论文标题
辐照岩石扩展的有限元方法建模：专注于矿物
Finite element method modeling of expansion of irradiated rocks: focusing on the minerals
论文作者
论文摘要
与辐射的积累相关的体积扩张现象的有限元方法（FEM）模型是在核电厂的混凝土中进行的。基于微观图像创建了砂岩，凝灰岩和花岗岩的FEM网格，并计算了辐照引起的体积扩张。计算了由于辐照积累而引起的体积膨胀的饱和值，并表明体积膨胀的饱和值通过实验值很好地解释了。此外，FEM分析表明，辐射诱导的岩石降解通过局部应力浓度传播，然后裂缝，裂缝在整个岩石中散布。
Finite element method (FEM) modeling of the volumetric expansion phenomenon associated with the accumulation of irradiation was performed on rocks in a concrete for nuclear power plant. The FEM mesh of sandstone, tuff, and granite was created based on microscopic images, and the volumetric expansion due to irradiation was calculated. The saturated value of the volume expansion due to irradiation accumulation was calculated, and it was shown that the saturated value of the volume expansion was well explained by the experimental value. In addition, the FEM analysis indicates that irradiation-induced degradation of rock propagates through a localized concentration of stress followed by fracture with cracks spreading throughout the rock.
