THE CONVERGENCE OF STRUCTURAL MODELS USED IN THE GEOTECHNICAL SOFTWARE
Math. Petru Cardei, PhD. Student Sebastian Muraru, Researcher Raluca Sfiru, PhD. Vergil Muraru
National Institute of Research - Development for Machines and Installations designed to Agriculture and Food Industry – INMA, Romania
This article shows the results obtained by applying a study method of the convergence of structural models, for the particular case of a structural model from the geotechnical domain.
For this purpose, is used the study method of the structural models convergence, already widely used in the field of research and CAD - CAE design. For a larger relevance and utility is presented the convergence study of a structural model for a ground section to which it applies a uniform load. The problem of ground compaction is solved by using the finite element method. Is applied a study method of the convergence of the structural model in order to estimate more accurate the stress and compaction of the soil, while reducing as much as possible the computational effort. This simple example demonstrates the need for the study of convergence. Two important reasons underlying the need for this study. The first is the satisfying accuracy of the expected results. The second reason relates to the formation of the experience to choose the meshing step for users of such as programs.
In essence, the two requirements can be synthetically expressed by obtaining an optimal meshing (broadly) so as to obtain the necessary results with desired precision in the shortest time possible. Through the study presented in this article, we hope to open debates on convergence structural models in geotechnical, at least as interesting as those of the CAD-CAE domain.