We present a new module included in the DIONISIO 3.0 code, extending its capabilities to analyze experiments without irradiation in two-dimensional domains with axial symmetry and three-dimensional domains. The code can analyze any material and geometry subject to histories of variable temperature, pressure, composition of the atmosphere, etc. Based on the finite element method, the code can build simple geometries or read meshes adapting them to the specific case to be simulated. We compare the calculations of the module in different scenarios to analyze the behavior of rods and UO₂ pellets. In the former, we used several ballooning experiments under constant pressure or temperature over diverse atmospheres. A description of the evolution of a crack in the cladding is included. In the latter, we use a thermal densification model included in the code to analyze the porosity behavior during re-sintering processes.

我们提出了DIONISIO 3.0代码中包含的一个新模块，扩展了它的功能，以分析没有辐射的具有轴向对称性的二维域和三维域的实验。该代码可以分析受温度，压力，大气成分等变化的历史影响的任何材料和几何形状。基于有限元方法，该代码可以构建简单的几何形状或读取网格以使其适应特定的模拟情况。我们比较了在不同情况下模块的计算，以分析棒和UO ₂的行为颗粒。在前一种方法中，我们在恒定的压力或温度下，在不同的气氛中使用了几个膨胀实验。包括对包层裂纹发展的描述。在后者中，我们使用代码中包含的热致密化模型来分析重新烧结过程中的孔隙率行为。