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.
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.
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.
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.
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.
并进一步对初始损伤孔洞在后续加载中的演化行为的细观有限元力学进行模拟计算及微孔洞初始损伤对钢的延性起裂韧性影响的机理进行了研究。
The mechanism of this effect was further investigated by using finite element method to simulate the evolution of pre-damage voids during the subsequent loading process.
基于对裂隙岩石的细观CT试验，对含有单一裂纹的贵溪红砂岩在单轴疲劳荷载作用下的损伤扩展机理和演化过程进行了初步的试验研究。
Based on real time CT testing, primary testing study of fatigue failure and deformation mechanism of red sandstone has been completed under uniaxial compression condition.
基于对裂隙岩石的细观CT试验，对含有单一裂纹的贵溪红砂岩在单轴疲劳荷载作用下的损伤扩展机理和演化过程进行了初步的试验研究。
Based on real time CT testing, primary testing study of fatigue failure and deformation mechanism of red sandstone has been completed under uniaxial compression condition.
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