Micro- and macrobehavior of granitic rock: observations and viscoelastic homogenization analysis
Micro- and macrobehavior of granitic rock: observations and viscoelastic homogenization analysis
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DOI：
10.1016/s0045-7825(01)00244-4
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发表时间：
2001-11
影响因子：
7.2
通讯作者：
Y. Ichikawa;K. Kawamura;K. Uesugi;Y. Seo;N. Fujii
中科院分区：
文献类型：
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作者：
Y. Ichikawa;K. Kawamura;K. Uesugi;Y. Seo;N. Fujii
微观结构必须确定，以分析微观非均匀材料，如结晶岩石的行为。利用超亮同步辐射(SR)-CT系统，通过x射线层析显微镜（XTM）图像观察了花岗岩的三维结构。然后，通过显微镜观察了花岗岩在水饱和三轴应力条件下的随时间变化的断裂行为。其次，为了了解各组成矿物及其界面的性质，我们引入了分子动力学（MD）计算机模拟方法。在此基础上，采用均匀化分析方法建立了花岗岩的微观/宏观模型，模拟了花岗岩的粘弹性行为。
Microscopic structures must be determined for analyzing the behavior of microinhomogeneous materials such as crystalline rocks. We observe a three-dimensional texture of granitic rock by X-ray tomographic microscopy (XTM) images using an ultra-bright synchrotron radiation (SR)-CT system. The time-dependent fracturing behavior of granite for relaxation tests is, then, observed by microscope under water-saturated triaxial stress conditions. Next, in order to know properties of each constituent mineral and their interfaces, we introduce the Molecular Dynamics (MD) computer simulation method. Based on these facts we establish a micro/macromodel of granite by a homogenization analysis method to simulate the viscoelastic behavior.