Numerical simulation of Brazilian disk rock failure under static and dynamic loading
Numerical simulation of Brazilian disk rock failure under static and dynamic loading
复制标题
静态和动态加载下巴西盘岩石破坏的数值模拟
DOI：
10.1016/j.ijrmms.2005.06.008
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发表时间：
2006-02
影响因子：
7.2
通讯作者：
唐春安
中科院分区：
文献类型：
--
作者：
朱万成;唐春安
采用基于RFPA（Rock Failure Process Analysis）的数值模拟方法，研究了非均质岩石巴西圆盘在静、动载荷作用下的变形破坏过程。在该模拟器中，考虑岩石的非均匀性，假设元素的材料特性符合威布尔分布;弹性损伤为基础的法律，考虑应变率依赖性被用来描述在细观尺度的本构关系;和有限元程序被用作基本的应力分析工具。首先通过模拟均质岩棒的动态层裂，并与理论和实验结果进行比较，验证了该模拟器的有效性。然后，数值模拟了岩石巴西圆盘在静、动载荷作用下的破坏过程，并与已有的实验结果进行了比较。特别注意的是岩石盘的典型故障模式时，施加不同振幅的入射压缩应力波。数值模拟还确定了岩石在动态破坏过程中的破坏机制，这些机制与应力波的传播密切相关。
A numerical simulator based on RFPA (Rock Failure Process Analysis) is used to study the deformation and failure process of a Brazilian disk of heterogeneous rock when subjected to static and dynamic loading conditions. In this simulator, the heterogeneity of rock is considered by assuming that the material properties of elements conform to a Weibull distribution; an elastic damage-based law that considers the strain-rate dependency is used to describe the constitutive law at mesoscopic scale; and a finite element program is employed as a basic stress analysis tool. The simulator is firstly validated by simulating the dynamic spalling of a homogeneous rock bar and by comparing with the theoretical and experimental results. Then, the failure process of a Brazilian disk of rock subjected to static and dynamic loading is numerically simulated, and the numerical results are compared with the available experimental results. Particular attention is given to the typical failure patterns of the rock disk when the incident compressive stress waves with different amplitudes are applied. The numerical simulation also identifies the failure mechanisms of rock during dynamic failure processes that are closely related to the propagation of the stress wave.
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影响因子：
1.7
作者：
C. Rocco;G. Guinea;J. Planas;M. Elices
通讯作者：
C. Rocco;G. Guinea;J. Planas;M. Elices
DOI：
10.1016/0148-9062(90)94328-q
发表时间：
1990-06
期刊：
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts
影响因子：
--
作者：
K. Chong;A. Boresi
通讯作者：
K. Chong;A. Boresi
影响因子：
6.2
作者：
Wancheng Zhu;Chun’an Tang
通讯作者：
Wancheng Zhu;Chun’an Tang
影响因子：
4.7
作者：
M. L. Hughes;J. W. Tedesco;C. Ross
通讯作者：
M. L. Hughes;J. W. Tedesco;C. Ross
DOI：
--
发表时间：
1951
期刊：
Journal of Applied Mechanics
影响因子：
--
作者：
W. Weibull
通讯作者：
W. Weibull