Study on subcritical crack growth and thresholds of rocks;
目的 研究火炮身管的临界裂纹和初始允许裂纹尺寸 。
Subcritical crack growth is one of the main causes of time-induced failure in rock engineering.
亚临界裂纹扩展是岩体工程破坏时间效应的原因之一。
The subcritical crack growth mechanism in brittle materials is studied from the viewpoint of mesomechanics.
本文从细观力学角度研究了高脆性材料亚临界裂纹扩展机制。
Many studies in the related area of stress corrosion or subcritical crack growth use simplified test systems.
提出了采用人工模拟降雨试验数据直接计算临界抗剪切应力的方法。
The constant-displacement-relax method of double torsion specimens was applied to(study) subcritical crack growth of flabby and intricate ore in Jinchuan mine.
采用双扭试件常位移松弛法，对金川软弱复杂矿岩进行亚临界裂纹扩展试验研究。
Fracture mechanical model is developed by utilizing subcritical crack growth, leading to an equation that has a closed solution for joint cohesion as a function of time.
利用分支裂隙扩展建立断裂力学模型，可导出节理内聚力的一种具有封闭解的时间方程。
It is shown that the fracture of concrete behaved complicatedly and irregularly, which underwent explicitly a subcritical crack growth prior to the unstable crack propagation.
结果表明：混凝土断裂是一个复杂的不规则过程，存在明显的亚临界扩展现象。
Based on testing results, the relationship between velocity of granite subcritical crack growth and stress intensity factor, and the fracture toughness are obtained respectively.
根据试验结果，得到了花岗岩亚临界裂纹扩展速度与应力强度因子之间的关系和花岗岩的断裂韧度。
Based on testing results, the relationship between velocity of granite subcritical crack growth and stress intensity factor, and the fracture toughness are obtained respectively. Du...
根据试验结果，得到了花岗岩亚临界裂纹扩展速度与应力强度因子之间的关系和花岗岩的断裂韧度。
In this paper, through analyzing the subcritical crack growth, a new formula is presented which can be used to calculate the crack fracture initiation stress at low and middle stress rates.
本文通过裂隙亚临界扩展的分析，提出一个计算低、中等应力率下裂隙断裂起动应力的新公式。
But the beginning of the acoustic emission sign is not the cracking point of main crack, and the preinstability stage may not be equal to the subcritical growth stage.
但是，声发射信号的起始点并不是主裂纹起裂点，失稳前阶段也不能与亚临界扩展阶段等同。
But the beginning of the acoustic emission sign is not the cracking point of main crack, and the preinstability stage may not be equal to the subcritical growth stage.
但是，声发射信号的起始点并不是主裂纹起裂点，失稳前阶段也不能与亚临界扩展阶段等同。
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