic damage mechanics was applied to analyze the stress distribution features of the Brazilian splitting samples.
进一步讨论表明，岩石密度损伤增量场能圆满地刻画岩石细观损伤状态和岩石细观损伤过程。
It is tested that the density damage increment not only reflects the damage degree of rock but also describes the meso-damage process of rock. The further discussion shows...
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.
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.
损伤效应函数的具体形式可由细观力学解答确定，从而使连续损伤力学与细观损伤力学有机结合在一起。
The detailed expressions of the damage effect functions are investigated by micromechanics, which enables us to relate the continuum damage mechanics with the microscopic damage mechanics.
选用具有典型细观结构特征的球墨铸铁材料进行试验，探讨这种金属材料在各种三轴应力状态下的细观损伤破坏。
Nodular cast iron specimens with typical mesostructure are tested to study the meso damage evolution and failure mechanism at different triaxial stress states.
细观损伤力学常采用一种平均化的方法，把细观结构损伤机制研究的结果反映到材料的宏观力学行为的描述中去。
Microscopic damage often USES an average method to describe the study results of microscopic structural damage mechanism in macroscopic mechanics of material.
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.
饱和混凝土中孔隙自由水的存在对材料的力学性能有显著的影响，动态工况中主要表现为自由水的粘性效应，且该效应随细观损伤引起的微裂纹密度的改变而变化。
It exhibits the viscous effect under dynamic loading case, and the effect strengthens with the growth of the micro-crack density induced by the meso-damage of material.
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.
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.
本文针对CMSX - 4单晶材料，在细观层次上对筏化-解筏以及空穴这两种主要损伤机理进行了细观试验研究。
This paper introduces the micro study carried out for the two main damage mechanisms of rafting-solution rafting and void of CMSX-4 single crystal material at micro levels.
从细观断裂力学和损伤力学的观点出发，解释了该规律的物理意义。
The physical meanings of the formula presented are explained from the standpoint of submacroscopic fracture mechanics and damage mechanics.
最后，依据几何损伤理论得到基于岩石细观量化试验的岩石REV的初始损伤张量，将其引入到g。
Finally, based on geometrical damage mechanics, the initial damage tensor of REV of rock at mesoscale is obtained, and then introduces it into g.
在CT尺度裂纹演化和破坏阶段，由于岩石损伤高度局部化，声发射率参数不能精确反映岩石破坏的细观机制。
At the process of ct crack and rapture evolution, the acoustic emission can not precisely reflect the meso-mechanism of rock deformation and rapture because of localization of damage.
其力学性能及损伤破坏机理不仅取决于各组分材料的性能，同时也取决于细观结构特征。
The mechanical behavior and failure mechanism of woven fabric composites depend significantly on its micro-structure and the properties of each constituent.
通过声发射波形信号的频谱分析，研究了碳纤维三维编织复合材料拉伸损伤的细观机理。
Spectrum analysis was performed to determine the micro-mechanism of damage evolution of C fiber 3-D braiding composite material.
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.
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.
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