Development of a Computer Application to Simulate Porous Structures

Abstract

Geometric modeling is an important tool to evaluate structural parameters as well as to follow the application of stereological relationships. The obtention, visualization and analysis of volumetric images of the structure of materials, using computational geometric modeling, facilitates the determination of structural parameters of difficult experimental access, such as topological and morphological parameters. In this work, we developed a geometrical model implemented by computer software that simulates random pore structures. The number of nodes, number of branches (connections between nodes) and the number of isolated parts, are obtained. Also, the connectivity (C) is obtained from this application. Using a list of elements, nodes and branches, generated by the software, in AutoCAD® command line format, the obtained structure can be viewed and analyzed

Positron annihilation study of pore size in ordered SBA-15

“…Considering that pores are cylindrical, Reis et al [26] developed an equation that uses specific pore volume, theoretical density, and specific surface experimental measurements to directly evaluate structural connectivity. The model presented here can generate connectivity curves from experimental parameters such as specific surface area, specific pore volume, and skeletal density, as shown in Eq.…”

“…The o-Ps intensity of s 3 is high and increases with aging temperature. In contrast, the intensity of s 4 is lower and decreases with temperature increases.The results obtained with the model developed by Reis et al[26] are shown in…”

Geometrical Degrees of Freedom for Cellular Structures Generation: A New Classification Paradigm

“…To create randomized shapes, the vertices of existing unit cells can be varied in a random fashion, as is the case for Zhang et al [61]'s work. A similar method is captured in the work of Reis et al [62]. They create a network of struts that it subtracted from an original design space.…”