Testing Study on Crack Propagation Due to Rheological Fracture in Quasi-Brittle Material Under Compression-Shear or Double Torsional Loading
Testing Study on Crack Propagation Due to Rheological Fracture in Quasi-Brittle Material Under Compression-Shear or Double Torsional Loading
复制标题
压剪或双重扭转载荷下准脆性材料流变断裂裂纹扩展试验研究
DOI：
10.1007/s10706-016-0072-0
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发表时间：
2016-08
期刊：
影响因子：
--
通讯作者：
Weijun Wang
中科院分区：
文献类型：
--
作者：
Yanlin Zhao;Yixian Wang;Weijun Wang
本文采用双扭试件恒位移松弛法对岩石裂纹扩展进行了测量，在实验室尺度上证实了蠕变断裂的存在，并得到了三种蠕变断裂贯通模式：翼形裂纹、原生裂纹和剪切裂纹。蠕变断裂是岩石类材料裂纹亚临界扩展的一种稳定的裂纹扩展方式。基于粘弹性断裂力学、流变力学和能量原理，从应力强度因子、翼裂纹长度和持续时间等内变量出发，推导了相应的势函数，并结合蠕变断裂准则，建立了损伤变量效应的计算模型。该计算方法和理论判据为研究岩石蠕变断裂的微观机理、裂纹扩展的测量和岩石工程蠕变断裂的宏观机理提供了一种新的实用工具。
In this paper, the crack propagation measurement for rock is made by using constant displacement relax method of double torsion specimens, it has confirmed the presence of creep fracture on a laboratory-scale, and has obtained the three kinds of creep fracture coalescence patterns: wing crack, primary crack and shear crack. The creep fracture is a stable crack growth essential due to the subcritical propagation of rock-like material crack. Based on viscoelastic fracture mechanics, rheological mechanics and energy principle, the corresponding potential functions have been deduced from inner variable, which included the stress intensity factors, wing crack length and duration time, and the creep fracture criterion, computational model of damage variable effects have been established. The calculation method and theoretical criterion have provided a new and practical tool for studying microscopic mechanism of creep fracture in rock cracks propagation measurement and macro-mechanism of creep fracture in rock engineering.
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DOI：
--
发表时间：
2010
期刊：
Mineral Engineering Research
影响因子：
--
作者：
Wan Wen
通讯作者：
Wan Wen
影响因子：
--
作者：
Yanlin Zhao;P. Cao;Weijun Wang;W. Wan;Ye-ke Liu
通讯作者：
Yanlin Zhao;P. Cao;Weijun Wang;W. Wan;Ye-ke Liu
影响因子：
6.6
作者：
W. Knauss;H. Dietmann
通讯作者：
W. Knauss;H. Dietmann
DOI：
10.1016/0148-9062(79)90772-1
发表时间：
1979-01-01
影响因子：
7.2
作者：
KRANZ, RL
通讯作者：
KRANZ, RL
影响因子：
6.9
作者：
Guan, Zhenchang;Jiang, Yujing;Huang, Hongwei
通讯作者：
Huang, Hongwei